From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.210.70 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794717991; b=f7yopR/aybEREOfGKK03eaLBKGLlRQtZ3ks4R4t3ssF+6MpuUFf/vQkJVxkebBn58fvK HTm1FtrtSB7Wh9OKO9mTxESXVIPEkyoIORmhVqJNtrRKFH1B71VkadANH/D4977JBwCLa ko8QWC9l8aatx1SmRwBIG/ncDLoh5Cf9CcxX1eFCg4MZAmo7xifmA/DqI0DGCx5fcjn4V 6W/hQTxBThe++W/jKqfajYsHDCuO5/xVaq7PFCtGllSLXIAs9Vdsi1P3ZoOQTpL412YD8 0gda2PNFbENAHi/Q5EH44OKRoFQgKHlyvgeqlPuVW4MwuyBV2uzyZPHvEgR/dlH3sPQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794717991; h=DMARC-Filter:Received:X-Google-DKIM-Signature:X-Gm-Message-State: MIME-Version:X-Received:Date:In-Reply-To:X-Google-Appengine-App-Id: X-Google-Appengine-App-Id-Alias:Message-ID:Subject:From:To: Content-Type; bh=vXetaywFPW1Yinuw2ycsyGtH55hrBzKpFTa6lRlcTRQ=; b=pJlg1EfgyjVfNAwQR0YtVdUGc4W8+fkvRG5zBuoA1jUQZu+Bam6+IpvseOcy+EcD1FcM hVmBLuo918AaMCBXc1WUfUJ4adC0T1Yg4IGK1y/QP+g7BtafXZ4aBI1yT7+Iu0kre5P1G da4C7Es8BBoGEYxZG1q77VnhJPCOIbhzQ2K8vb4QMe9lPumK5X/raALwJVBQSuVjvENlQ LM3DkFcYuaitxDBS48RlKkxRivhVRMJ8D/hnRlXhW3jH62F0gEudT6s5ggecQ+Hs29Da0 azOc6Sh0tfcrIGreY4XPU3Ndsgppg9FpIk/BPg10E6GnpXBGuceYg6KprUWGGYmWwLw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.remote-ip=209.85.210.70 Received: from mail-ot1-f70.google.com (mail-ot1-f70.google.com [209.85.210.70]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC888606A329 for ; Sun, 15 Nov 2026 04:46:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org BC888606A329 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-ot1-f70.google.com with SMTP id 46e09a7af769-847e2926d94so5225982a34.0 for ; Sat, 14 Nov 2026 20:46:30 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794717990; x=1795322790; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=vXetaywFPW1Yinuw2ycsyGtH55hrBzKpFTa6lRlcTRQ=; b=yZcaDJfTkz9xfaSOYvcBnFg/BmtsEwaq9wVgwutYOuyZh9Quy6Axa2TwJ4tm8VdkQG cF5kjV8w0Og9+608/XRJrIuFyXCUiLZfVohgwiUT4BAn9VUZtwPOaGOYFw7uMtPd4eNY PRvoXubsyLJtdjCM6JxfCP75+8ODrXfPLpcZwIJvZqWpM/WtH1BIdtyRhhmDU+2YHj+C 3TyVnyYp/EdANUlu7xx+yuO1gDfkdEjFCWwv3Y2cG/J2D6pqDb5vmCmVD6tFiBNses1p HkjI7zx3LqKbYOPk8XE+/xzbnQwIhAjWsNRan7YI4aoeubimCQF6mxTrJlFwShlJUDYp WCtw== X-Gm-Message-State: APuU4Z8D3GNVz/TzwLQUNYPgYhmysJT3YuULpCUP13Xz++ce6Qdz5jNR cdACqinOl6ecXQPWjvEbcLvPx20lKxVSz+7kklLRiG4OHCOXirP2U3U+bapuxegs2MRJLvLLbVp QlzBWjQc3fxUzbt53CKoP5Q2gCfZUzN0sX1QaaDCpxF/F+bF2/DvRcwTVHdo= X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-Received: by 2002:a05:6808:1790:b0:4d6:90f4:48b7 with SMTP id 5614622812f47-56e6542e6d8mr7132893b6e.57.1794717989883; Sat, 14 Nov 2026 20:46:29 -0800 (PST) Date: Sat, 14 Nov 2026 20:46:29 -0800 In-Reply-To: <6af79f77.98e60839.1e023a.00d6.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6af93925.aa201734.33d248.000a.GAE@google.com> Subject: Re: [syzbot] [bluetooth?] WARNING in l2cap_chan_le_send_credits From: syzbot To: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: ad3fc05c7e65 arm64: suspend: Only track cpuidle context fo.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=108eebfd580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4e8e6c1701ad8af2 dashboard link: https://syzkaller.appspot.com/bug?extid=9dc8780713b11155dd74 compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 userspace arch: arm64 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a329ad580000 AI-generated root cause summary: In net/bluetooth/l2cap_core.c, l2cap_chan_le_send_credits() allocates an L2CAP transaction identifier via l2cap_get_ident() and unconditionally calls ida_free(&conn->tx_ida, ident) after transmission under the assumption that L2CAP_LE_CREDITS never expects a response. However, if the remote peer rejects the packet with L2CAP_COMMAND_REJ or sends a signaling response bearing that identifier, the asynchronous RX signaling handler l2cap_put_ident() sees the ID as currently allocated and frees it first. When l2cap_chan_le_send_credits() then executes ida_free() on the already-released identifier, ida_free() detects that the ID is not allocated and triggers the warning in lib/idr.c. full analysis: https://syzkaller.appspot.com/x/ai_root_cause?x=9dc8780713b11155dd74 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9dc8780713b11155dd74@syzkaller.appspotmail.com ------------[ cut here ]------------ ida_free called for id=3 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 0000000000000003 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000003 x19: 0000000000000000 x18: 00000000ffffffff x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008b586000 x14: 000000000000067b x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 8486 hardirqs last enabled at (8485): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (8486): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (8478): [] __do_softirq+0x14/0x20 kernel/softirq.c:703 softirqs last disabled at (8455): [] __do_softirq+0x14/0x20 kernel/softirq.c:703 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=5 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 0000000000000005 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000005 x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008b586000 x14: 00000000000006c5 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 8834 hardirqs last enabled at (8833): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (8834): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (8818): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (8816): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (8816): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=8 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 0000000000000008 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000008 x19: 0000000000000000 x18: 1fffe000359cf228 x17: ffff800123625000 x16: ffff80008f910000 x15: 0000000000000001 x14: 000000000042ed3e x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff7000129e4eb8 x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000803cfd0c x2 : 0000000000000001 x1 : ffff0000d8109d80 x0 : 0000000000000001 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 9170 hardirqs last enabled at (9169): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1719 [inline] hardirqs last enabled at (9169): [] finish_lock_switch kernel/sched/core.c:5314 [inline] hardirqs last enabled at (9169): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5432 hardirqs last disabled at (9170): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (9150): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (9148): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (9148): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=10 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 000000000000000a x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 000000000000000a x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008996b3e0 x14: 0000000000000760 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 9406 hardirqs last enabled at (9405): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (9406): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (9390): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (9388): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (9388): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=12 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 000000000000000c x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 000000000000000c x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008996b3e0 x14: 00000000000007af x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 9622 hardirqs last enabled at (9621): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (9622): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (9606): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (9604): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (9604): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=156 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 000000000000009c x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 000000000000009c x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 00000000000007fa x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 24500 hardirqs last enabled at (24499): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (24500): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (24488): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (24486): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (24486): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=220 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000dc x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000dc x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000845 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 31398 hardirqs last enabled at (31397): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (31398): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (31386): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (31384): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (31384): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=235 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000eb x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000eb x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000890 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 33188 hardirqs last enabled at (33187): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (33188): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (33176): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (33174): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (33174): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=237 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000ed x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000ed x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 00000000000008db x13: 0000000000000001 x12: ffff800123625000 x11: ffff0001ace79308 x10: 0000000000000001 x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 33428 hardirqs last enabled at (33427): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (33428): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (33408): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (33406): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (33406): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=166 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000a6 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000a6 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000926 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 53042 hardirqs last enabled at (53041): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (53042): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (53030): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (53028): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (53028): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=172 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000ac x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000ac x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000971 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 53782 hardirqs last enabled at (53781): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (53782): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (53770): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (53768): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (53768): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=224 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000e0 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000e0 x19: 0000000000000000 x18: ffff800123625000 x17: ffff0001ace95387 x16: ffff0000d8109d94 x15: 0000000000000001 x14: 00000000000009bc x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 59336 hardirqs last enabled at (59335): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (59336): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (59316): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (59314): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (59314): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=239 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 00000000000000ef x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000ef x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000a07 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 60986 hardirqs last enabled at (60985): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (60986): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (60974): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (60972): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (60972): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=6 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 0000000000000006 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000006 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000a52 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 63392 hardirqs last enabled at (63391): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (63392): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (63380): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (63378): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (63378): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=109 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000cc x27: 1fffe0001aec2a11 x26: 000000000000006d x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 000000000000006d x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008996b3e0 x14: 0000000000000a9d x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 74376 hardirqs last enabled at (74375): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (74376): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (74346): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (74344): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (74344): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=24 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000c2 x27: 1fffe0001aec2a11 x26: 0000000000000018 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000018 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000aea x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 142656 hardirqs last enabled at (142655): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (142656): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (142644): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (142642): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (142642): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=156 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000be x27: 1fffe0001aec2a11 x26: 000000000000009c x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 000000000000009c x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000b35 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 158266 hardirqs last enabled at (158265): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (158266): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (158254): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (158252): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (158252): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=180 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b9 x27: 1fffe0001aec2a11 x26: 00000000000000b4 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000b4 x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008996b3e0 x14: 0000000000000b80 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 161840 hardirqs last enabled at (161839): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (161840): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (161824): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (161822): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (161822): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=137 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b9 x27: 1fffe0001aec2a11 x26: 0000000000000089 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000089 x19: 0000000000000000 x18: ffff800123625000 x17: ffff0001ace95387 x16: ffff0000d8109d94 x15: 0000000000000001 x14: 0000000000000bcb x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 204974 hardirqs last enabled at (204973): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (204974): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (204956): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (204954): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (204954): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=132 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b5 x27: 1fffe0001aec2a11 x26: 0000000000000084 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000084 x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: 0000000000000001 x14: 0000000000000c17 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 253844 hardirqs last enabled at (253843): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (253844): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (253832): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (253830): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (253830): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=233 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b5 x27: 1fffe0001aec2a11 x26: 00000000000000e9 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 00000000000000e9 x19: 0000000000000000 x18: ffff800123625000 x17: ffff0001ace95387 x16: ffff0000d8109d94 x15: 0000000000000001 x14: 0000000000000c62 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 288938 hardirqs last enabled at (288937): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (288938): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (288918): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (288916): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (288916): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=24 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b7 x27: 1fffe0001aec2a11 x26: 0000000000000018 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000018 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 x14: 0000000000000cad x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 293428 hardirqs last enabled at (293427): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (293428): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (293416): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (293414): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (293414): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=67 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules linked in: CPU: 0 UID: 0 PID: 5073 Comm: syz-executor357 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ida_free+0x24c/0x2d4 lib/idr.c:594 lr : ida_free+0x24c/0x2d4 lib/idr.c:594 sp : ffff800094f27880 x29: ffff800094f27910 x28: 00000000000000b4 x27: 1fffe0001aec2a11 x26: 0000000000000043 x25: dfff800000000000 x24: ffff800094f27880 x23: ffff7000129e4f10 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000043 x19: 0000000000000000 x18: 1fffe000359cf228 x17: 0000000000000003 x16: ffff8000898b7000 x15: ffff80008996b3e0 x14: 0000000000000cf8 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff70001135360e x9 : b56adb3a1390ea00 x8 : b56adb3a1390ea00 x7 : ffff8000804a121c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030d4c8 x2 : 0000000100000000 x1 : ffff0000d8109d80 x0 : 0000000000000000 Call trace: ida_free+0x24c/0x2d4 lib/idr.c:594 (P) l2cap_chan_le_send_credits+0x17c/0x29c net/bluetooth/l2cap_core.c:7113 l2cap_chan_rx_avail+0xb4/0x134 net/bluetooth/l2cap_core.c:7126 l2cap_publish_rx_avail+0x110/0x168 net/bluetooth/l2cap_sock.c:-1 l2cap_sock_recvmsg+0x280/0x7b8 net/bluetooth/l2cap_sock.c:1317 sock_recvmsg_nosec net/socket.c:1154 [inline] sock_recvmsg+0xd4/0x170 net/socket.c:1176 __sys_recvfrom+0x1ec/0x31c net/socket.c:2333 __do_sys_recvfrom net/socket.c:2348 [inline] __se_sys_recvfrom net/socket.c:2344 [inline] __arm64_sys_recvfrom+0xec/0x10c net/socket.c:2344 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:797 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:816 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 298612 hardirqs last enabled at (298611): [] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385 hardirqs last disabled at (298612): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484 softirqs last enabled at (298596): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:699 softirqs last disabled at (298594): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (298594): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:698 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ida_free called for id=69 which is not allocated. WARNING: lib/idr.c:594 at ida_free+0x24c/0x2d4 lib/idr.c:594, CPU#0: syz-executor357/5073 Modules l