From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 03F28215073 for ; Wed, 30 Apr 2025 10:09:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746007774; cv=none; b=hWqHd/cW+Vn/IJG9wdm4/3q88n8QGQCoNnbaFZ5kSsoyqpMocwt2MQwCYn9kh/QJ2DxtclYwsvz7ulrtUag3j/KfYWox+1xGPxJsBjnACz63DCYe6lX6SBG1iJSw9+adiQdy04VfFytFR/JDgRndgzZJU0s9F6IjnRXYdKaPV1Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746007774; c=relaxed/simple; bh=Xiwn4m1y1/4XK4GhXH1XarKpwDgevcijcV6nHGnhUfo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=NBtj31TtquHS+UZ4fxDgeQJngEWelwwgSyEELa/UZh/xBsmkJAtIGxPIKhq0P0CMtnnsO8F0OpgrLtmwxzt+ixSIAo01+F53n7Ur4A9uYNiAIFEA610UBZacvAPAvLiGwFx8RiwUkvvYX0MMqLej+9cKNfLznmUXv8XR+6ie2WY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.79 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-io1-f79.google.com with SMTP id ca18e2360f4ac-86195b64df7so1281269339f.2 for ; Wed, 30 Apr 2025 03:09:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746007772; x=1746612572; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=owYoddgXi49+mdnoF9Q7fo85eH1J3O6rJZlwx4Gv0dc=; b=OmxMEqHo5NfPp8Qn8ikRs1aSk9T6awSQwAZZiF4Kox4OLqdzVRxXge6HwD0yRZEUkZ 45tadi7vG1rXMfb73TDH1YAIRr/DUsax7BmCn3n4fs6SblOBOurxXM4gHPj9czz4VJ+R qBIIR9WGf7WYSkJ7JZ7h7L9oayROUYvjb7bEElQUMYYTOVI88Wm8hFiJWo56Bp6OLMUz TGmwrOmvv7fVYB+59UWREsnvPFFj742FxnLqQM3tuGTTj9wOcNMKzhlQyI3d046Tpf3l dXVq2AXVPasYIGRK0yRpwpz686VI3uI2N2jPWZJulnYEN91hyOKBf1nhxmJ62meGFkj4 wm+g== X-Forwarded-Encrypted: i=1; AJvYcCXe/LzRgk2cRgXkldMsszGXg14LMJeXmaG8sEI3Pr3oquleMbws3JxEVPNfTDYVqcy0Cf5ZngxChh8OWtE=@vger.kernel.org X-Gm-Message-State: AOJu0YycaOJ9k1538N0pOLQgMnAAb+Yda9SH3jTyX+9mfyQ3kuFBBFBM /S9L9SPsVs+/OSV/end5dYfItlL3QOxBEJMS1tD4VdsctlJXma6XcQy6BKLkuviFgKRRYhmU1l4 UHLyo7wxrqJYSx1fVeqv/X1DzvRCsny/lvSCsREmqR7XW1e7Lvoi/ygg= X-Google-Smtp-Source: AGHT+IGnPmmFwGOzCY1fGYkrchQc0kdSjqWR9z0eYAVNyscxrnQDRyxIQzruMZ988cZzNbNF6RHRst4FH2A78EXT3Ybtnh4sauZJ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:4811:b0:864:6799:6059 with SMTP id ca18e2360f4ac-86495e1aeadmr343016339f.3.1746007772115; Wed, 30 Apr 2025 03:09:32 -0700 (PDT) Date: Wed, 30 Apr 2025 03:09:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6811f6dc.050a0220.39e3a1.0d0d.GAE@google.com> Subject: [syzbot] [rdma?] KASAN: slab-use-after-free Read in ib_register_device From: syzbot To: jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 02ddfb981de8 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11434368580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9f5bd2a76d9d0b4e dashboard link: https://syzkaller.appspot.com/bug?extid=e2ce9e275ecc70a30b72 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/37d29bf0bb8b/disk-02ddfb98.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/04b17f9932d8/vmlinux-02ddfb98.xz kernel image: https://storage.googleapis.com/syzbot-assets/a1c7813f1b54/bzImage-02ddfb98.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e2ce9e275ecc70a30b72@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-use-after-free in strlen+0x93/0xa0 lib/string.c:420 Read of size 1 at addr ffff88801e6cfea1 by task syz.2.292/7048 CPU: 1 UID: 0 PID: 7048 Comm: syz.2.292 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 strlen+0x93/0xa0 lib/string.c:420 __fortify_strlen include/linux/fortify-string.h:268 [inline] get_kobj_path_length lib/kobject.c:118 [inline] kobject_get_path+0x3f/0x2a0 lib/kobject.c:158 kobject_uevent_env+0x289/0x1870 lib/kobject_uevent.c:545 ib_register_device drivers/infiniband/core/device.c:1472 [inline] ib_register_device+0x8cf/0xe00 drivers/infiniband/core/device.c:1393 rxe_register_device+0x275/0x320 drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_net_add+0x8e/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:550 rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:225 nldev_newlink+0x3a3/0x680 drivers/infiniband/core/nldev.c:1796 rdma_nl_rcv_msg+0x387/0x6e0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e5/0x450 drivers/infiniband/core/netlink.c:239 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb12658e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb127391038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb1267b6080 RCX: 00007fb12658e969 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000009 RBP: 00007fb126610ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb1267b6080 R15: 00007ffe92b5e748 Allocated by task 7048: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4341 [inline] __kmalloc_node_track_caller_noprof+0x221/0x510 mm/slub.c:4360 __kmemdup_nul mm/util.c:63 [inline] kstrdup+0x53/0x100 mm/util.c:83 kstrdup_const+0x63/0x80 mm/util.c:103 kvasprintf_const+0x164/0x1a0 lib/kasprintf.c:46 kobject_set_name_vargs+0x5a/0x140 lib/kobject.c:274 dev_set_name+0xc7/0x100 drivers/base/core.c:3469 assign_name drivers/infiniband/core/device.c:1211 [inline] ib_register_device+0x7df/0xe00 drivers/infiniband/core/device.c:1398 rxe_register_device+0x275/0x320 drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_net_add+0x8e/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:550 rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:225 nldev_newlink+0x3a3/0x680 drivers/infiniband/core/nldev.c:1796 rdma_nl_rcv_msg+0x387/0x6e0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e5/0x450 drivers/infiniband/core/netlink.c:239 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 7111: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2398 [inline] slab_free mm/slub.c:4656 [inline] kfree+0x2b6/0x4d0 mm/slub.c:4855 kfree_const+0x55/0x60 mm/util.c:45 kobject_rename+0x178/0x260 lib/kobject.c:524 device_rename+0x130/0x230 drivers/base/core.c:4526 ib_device_rename+0x113/0x5c0 drivers/infiniband/core/device.c:402 nldev_set_doit+0x3d7/0x4e0 drivers/infiniband/core/nldev.c:1147 rdma_nl_rcv_msg+0x387/0x6e0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e5/0x450 drivers/infiniband/core/netlink.c:239 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88801e6cfea0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 1 bytes inside of freed 8-byte region [ffff88801e6cfea0, ffff88801e6cfea8) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e6cf flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801b441500 ffffea00009f5200 dead000000000002 raw: 0000000000000000 0000000000800080 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 2371251963, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1718 prep_new_page mm/page_alloc.c:1726 [inline] get_page_from_freelist+0x135c/0x3920 mm/page_alloc.c:3688 __alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4970 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2468 [inline] allocate_slab mm/slub.c:2632 [inline] new_slab+0x244/0x340 mm/slub.c:2686 ___slab_alloc+0xd9c/0x1940 mm/slub.c:3872 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3962 __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] __do_kmalloc_node mm/slub.c:4340 [inline] __kmalloc_noprof+0x2f2/0x510 mm/slub.c:4353 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] acpi_ns_internalize_name+0x144/0x220 drivers/acpi/acpica/nsutils.c:331 acpi_ns_get_node_unlocked+0x163/0x310 drivers/acpi/acpica/nsutils.c:666 acpi_ns_get_node+0x4c/0x70 drivers/acpi/acpica/nsutils.c:726 acpi_ns_evaluate+0x6ef/0xca0 drivers/acpi/acpica/nseval.c:62 acpi_evaluate_object+0x1fa/0xa90 drivers/acpi/acpica/nsxfeval.c:354 acpi_evaluate_dsm+0x194/0x290 drivers/acpi/utils.c:797 acpi_check_dsm+0x51/0x260 drivers/acpi/utils.c:830 device_has_acpi_name drivers/pci/pci-label.c:44 [inline] acpi_attr_is_visible+0xb3/0x130 drivers/pci/pci-label.c:221 page_owner free stack trace missing Memory state around the buggy address: ffff88801e6cfd80: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc ffff88801e6cfe00: fa fc fc fc fa fc fc fc fa fc fc fc 00 fc fc fc >ffff88801e6cfe80: 00 fc fc fc fa fc fc fc 02 fc fc fc 04 fc fc fc ^ ffff88801e6cff00: fa fc fc fc 02 fc fc fc fa fc fc fc fa fc fc fc ffff88801e6cff80: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc ================================================================== --- This report is generated by a bot. 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