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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1725266231; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qJMPn4CEeIgKZ3r2RQj2wbRGaDElDgUceUxREDFJ8M8=; b=pFr7AiK5YuoivSbxh8uXBTrTw/kf+m73zTV5eXWHCtGgYg3Mk6QbvZRTS3faDv6yP+QW5P maFJbd8Ig/zeUWugnqizFvCfxD8Y8Z8vtQvapf1F06WwIjdYYvDX/BxsS2Ux8W7uJnCegJ m+bxbLvV0QNdVZ44oGvrS2ru+L0/NAZAtgRVahtAVLhDpqxzzJuxZEPfeqgMqLpdamlbCM lr+jWx6mAmwOgGd5MBcuVa3AmPiA5rPXC9HG9MkeZiU5rTLccBi42heZyD4+DLW3/4foHN tDwgMrIn99trxAenmsRptl2q1xcwG42djYmJekYEJmPxpq0m9s8v47qy1Ceokg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1725266231; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qJMPn4CEeIgKZ3r2RQj2wbRGaDElDgUceUxREDFJ8M8=; b=BwVJ9mc4DpeuX0SSMVb/1V6p6EyBB+lCnchpDb8oJp4fQHQDQN52cDQHZpVcAtzRnSr/wu W9myBV4sSFbRb/Aw== To: syzbot , linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, Kees Cook , audit@vger.kernel.org Subject: Re: [syzbot] [kernel?] WARNING in audit_log_start In-Reply-To: <000000000000f11da7062091eb85@google.com> References: <000000000000f11da7062091eb85@google.com> Date: Mon, 02 Sep 2024 10:37:10 +0200 Message-ID: <87ikve78p5.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Mon, Aug 26 2024 at 01:29, syzbot wrote: Cc:+ seccomp and audit folks > syzbot found the following issue on: > > HEAD commit: 6a7917c89f21 Add linux-next specific files for 20240822 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=15c8680b980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=897bd7c53a10fcfc > dashboard link: https://syzkaller.appspot.com/bug?extid=4576eaa688ef747b8d6c > compiler: Debian clang version 15.0.6, 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/47820545bc51/disk-6a7917c8.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/e300f3a38860/vmlinux-6a7917c8.xz > kernel image: https://storage.googleapis.com/syzbot-assets/9146afef58aa/bzImage-6a7917c8.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+4576eaa688ef747b8d6c@syzkaller.appspotmail.com > > WARNING: CPU: 1 PID: 8527 at kernel/sched/core.c:8556 __might_sleep+0xb9/0xe0 kernel/sched/core.c:8552 > Modules linked in: > CPU: 1 UID: 0 PID: 8527 Comm: syz.4.642 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 > RIP: 0010:__might_sleep+0xb9/0xe0 kernel/sched/core.c:8552 > Code: a1 0e 01 90 42 80 3c 23 00 74 08 48 89 ef e8 ce e6 97 00 48 8b 4d 00 48 c7 c7 c0 60 0a 8c 44 89 ee 48 89 ca e8 f8 02 f1 ff 90 <0f> 0b 90 90 eb b5 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 70 ff ff ff > RSP: 0018:ffffc90009ab7a20 EFLAGS: 00010246 > RAX: a60a1ffb5c104900 RBX: 1ffff11004257a6c RCX: 0000000000040000 > RDX: ffffc90003e59000 RSI: 000000000001b727 RDI: 000000000001b728 > RBP: ffff8880212bd360 R08: ffffffff8155a632 R09: fffffbfff1cfa364 > R10: dffffc0000000000 R11: fffffbfff1cfa364 R12: dffffc0000000000 > R13: 0000000000000002 R14: 0000000000000151 R15: ffffffff8e0a492c > FS: 00007f4cf5b6a6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f7e0f003000 CR3: 000000001feec000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > might_alloc include/linux/sched/mm.h:337 [inline] > slab_pre_alloc_hook mm/slub.c:3987 [inline] > slab_alloc_node mm/slub.c:4065 [inline] > kmem_cache_alloc_noprof+0x5d/0x2a0 mm/slub.c:4092 > audit_buffer_alloc kernel/audit.c:1790 [inline] > audit_log_start+0x15e/0xa30 kernel/audit.c:1912 > audit_seccomp+0x63/0x1f0 kernel/auditsc.c:3007 > seccomp_log kernel/seccomp.c:1016 [inline] > __seccomp_filter+0xb38/0x1fe0 kernel/seccomp.c:1305 > syscall_trace_enter+0xa8/0x150 kernel/entry/common.c:52 > syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline] > syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline] > do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f4cf4d157e9 > Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25 > RSP: 002b:00007f4cf5b69b40 EFLAGS: 00000206 ORIG_RAX: 000000000000000f > RAX: ffffffffffffffda RBX: 00007f4cf4f15f88 RCX: 00007f4cf4d157e9 > RDX: 00007f4cf5b69b40 RSI: 00007f4cf5b69c70 RDI: 0000000000000021 > RBP: 00007f4cf4f15f80 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000206 R12: 00007f4cf4f15f8c > R13: 0000000000000000 R14: 00007fffe8828e10 R15: 00007fffe8828ef8 > > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup