syzbot


WARNING in try_check_zero

Status: upstream: reported on 2024/05/20 17:27
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+8f70859e7bdfbdc69bda@syzkaller.appspotmail.com
First crash: 62d, last: 22d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in try_check_zero 0 (1) 2024/05/20 17:27

Sample crash report:
------------[ cut here ]------------
Mixed NMI-safe readers for srcu_struct at 0xffffc9000fc868a8.
WARNING: CPU: 1 PID: 5262 at kernel/rcu/srcutree.c:453 srcu_readers_unlock_idx kernel/rcu/srcutree.c:453 [inline]
WARNING: CPU: 1 PID: 5262 at kernel/rcu/srcutree.c:453 srcu_readers_active_idx_check kernel/rcu/srcutree.c:466 [inline]
WARNING: CPU: 1 PID: 5262 at kernel/rcu/srcutree.c:453 try_check_zero+0x3aa/0x560 kernel/rcu/srcutree.c:1078
Modules linked in:
CPU: 1 PID: 5262 Comm: kworker/1:4 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: rcu_gp process_srcu
RIP: 0010:srcu_readers_unlock_idx kernel/rcu/srcutree.c:453 [inline]
RIP: 0010:srcu_readers_active_idx_check kernel/rcu/srcutree.c:466 [inline]
RIP: 0010:try_check_zero+0x3aa/0x560 kernel/rcu/srcutree.c:1078
Code: e9 8a fe ff ff 80 3d 04 9d 57 0e 00 0f 85 47 fe ff ff c6 05 f7 9c 57 0e 01 90 48 c7 c7 a0 46 2e 8b 4c 89 f6 e8 37 93 dc ff 90 <0f> 0b 90 90 e9 26 fe ff ff 48 83 c4 48 31 c0 5b 5d 41 5c 41 5d 41
RSP: 0018:ffffc90002b1fb70 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffe8ffffd57600 RCX: ffffffff81511289
RDX: ffff8880200ea440 RSI: ffffffff81511296 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: 000000000000001f
R13: dffffc0000000000 R14: ffffc9000fc868a8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002f810ff8 CR3: 000000006158a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 srcu_advance_state kernel/rcu/srcutree.c:1684 [inline]
 process_srcu+0x3f9/0x1730 kernel/rcu/srcutree.c:1811
 process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (100):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/26 11:41 upstream 55027e689933 dec8bc94 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/26 09:07 upstream 55027e689933 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/26 05:26 upstream 55027e689933 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/25 05:26 upstream 55027e689933 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/23 08:08 upstream 563a50672d8a c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/22 11:33 upstream 35bb670d65fc c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/21 22:59 upstream 66cc544fd75c c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/21 09:59 upstream 50736169ecc8 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/20 21:16 upstream 50736169ecc8 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/20 09:52 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/20 04:12 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/19 15:33 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/18 04:33 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/17 07:46 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/17 05:54 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/17 03:54 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/17 00:47 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/16 23:22 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/16 04:36 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/15 12:16 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/14 18:43 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/14 10:25 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/14 00:12 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/13 11:31 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/13 08:37 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/13 05:38 upstream cea2a26553ac c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/12 16:36 upstream 2ef5971ff345 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/11 00:57 upstream 83a7eefedc9b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/10 17:42 upstream 83a7eefedc9b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/10 11:30 upstream 83a7eefedc9b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/10 07:09 upstream 83a7eefedc9b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/10 00:05 upstream 771ed66105de c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/09 14:45 upstream 771ed66105de c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/09 04:30 upstream 061d1af7b030 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/08 12:22 upstream dc772f8237f9 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/08 10:16 upstream 96e09b8f8166 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/07 11:34 upstream 8a92980606e3 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/06 21:32 upstream d30d0e49da71 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/06 15:06 upstream 2df0193e62cf c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/06 04:41 upstream 71d7b52cc33b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/05 11:34 upstream 32f88d65f01b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/05 10:24 upstream 32f88d65f01b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/04 23:37 upstream 32f88d65f01b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/04 20:05 upstream 32f88d65f01b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/04 17:18 upstream 2ab795141095 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/04 07:49 upstream 2ab795141095 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/03 16:31 upstream c3f38fa61af7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/03 09:12 upstream c3f38fa61af7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/03 02:55 upstream c3f38fa61af7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/06/02 23:32 upstream 83814698cf48 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/05/20 02:44 upstream eb6a9339efeb c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/05/17 08:05 upstream ea5f6ad9ad96 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
2024/05/16 17:21 upstream 3c999d1ae3c7 ad5321c6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in try_check_zero
* Struck through repros no longer work on HEAD.