syzbot

 sign-in | mailing list | source | docs
🐞 Open [711]
🐞 Fixed [60]
🐞 Invalid [634]
⬇ Missing Backports [62]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

WARNING in __kernel_write

Status: upstream: reported C repro on 2023/03/25 03:02
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+f704b898b11e4a0a9a1f@syzkaller.appspotmail.com
First crash: 637d, last: 383d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2024/11/07 upstream (ToT) ff7afaeca1a1 C [report] BUG: MAX_LOCKDEP_KEYS too low!
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __kernel_write fs C done 522 1605d 1625d 15/28 fixed on 2020/09/16 22:51
▶ ▼ Last patch testing requests (6)
Created Duration User Patch Repo Result
2024/10/15 00:32 0m retest repro linux-5.15.y error
2024/10/06 09:17 25m retest repro linux-5.15.y OK log
2024/10/06 09:17 17m retest repro linux-5.15.y OK log
2024/10/06 09:17 17m retest repro linux-5.15.y OK log
2024/10/06 09:17 16m retest repro linux-5.15.y OK log
2024/10/06 09:17 17m retest repro linux-5.15.y OK log

Sample crash report:
BTRFS info (device loop0): using free space tree
BTRFS info (device loop0): has skinny extents
BTRFS info (device loop0): enabling ssd optimizations
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3968 at fs/read_write.c:525 __kernel_write+0x734/0x8b0
Modules linked in:
CPU: 1 PID: 3968 Comm: syz-executor352 Not tainted 5.15.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __kernel_write+0x734/0x8b0
lr : __kernel_write+0x730/0x8b0 fs/read_write.c:525
sp : ffff800018dc74e0
x29: ffff800018dc7650 x28: ffff7000031b8ea8 x27: ffff0000c92168e8
x26: 0000000000000011 x25: dfff800000000000 x24: 1fffe0001a272860
x23: ffff800018dc7560 x22: fffffffffffffff7 x21: ffff0000d1394304
x20: ffff800018dc7540 x19: ffff0000d1394280 x18: ffff800018dc7520
x17: 1fffe00036903d8e x16: ffff800011941c2c x15: 000000000000c369
x14: 1ffff0000291a06a x13: ffffffffffffffff x12: 0000000000000000
x11: ff8080000896c37c x10: 0000000000000000 x9 : ffff80000896c37c
x8 : ffff0000c8c8b580 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __kernel_write+0x734/0x8b0
 kernel_write+0xe0/0x1ec fs/read_write.c:568
 write_buf fs/btrfs/send.c:565 [inline]
 send_header fs/btrfs/send.c:684 [inline]
 send_subvol+0x164/0x37cc fs/btrfs/send.c:7385
 btrfs_ioctl_send+0x15b0/0x1a50 fs/btrfs/send.c:7711
 _btrfs_ioctl_send+0x340/0x498 fs/btrfs/ioctl.c:4882
 btrfs_ioctl+0x5e0/0xa5c
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 86118
hardirqs last  enabled at (86117): [<ffff800008268c94>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline]
hardirqs last  enabled at (86117): [<ffff800008268c94>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:4780
hardirqs last disabled at (86118): [<ffff80001193d130>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387
softirqs last  enabled at (86052): [<ffff800008030068>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (86050): [<ffff800008030034>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace d3bd68682de7c9d7 ]---

Crashes (115):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/07 15:57 linux-5.15.y 8a7f2a5c5aa1 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/12/03 18:05 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/12/02 07:07 linux-5.15.y a78d278e01b1 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/11/30 19:17 linux-5.15.y a78d278e01b1 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/11/16 17:10 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/10/09 23:02 linux-5.15.y 1edcec18cfb7 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/10/07 14:59 linux-5.15.y 1edcec18cfb7 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/09/20 03:58 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/06/03 06:58 linux-5.15.y 0ab06468cbd1 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/05/29 12:01 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/12/03 12:20 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/12/03 07:54 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/28 21:14 linux-5.15.y a78d278e01b1 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/28 08:10 linux-5.15.y 2a910f4af54d 9fe51b7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/27 16:21 linux-5.15.y 2a910f4af54d 7ec6c044 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/25 13:19 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/20 16:24 linux-5.15.y 2a910f4af54d cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/11/14 12:44 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/20 16:32 linux-5.15.y 00c03985402e 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/20 07:04 linux-5.15.y 00c03985402e a42250d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/20 03:25 linux-5.15.y 00c03985402e a42250d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/19 18:37 linux-5.15.y 02e21884dcf2 42e1d524 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/13 18:54 linux-5.15.y 02e21884dcf2 f757a323 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/13 01:28 linux-5.15.y 02e21884dcf2 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/12 13:09 linux-5.15.y 02e21884dcf2 1b231e3c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/12 10:48 linux-5.15.y 02e21884dcf2 1b231e3c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/12 03:35 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/11 03:14 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/11 01:55 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/10 06:01 linux-5.15.y 1edcec18cfb7 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/10/09 20:43 linux-5.15.y 1edcec18cfb7 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/28 18:53 linux-5.15.y b911329317b4 d265efd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/28 09:10 linux-5.15.y b911329317b4 c2ab1e5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/28 06:21 linux-5.15.y b911329317b4 c2ab1e5d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/27 21:11 linux-5.15.y b911329317b4 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/27 13:49 linux-5.15.y b911329317b4 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/27 12:15 linux-5.15.y b911329317b4 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/23 15:01 linux-5.15.y b911329317b4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/19 15:41 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/17 06:34 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/13 12:26 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/11 23:57 linux-5.15.y aff03380bda4 59da8366 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/11 15:22 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/09 13:31 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/08 17:50 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/07 02:02 linux-5.15.y aff03380bda4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/07 00:37 linux-5.15.y aff03380bda4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/05 02:34 linux-5.15.y 8f790700c974 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/04 19:42 linux-5.15.y 8f790700c974 db3306a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/04 15:56 linux-5.15.y 8f790700c974 db3306a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/04 06:29 linux-5.15.y 8f790700c974 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/09/02 13:20 linux-5.15.y 8f790700c974 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/31 22:47 linux-5.15.y 9e43368a3393 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/31 20:30 linux-5.15.y 9e43368a3393 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/30 19:20 linux-5.15.y 9e43368a3393 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/30 17:30 linux-5.15.y 9e43368a3393 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/05/14 03:17 linux-5.15.y b0ece631f84a 2b9ba477 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/05/10 02:17 linux-5.15.y 8a7f2a5c5aa1 30aa2a7e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/03/25 03:01 linux-5.15.y 115472395b0a 9700afae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __kernel_write
2023/08/29 23:36 linux-5.15.y 5ddfe5cc8716 ce731e62 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/29 21:31 linux-5.15.y 5ddfe5cc8716 ce731e62 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/28 17:54 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
2023/08/28 10:16 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __kernel_write
* Struck through repros no longer work on HEAD.