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WARNING in __kernel_write_iter

Status: upstream: reported C repro on 2023/03/20 18:36
Labels: origin:upstream (incorrect?)
Reported-by: syzbot+78d9dc0d718d214e0bf2@syzkaller.appspotmail.com
First crash: 78d, last: 2d12h
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/05/08 upstream (ToT) ac9a78681b92 C [report] WARNING in __kernel_write_iter
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __kernel_write_iter btrfs C inconclusive 449 3h10m 239d 0/24 upstream: reported C repro on 2022/10/10 07:04

Sample crash report:
BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 scanned by syz-executor965 (3538)
BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm
BTRFS info (device loop0): using free space tree
BTRFS info (device loop0): enabling ssd optimizations
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3538 at fs/read_write.c:504 __kernel_write_iter+0x600/0x710
Modules linked in:
CPU: 0 PID: 3538 Comm: syz-executor965 Not tainted 6.1.31-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__kernel_write_iter+0x600/0x710 fs/read_write.c:504
Code: 25 28 00 00 00 48 3b 84 24 e0 00 00 00 0f 85 18 01 00 00 4c 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 30 81 9b ff <0f> 0b 49 c7 c6 f7 ff ff ff eb a5 e8 20 81 9b ff 4c 8b 74 24 18 eb
RSP: 0018:ffffc90003b8f720 EFLAGS: 00010293
RAX: ffffffff81ee5440 RBX: 00000000000a001d RCX: ffff888014311dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003b8f850 R08: ffffffff81ee4f15 R09: ffffc90003b8f8c0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000771ef0 R14: ffff888022bb6f00 R15: 1ffff11004576def
FS:  000055555622a300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005647a62530a8 CR3: 000000001fd08000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __kernel_write fs/read_write.c:537 [inline]
 kernel_write+0x1d4/0x350 fs/read_write.c:558
 write_buf fs/btrfs/send.c:591 [inline]
 send_header fs/btrfs/send.c:709 [inline]
 send_subvol+0x1a7/0x4af0 fs/btrfs/send.c:7675
 btrfs_ioctl_send+0x21bc/0x26d0 fs/btrfs/send.c:8041
 _btrfs_ioctl_send+0x2fb/0x430 fs/btrfs/ioctl.c:5242
 btrfs_ioctl+0x5eb/0xc10
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4bb80b6849
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdf787d748 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4bb80b6849
RDX: 0000000020000140 RSI: 0000000040489426 RDI: 0000000000000003
RBP: 00007f4bb8076110 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4bb80761a0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (127):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/06/04 12:37 linux-6.1.y d2869ace6eeb a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in __kernel_write_iter
2023/05/07 23:47 linux-6.1.y ca48fc16c493 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/05 09:52 linux-6.1.y ca48fc16c493 518a39a6 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/27 11:46 linux-6.1.y a343b0dd87b4 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __kernel_write_iter
2023/05/10 01:23 linux-6.1.y ca48fc16c493 30aa2a7e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __kernel_write_iter
2023/05/07 14:05 linux-6.1.y ca48fc16c493 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __kernel_write_iter
2023/04/29 13:09 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __kernel_write_iter
2023/06/03 05:59 linux-6.1.y d2869ace6eeb a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/14 18:07 linux-6.1.y bf4ad6fa4e53 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/08 18:12 linux-6.1.y ca48fc16c493 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/05 09:38 linux-6.1.y ca48fc16c493 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/03 02:53 linux-6.1.y ca48fc16c493 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/03 01:52 linux-6.1.y ca48fc16c493 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/02 17:03 linux-6.1.y ca48fc16c493 52d40fd2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/01 07:22 linux-6.1.y ca48fc16c493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/05/01 03:05 linux-6.1.y ca48fc16c493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/29 01:56 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/28 23:37 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/28 11:43 linux-6.1.y ca1c9012c941 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/28 07:24 linux-6.1.y ca1c9012c941 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/27 17:15 linux-6.1.y ca1c9012c941 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/27 15:06 linux-6.1.y ca1c9012c941 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/27 04:15 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/27 00:13 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/26 19:53 linux-6.1.y ca1c9012c941 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/26 17:17 linux-6.1.y ca1c9012c941 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/26 04:01 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/25 19:12 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/25 13:16 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/25 05:23 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/25 02:48 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/24 14:44 linux-6.1.y f17b0ab65d17 fdc18293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/23 15:46 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/22 13:03 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/21 14:56 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/21 04:36 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/20 23:02 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/20 20:42 linux-6.1.y f17b0ab65d17 a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/20 17:26 linux-6.1.y f17b0ab65d17 a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 23:57 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 20:07 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 11:52 linux-6.1.y 0102425ac76b 94b4184e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 07:44 linux-6.1.y 0102425ac76b 94b4184e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 03:02 linux-6.1.y 0102425ac76b d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/19 01:34 linux-6.1.y 0102425ac76b d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/18 20:56 linux-6.1.y 0102425ac76b d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/18 17:55 linux-6.1.y 0102425ac76b d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/18 02:10 linux-6.1.y 0102425ac76b 436577a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/17 23:48 linux-6.1.y 0102425ac76b 436577a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/04/17 11:38 linux-6.1.y 0102425ac76b c6ec7083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
2023/03/20 18:35 linux-6.1.y 7eaef76fbc46 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __kernel_write_iter
* Struck through repros no longer work on HEAD.