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WARNING in __bch2_truncate_folio

Status: upstream: reported C repro on 2024/05/22 20:56
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+3d11e35eeafe176a6c5b@syzkaller.appspotmail.com
First crash: 248d, last: 5d06h
Cause bisection: introduced by (bisect log) :
commit f7643bc9749f270d487c32dc35b578575bf1adb0
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date: Wed Apr 17 05:26:02 2024 +0000

  bcachefs: make btree read errors silent during scan

Crash: WARNING in __bch2_truncate_folio (log)
Repro: C syz .config
  
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly bcachefs report (Sep 2024) 0 (1) 2024/09/13 10:03
[syzbot] Monthly bcachefs report (Jul 2024) 0 (1) 2024/07/12 12:53
[syzbot] [bcachefs?] WARNING in __bch2_truncate_folio 0 (1) 2024/05/22 20:56
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/08/14 21:37 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2024/07/26 09:19 23m retest repro upstream OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5093 at fs/bcachefs/fs-io.c:315 __bch2_truncate_folio+0x2059/0x2450 fs/bcachefs/fs-io.c:315
Modules linked in:
CPU: 0 UID: 0 PID: 5093 Comm: syz-executor230 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__bch2_truncate_folio+0x2059/0x2450 fs/bcachefs/fs-io.c:315
Code: 41 5f 5d c3 cc cc cc cc e8 b4 0f 62 fd 48 c7 c7 30 02 15 8e e8 08 86 e8 ff 89 05 62 85 24 16 e9 a0 e2 ff ff e8 98 0f 62 fd 90 <0f> 0b 90 e9 eb f9 ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c f6
RSP: 0018:ffffc90002b6f8e0 EFLAGS: 00010293
RAX: ffffffff8432c848 RBX: 0000000000000000 RCX: ffff88801cfb0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002b6fbf0 R08: ffffffff8432c22e R09: 1ffffd40001fdb30
R10: dffffc0000000000 R11: fffff940001fdb31 R12: 1ffff11008f0c8fa
R13: ffff888041e006ba R14: 0000000000000000 R15: ffff8880478647d0
FS:  0000555564599380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f951508c0f8 CR3: 000000003d7f4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_truncate_folios fs/bcachefs/fs-io.c:354 [inline]
 bchfs_fpunch+0x115/0x780 fs/bcachefs/fs-io.c:508
 bch2_fallocate_dispatch+0x3e4/0x540 fs/bcachefs/fs-io.c:773
 vfs_fallocate+0x569/0x6e0 fs/open.c:333
 ksys_fallocate fs/open.c:356 [inline]
 __do_sys_fallocate fs/open.c:364 [inline]
 __se_sys_fallocate fs/open.c:362 [inline]
 __x64_sys_fallocate+0xbd/0x110 fs/open.c:362
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f951500ed59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe957ae9b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f951500ed59
RDX: 0000000000000df6 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007f95150885f0 R08: 000055556459a4c0 R09: 000055556459a4c0
R10: 000000000000cee8 R11: 0000000000000246 R12: 00007ffe957ae9e0
R13: 00007ffe957aec08 R14: 431bde82d7b634db R15: 00007f951505803b
 </TASK>

Crashes (298):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/23 22:32 upstream c2ee9f594da8 15fa2979 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/05/22 05:08 upstream b6394d6f7159 1014eca7 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in __bch2_truncate_folio
2024/07/31 17:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c912bf709078 6fde257d .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in __bch2_truncate_folio
2025/01/01 06:16 upstream ccb98ccef0e5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in __bch2_truncate_folio
2024/12/28 10:59 upstream fd0584d220fe d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in __bch2_truncate_folio
2024/12/08 18:49 upstream 7503345ac5f5 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in __bch2_truncate_folio
2024/07/10 03:16 upstream 34afb82a3c67 79d68ada .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in __bch2_truncate_folio
2024/06/06 23:50 upstream 2df0193e62cf 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in __bch2_truncate_folio
2024/05/29 04:39 upstream e0cce98fe279 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in __bch2_truncate_folio
2025/01/20 10:44 upstream ffd294d346d1 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/20 07:38 upstream 9528d418de4d f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/20 04:03 upstream 9528d418de4d f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/19 21:42 upstream 9528d418de4d f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/19 09:52 upstream fda5e3f28400 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/17 21:25 upstream 9bffa1ad25b8 bb91bdd4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/17 05:10 upstream ce69b4019001 f9e07a6e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/16 16:24 upstream 619f0b6fad52 f9e07a6e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/16 13:16 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/15 20:26 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/15 19:12 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/15 14:35 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/14 15:06 upstream c45323b7560e 0dce2409 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/14 03:29 upstream c45323b7560e b1f1cd88 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/12 15:55 upstream b62cef9a5c67 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/11 06:45 upstream 77a903cd8e5a 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/09 01:30 upstream 0b7958fa05d5 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/08 21:41 upstream 0b7958fa05d5 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/08 06:18 upstream 09a0fa92e5b4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/08 04:52 upstream 09a0fa92e5b4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/07 23:30 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/07 03:31 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/05 07:36 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/05 04:12 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/04 19:00 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/04 10:57 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/04 08:56 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/04 06:09 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/04 02:33 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/03 22:08 upstream 0bc21e701a6f 96d578a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/03 07:22 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/02 23:01 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/02 19:15 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/01 14:58 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/01 11:29 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2025/01/01 09:48 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/31 10:14 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/31 01:11 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/30 12:01 upstream fc033cf25e61 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/30 02:26 upstream 4099a71718b0 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/29 23:15 upstream 4099a71718b0 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/28 22:01 upstream fd0584d220fe d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/28 19:37 upstream fd0584d220fe d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/27 23:06 upstream 8379578b11d5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/12/27 14:08 upstream d6ef8b40d075 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __bch2_truncate_folio
2024/05/29 01:38 upstream e0cce98fe279 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __bch2_truncate_folio
2024/05/29 01:41 linux-next 6dc544b66971 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in __bch2_truncate_folio
2025/01/10 16:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 577490b6abb9 67d7ec0a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in __bch2_truncate_folio
2025/01/08 16:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in __bch2_truncate_folio
* Struck through repros no longer work on HEAD.