syzbot


WARNING in filemap_unaccount_folio

Status: upstream: reported C repro on 2024/05/22 02:55
Subsystems: nilfs btrfs
[Documentation on labels]
Reported-by: syzbot+026119922c20a8915631@syzkaller.appspotmail.com
First crash: 40d, last: 1d06h
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in account_page_dirtied (log)
Repro: C syz .config
  
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly nilfs report (Jun 2024) 0 (1) 2024/06/10 20:56
[syzbot] [nilfs?] [btrfs?] WARNING in filemap_unaccount_folio 0 (1) 2024/05/22 02:55
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in filemap_unaccount_folio 1 66d 66d 0/3 upstream: reported on 2024/04/09 19:10

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5096 at mm/filemap.c:217 filemap_unaccount_folio+0x6be/0xe40 mm/filemap.c:216
Modules linked in:
CPU: 1 PID: 5096 Comm: syz-executor306 Not tainted 6.9.0-syzkaller-10729-gb6394d6f7159 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:filemap_unaccount_folio+0x6be/0xe40 mm/filemap.c:216
Code: 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 e5 00 00 00 8b 6d 00 ff c5 e9 45 fa ff ff e8 c3 66 ca ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 0a 48 8b
RSP: 0018:ffffc9000382f1f8 EFLAGS: 00010093
RAX: ffffffff81cbd3ad RBX: ffff888079ef0380 RCX: ffff88802d4f5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff81cbd2c9 R09: 1ffffd40000c1ec8
R10: dffffc0000000000 R11: fffff940000c1ec9 R12: 1ffffd40000c1ec8
R13: ffffea000060f640 R14: 1ffff1100f3de070 R15: ffffea000060f648
FS:  00007f13ab0c76c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002ca92000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 delete_from_page_cache_batch+0x173/0xc70 mm/filemap.c:341
 truncate_inode_pages_range+0x364/0xfc0 mm/truncate.c:359
 truncate_inode_pages mm/truncate.c:439 [inline]
 truncate_pagecache mm/truncate.c:732 [inline]
 truncate_setsize+0xcf/0xf0 mm/truncate.c:757
 simple_setattr+0xbe/0x110 fs/libfs.c:886
 notify_change+0xbb4/0xe70 fs/attr.c:499
 do_truncate+0x220/0x310 fs/open.c:65
 handle_truncate fs/namei.c:3308 [inline]
 do_open fs/namei.c:3654 [inline]
 path_openat+0x2a3d/0x3280 fs/namei.c:3807
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
 do_sys_open fs/open.c:1420 [inline]
 __do_sys_creat fs/open.c:1496 [inline]
 __se_sys_creat fs/open.c:1490 [inline]
 __x64_sys_creat+0x123/0x170 fs/open.c:1490
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13ab131c99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f13ab0c7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f13ab1bf6d8 RCX: 00007f13ab131c99
RDX: 00007f13ab131c99 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 00007f13ab1bf6d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13ab18c160
R13: 000000000000006e R14: 0030656c69662f2e R15: 00007f13ab186bc0
 </TASK>

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/22 02:54 upstream b6394d6f7159 1014eca7 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs WARNING in filemap_unaccount_folio
2024/06/13 07:45 upstream cea2a26553ac 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in filemap_unaccount_folio
2024/06/11 12:44 upstream 83a7eefedc9b b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in filemap_unaccount_folio
2024/05/31 06:22 upstream 4a4be1ad3a6e 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in filemap_unaccount_folio
2024/05/25 03:04 upstream 02c438bbfffe a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in filemap_unaccount_folio
2024/05/23 06:01 upstream 8f6a15f095a6 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in filemap_unaccount_folio
2024/05/22 01:37 upstream b6394d6f7159 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in filemap_unaccount_folio
2024/05/20 22:14 upstream eb6a9339efeb c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in filemap_unaccount_folio
2024/06/14 12:07 linux-next a957267fa7e9 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in filemap_unaccount_folio
2024/06/03 11:30 linux-next 861a3cb5a2a8 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in filemap_unaccount_folio
2024/05/06 05:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 78186bd77b47 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in filemap_unaccount_folio
* Struck through repros no longer work on HEAD.