syzbot


kernel BUG in clear_state_bit

Status: upstream: reported C repro on 2023/06/24 20:08
Bug presence: origin:lts-only
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+51ab883f63134b0ac7ef@syzkaller.appspotmail.com
First crash: 479d, last: 7d16h
Fix bisection: failed (error log, bisect log)
  
Bug presence (2)
Date Name Commit Repro Result
2024/10/08 linux-5.15.y (ToT) 3a5928702e71 C [report] kernel BUG in clear_state_bit
2024/10/08 upstream (ToT) 87d6aab2389e C Didn't crash
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in clear_state_bit origin:upstream missing-backport C inconclusive 4 218d 479d 0/3 upstream: reported C repro on 2023/06/24 17:54
upstream kernel BUG in clear_state_bit btrfs C done 61 12d 690d 0/28 upstream: reported C repro on 2022/11/25 09:46
Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/10/01 19:22 14m retest repro linux-5.15.y report log
2024/10/01 19:22 13m retest repro linux-5.15.y report log
2024/10/01 19:22 15m retest repro linux-5.15.y report log
Fix bisection attempts (3)
Created Duration User Patch Repo Result
2024/09/02 10:53 1m fix candidate upstream error job log
2024/03/24 11:01 0m fix candidate upstream error job log
2023/10/07 14:12 0m bisect fix linux-5.15.y error job log

Sample crash report:
RSP: 002b:00007ffe955b1908 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007ffe955b1930 RCX: 00007f13d68372e9
RDX: 00007f13d68363b0 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 00007ffe955b16a7 R09: 00007ffe955b1950
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffe955b192c
R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007ffe955b1970
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent_io.c:658!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3550 Comm: syz-executor287 Not tainted 5.15.126-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:clear_state_bit+0x572/0x580 fs/btrfs/extent_io.c:658
Code: e8 03 71 64 fe e9 2f fb ff ff 44 89 e9 80 e1 07 38 c1 0f 8c 66 fc ff ff 4c 89 ef e8 c8 70 64 fe e9 59 fc ff ff e8 7e f6 1a fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffc90002e6f4e8 EFLAGS: 00010293
RAX: ffffffff83651b82 RBX: 00000000fffffff4 RCX: ffff8880759f5940
RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000
RBP: ffffc90002e6f798 R08: ffffffff8365194b R09: fffffbfff193ea03
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000
R13: ffff8880710d5910 R14: 0000000000000000 R15: ffff88801aaaa898
FS:  0000555555997380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020009000 CR3: 0000000023b1c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __clear_extent_bit+0x6f2/0xda0 fs/btrfs/extent_io.c:835
 clear_record_extent_bits+0x52/0x70 fs/btrfs/extent_io.c:1450
 __btrfs_qgroup_release_data+0x4a0/0xa50 fs/btrfs/qgroup.c:3837
 btrfs_invalidatepage+0x5f5/0x890 fs/btrfs/inode.c:8802
 do_invalidatepage mm/truncate.c:157 [inline]
 truncate_cleanup_page+0x179/0x440 mm/truncate.c:176
 truncate_inode_pages_range+0x2e7/0x1290 mm/truncate.c:325
 truncate_inode_pages mm/truncate.c:425 [inline]
 truncate_pagecache mm/truncate.c:735 [inline]
 truncate_setsize+0xcb/0xf0 mm/truncate.c:760
 btrfs_setsize fs/btrfs/inode.c:5429 [inline]
 btrfs_setattr+0x6fd/0xf70 fs/btrfs/inode.c:5468
 notify_change+0xd4d/0x1000 fs/attr.c:488
 do_truncate+0x21c/0x300 fs/open.c:65
 do_sys_ftruncate+0x2eb/0x390 fs/open.c:193
 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+0x61/0xcb
RIP: 0033:0x7f13d68372e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe955b1908 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007ffe955b1930 RCX: 00007f13d68372e9
RDX: 00007f13d68363b0 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 00007ffe955b16a7 R09: 00007ffe955b1950
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffe955b192c
R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007ffe955b1970
 </TASK>
Modules linked in:
---[ end trace 9708ba50e7cf4939 ]---
RIP: 0010:clear_state_bit+0x572/0x580 fs/btrfs/extent_io.c:658
Code: e8 03 71 64 fe e9 2f fb ff ff 44 89 e9 80 e1 07 38 c1 0f 8c 66 fc ff ff 4c 89 ef e8 c8 70 64 fe e9 59 fc ff ff e8 7e f6 1a fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffc90002e6f4e8 EFLAGS: 00010293
RAX: ffffffff83651b82 RBX: 00000000fffffff4 RCX: ffff8880759f5940
RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000
RBP: ffffc90002e6f798 R08: ffffffff8365194b R09: fffffbfff193ea03
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000
R13: ffff8880710d5910 R14: 0000000000000000 R15: ffff88801aaaa898
FS:  0000555555997380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020009000 CR3: 0000000023b1c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/16 00:54 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan kernel BUG in clear_state_bit
2024/07/21 18:22 linux-5.15.y 7c6d66f0266f b88348e9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in clear_state_bit
2023/06/24 20:08 linux-5.15.y f67653019430 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in clear_state_bit
2024/07/21 17:15 linux-5.15.y 7c6d66f0266f b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in clear_state_bit
* Struck through repros no longer work on HEAD.