syzbot


kernel BUG in set_state_bits

Status: upstream: reported C repro on 2022/12/01 12:20
Labels: btrfs (incorrect?)
Reported-by: syzbot+b9d2e54d2301324657ed@syzkaller.appspotmail.com
First crash: 180d, last: 16d

Cause bisection: introduced by (bisect log) :
commit 05fd9564e9faf0f23b4676385e27d9405cef6637
Author: Darrick J. Wong <djwong@kernel.org>
Date: Mon Mar 14 17:55:32 2022 +0000

  btrfs: fix fallocate to use file_modified to update permissions consistently

Crash: kernel BUG in set_state_bits (log)
Repro: C syz .config
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] kernel BUG in set_state_bits 0 (3) 2023/01/21 14:15
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 kernel BUG in set_state_bits origin:upstream C 4 2d08h 56d 0/3 upstream: reported C repro on 2023/04/03 19:24
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/04/21 06:52 47m bisect fix upstream job log (0) log
2023/03/10 05:40 24m bisect fix upstream job log (0) log

Sample crash report:
RSP: 002b:00007fff6c381d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7dbd462b49
RDX: 0000000020000000 RSI: 0000000040305839 RDI: 0000000000000005
RBP: 00007fff6c381da0 R08: 0000000000000002 R09: 00007fff6c381db0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007fff6c381de0 R14: 00007fff6c381dc0 R15: 0000000000000002
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-io-tree.c:379!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5116 Comm: syz-executor365 Not tainted 6.3.0-rc3-syzkaller-00016-g2faac9a98f01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:set_state_bits.isra.0+0x17b/0x1c0 fs/btrfs/extent-io-tree.c:379
Code: 38 d0 7c 04 84 d2 75 31 44 8b 73 7c e8 fe 22 f9 fd 44 89 e0 44 09 f0 89 43 7c 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 e5 22 f9 fd <0f> 0b 4c 89 ef e8 ab 2b 4a fe e9 e6 fe ff ff 4c 89 ef e8 9e 2b 4a
RSP: 0018:ffffc90003f8f7c8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880210ad240 RCX: 0000000000000000
RDX: ffff8880783d9d40 RSI: ffffffff8389c21b RDI: 0000000000000005
RBP: 00000000fffffff4 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000000 R12: 0000000000000800
R13: ffff8880210ad2bc R14: 000000000000ffff R15: 0000000000000000
FS:  0000555556b8c300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7dbd4da140 CR3: 000000002b1b3000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 __set_extent_bit+0xb6d/0x15e0 fs/btrfs/extent-io-tree.c:1042
 set_record_extent_bits+0x5c/0x90 fs/btrfs/extent-io-tree.c:1690
 qgroup_reserve_data+0x233/0xa80 fs/btrfs/qgroup.c:3777
 btrfs_qgroup_reserve_data+0x2f/0xd0 fs/btrfs/qgroup.c:3820
 btrfs_zero_range fs/btrfs/file.c:2997 [inline]
 btrfs_fallocate+0x1441/0x2820 fs/btrfs/file.c:3114
 vfs_fallocate+0x48b/0xe40 fs/open.c:324
 ioctl_preallocate+0x18e/0x200 fs/ioctl.c:290
 file_ioctl fs/ioctl.c:335 [inline]
 do_vfs_ioctl+0x129a/0x1670 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x10c/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7dbd462b49
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007fff6c381d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7dbd462b49
RDX: 0000000020000000 RSI: 0000000040305839 RDI: 0000000000000005
RBP: 00007fff6c381da0 R08: 0000000000000002 R09: 00007fff6c381db0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007fff6c381de0 R14: 00007fff6c381dc0 R15: 0000000000000002
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:set_state_bits.isra.0+0x17b/0x1c0 fs/btrfs/extent-io-tree.c:379
Code: 38 d0 7c 04 84 d2 75 31 44 8b 73 7c e8 fe 22 f9 fd 44 89 e0 44 09 f0 89 43 7c 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 e5 22 f9 fd <0f> 0b 4c 89 ef e8 ab 2b 4a fe e9 e6 fe ff ff 4c 89 ef e8 9e 2b 4a
RSP: 0018:ffffc90003f8f7c8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880210ad240 RCX: 0000000000000000
RDX: ffff8880783d9d40 RSI: ffffffff8389c21b RDI: 0000000000000005
RBP: 00000000fffffff4 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000000 R12: 0000000000000800
R13: ffff8880210ad2bc R14: 000000000000ffff R15: 0000000000000000
FS:  0000555556b8c300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7dbd4da140 CR3: 000000002b1b3000 CR4: 0000000000350ee0

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/03/22 06:25 upstream 2faac9a98f01 8b4eb097 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in set_state_bits
2022/12/11 05:17 upstream 296a7b7eb792 67be1ae7 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in set_state_bits
2023/05/13 22:59 linux-next e922ba281a8d 2b9ba477 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in set_state_bits
2023/05/12 22:41 linux-next e922ba281a8d ecca8a24 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in set_state_bits
2023/01/09 17:02 linux-next 543b9b2fe10b 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in set_state_bits
2023/01/08 04:23 linux-next cc3c08b41a9c 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in set_state_bits
2023/02/08 05:39 upstream 513c1a3d3f19 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in set_state_bits
2023/01/28 22:37 upstream 5af6ce704936 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in set_state_bits
2023/01/21 08:43 upstream ff83fec8179e 559a440a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in set_state_bits
2022/12/01 05:36 upstream 04aa64375f48 4c2a66e8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in set_state_bits
* Struck through repros no longer work on HEAD.