syzbot


kernel BUG in insert_state

Status: upstream: reported C repro on 2025/02/17 01:39
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+6a7319ed74eea021cf05@syzkaller.appspotmail.com
First crash: 60d, last: 60d
Fix bisection: failed (error log, bisect log)
  
Bug presence (1)
Date Name Commit Repro Result
2025/03/17 upstream (ToT) 4701f33a1070 C [report] BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in insert_state btrfs 3 775d 826d 0/28 auto-obsoleted due to no activity on 2023/07/03 23:50
upstream kernel BUG in insert_state (2) btrfs C error done 7 300d 601d 0/28 auto-obsoleted due to no activity on 2024/09/30 07:00

Sample crash report:
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-io-tree.c:381!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4313 Comm: syz-executor267 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : set_state_bits fs/btrfs/extent-io-tree.c:381 [inline]
pc : insert_state+0x35c/0x360 fs/btrfs/extent-io-tree.c:403
lr : set_state_bits fs/btrfs/extent-io-tree.c:381 [inline]
lr : insert_state+0x35c/0x360 fs/btrfs/extent-io-tree.c:403
sp : ffff8000213973d0
x29: ffff8000213973d0 x28: 00000000fffe5eff x27: 1fffe00019aafb51
x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000fff
x23: 0000000000001000 x22: 00000000fffffff4 x21: 0000000000000fff
x20: ffff0000e1b09400 x19: ffff0000cd57da80 x18: ffff8000213967c0
x17: 0000000000000000 x16: ffff80001231f9fc x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff80000a3d40e0
x8 : ffff0000d8138000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : 00000000ffffffff x4 : 0000000000000a20 x3 : 0000000000000a20
x2 : 0000000000000038 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
 set_state_bits fs/btrfs/extent-io-tree.c:381 [inline]
 insert_state+0x35c/0x360 fs/btrfs/extent-io-tree.c:403
 __set_extent_bit+0xe70/0x1650 fs/btrfs/extent-io-tree.c:1115
 set_record_extent_bits+0x68/0x98 fs/btrfs/extent-io-tree.c:1607
 qgroup_reserve_data+0x214/0x90c fs/btrfs/qgroup.c:3795
 btrfs_qgroup_reserve_data+0x40/0xec fs/btrfs/qgroup.c:3838
 btrfs_check_data_free_space+0x130/0x20c fs/btrfs/delalloc-space.c:152
 btrfs_buffered_write+0x4ac/0xfec fs/btrfs/file.c:1242
 btrfs_do_write_iter+0x3a0/0x1108 fs/btrfs/file.c:1686
 btrfs_file_write_iter+0x2c/0x3c fs/btrfs/file.c:1707
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x610/0x91c fs/read_write.c:584
 ksys_write+0x15c/0x26c fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: aa1903e0 979681ae 17ffff56 97848098 (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/17 02:47 linux-6.1.y 0cbb5f65e52f 40a34ec9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-1-kasan-arm64 kernel BUG in insert_state
2025/02/17 02:12 linux-6.1.y 0cbb5f65e52f 40a34ec9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-1-kasan-arm64 kernel BUG in insert_state
2025/02/17 01:38 linux-6.1.y 0cbb5f65e52f 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in insert_state
* Struck through repros no longer work on HEAD.