kernel BUG in set_state_bits

Status: upstream: reported C repro on 2023/04/03 19:24
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+ad704c01c5da34051e01@syzkaller.appspotmail.com
First crash: 1223d, last: 28d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/05/28 upstream (ToT) 416839029e38 C [report] kernel BUG in insert_state_fast
2025/05/27 upstream (ToT) 44ed0f35df34 C Failed due to an error; will retry later
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in set_state_bits origin:upstream missing-backport -1 syz, C inconclusive 4 42d 468d 0/3 upstream: reported C repro on 2025/04/28 01:43
upstream kernel BUG in set_state_bits (2) btrfs prio:high -1 2 7d14h 3d05h 0/29 upstream: reported on 2026/08/06 00:13
upstream kernel BUG in set_state_bits btrfs -1 syz, C done done 97 763d 1346d 0/29 auto-obsoleted due to no activity on 2025/11/10 23:39
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/07/11 14:27 16m retest repro linux-5.15.y report log
2026/07/11 14:27 16m retest repro linux-5.15.y report log
2026/06/01 01:27 16m retest repro linux-5.15.y report log
2026/06/01 01:27 40m retest repro linux-5.15.y report log
2026/06/01 01:27 43m retest repro linux-5.15.y report log
2026/06/01 01:27 19m retest repro linux-5.15.y report log
2026/04/14 12:46 13m retest repro linux-5.15.y report log
2026/04/14 12:46 10m retest repro linux-5.15.y report log
2026/03/18 07:30 11m retest repro linux-5.15.y report log
2026/03/18 07:30 15m retest repro linux-5.15.y report log

Sample crash report:
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent_io.c:939!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4022 Comm: syz-executor788 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : set_state_bits+0x370/0x374 fs/btrfs/extent_io.c:939
lr : set_state_bits+0x370/0x374 fs/btrfs/extent_io.c:939
sp : ffff80001f0b7520
x29: ffff80001f0b7520 x28: ffff0000de798a90 x27: 0000000000001000
x26: dfff800000000000 x25: 0000000000000001 x24: 0000000000000107
x23: 0000000000000000 x22: 0000000000001fff x21: 0000000000001000
x20: 00000000fffffff4 x19: ffff0000c8d0f4b0 x18: 0000000000000002
x17: 0000000000000000 x16: ffff8000111a97c4 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000000000000000 x9 : ffff800009ed32e0
x8 : ffff0000c1f0b680 x7 : 0000000000000000 x6 : 0000000000000001
x5 : ffff80001f0b6a78 x4 : 0000000000000100 x3 : 0000000000000a20
x2 : 0000000000000038 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
 set_state_bits+0x370/0x374 fs/btrfs/extent_io.c:939
 insert_state fs/btrfs/extent_io.c:572 [inline]
 set_extent_bit+0xdd8/0x13f4 fs/btrfs/extent_io.c:1022
 set_record_extent_bits+0x70/0x94 fs/btrfs/extent_io.c:1422
 qgroup_reserve_data+0x20c/0x81c fs/btrfs/qgroup.c:3727
 btrfs_qgroup_reserve_data+0x40/0xec fs/btrfs/qgroup.c:3770
 btrfs_check_data_free_space+0x208/0x2f4 fs/btrfs/delalloc-space.c:145
 btrfs_buffered_write+0x37c/0xccc fs/btrfs/file.c:1728
 btrfs_file_write_iter+0x19c/0xbe8 fs/btrfs/file.c:2094
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x7c8/0xa2c fs/read_write.c:594
 ksys_write+0x120/0x210 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 97a5e44c f9400fa8 17ffff50 979695d0 (d4210000) 
---[ end trace 54abee02aeaa9ba9 ]---

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/20 07:49 linux-5.15.y 1c700860e8bc ed3e87f7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/03/03 05:29 linux-5.15.y c16c81c81336 c3901742 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2024/11/16 19:59 linux-5.15.y d98fd109f827 cfe3a04a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2024/07/14 23:45 linux-5.15.y f45bea23c39c eaeb5c15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/10/11 10:53 linux-5.15.y 02e21884dcf2 83165b57 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/05/28 02:20 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/06/20 07:04 linux-5.15.y 1c700860e8bc ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/04/07 02:28 linux-5.15.y 0c935c049b5c 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/03/14 18:40 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/03/08 06:26 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/03/03 04:48 linux-5.15.y c16c81c81336 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2025/02/23 00:33 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2024/11/16 19:20 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2024/09/01 16:13 linux-5.15.y fa93fa65db6e 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2024/07/14 22:41 linux-5.15.y f45bea23c39c eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/10/11 05:43 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/08/12 07:47 linux-5.15.y 24c4de4069cb 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/06/23 22:19 linux-5.15.y f67653019430 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/04/20 06:34 linux-5.15.y 4fdad925aa1a a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/04/14 03:07 linux-5.15.y 4fdad925aa1a 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
2023/04/03 19:24 linux-5.15.y c957cbb87315 41147e3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in set_state_bits
* Struck through repros no longer work on HEAD.