| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2025/03/22 | linux-6.1.y (ToT) | 344a09659766 | C | [report] possible deadlock in ocfs2_truncate_file |
| 2025/03/22 | upstream (ToT) | 88d324e69ea9 | C | Didn't crash |
syzbot |
sign-in | mailing list | source | docs |
| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2025/03/22 | linux-6.1.y (ToT) | 344a09659766 | C | [report] possible deadlock in ocfs2_truncate_file |
| 2025/03/22 | upstream (ToT) | 88d324e69ea9 | C | Didn't crash |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| linux-5.15 | possible deadlock in ocfs2_truncate_file origin:lts-only | 4 | C | error | 28 | 53d | 387d | 0/3 | upstream: reported C repro on 2024/10/02 11:36 | |
| upstream | possible deadlock in ocfs2_truncate_file ocfs2 | 4 | C | 657 | 2d05h | 427d | 0/29 | upstream: reported C repro on 2024/08/24 04:12 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2025/08/11 16:55 | 1h35m | fix candidate | upstream | OK (0) job log | |
| 2025/05/05 23:52 | 15m | bisect fix | linux-6.1.y | error job log |
ocfs2: Slot 0 on device (7,0) was already allocated to this node!
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
6.1.129-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor246/4289 is trying to acquire lock:
ffff0000de81e650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_orphan_for_truncate fs/ocfs2/file.c:392 [inline]
ffff0000de81e650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_truncate_file+0x640/0x1618 fs/ocfs2/file.c:496
but task is already holding lock:
ffff0000e16d0660 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_truncate_file+0x38c/0x1618 fs/ocfs2/file.c:467
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&oi->ip_alloc_sem){++++}-{3:3}:
down_read+0x64/0x308 kernel/locking/rwsem.c:1520
ocfs2_read_virt_blocks+0x2bc/0x9f8 fs/ocfs2/extent_map.c:976
ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
ocfs2_find_entry+0x3d0/0x23c4 fs/ocfs2/dir.c:1091
ocfs2_rename+0x1cb4/0x3588 fs/ocfs2/namei.c:1568
vfs_rename+0xac8/0xe04 fs/namei.c:4874
do_renameat2+0x9ec/0xe64 fs/namei.c:5027
__do_sys_renameat2 fs/namei.c:5060 [inline]
__se_sys_renameat2 fs/namei.c:5057 [inline]
__arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057
__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
-> #2 (jbd2_handle){.+.+}-{0:0}:
start_this_handle+0x1140/0x13ac fs/jbd2/transaction.c:463
jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:520
jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:559
ocfs2_start_trans+0x3e8/0x73c fs/ocfs2/journal.c:354
ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline]
ocfs2_reserve_local_alloc_bits+0x9b4/0x2610 fs/ocfs2/localalloc.c:668
ocfs2_reserve_clusters_with_limit+0x194/0xabc fs/ocfs2/suballoc.c:1162
ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1223
ocfs2_mknod+0xe04/0x2560 fs/ocfs2/namei.c:354
ocfs2_mkdir+0x1a8/0x560 fs/ocfs2/namei.c:657
vfs_mkdir+0x334/0x4e4 fs/namei.c:4106
do_mkdirat+0x220/0x510 fs/namei.c:4131
__do_sys_mkdirat fs/namei.c:4146 [inline]
__se_sys_mkdirat fs/namei.c:4144 [inline]
__arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144
__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
-> #1 (&journal->j_trans_barrier){.+.+}-{3:3}:
down_read+0x64/0x308 kernel/locking/rwsem.c:1520
ocfs2_start_trans+0x3dc/0x73c fs/ocfs2/journal.c:352
ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline]
ocfs2_reserve_local_alloc_bits+0x9b4/0x2610 fs/ocfs2/localalloc.c:668
ocfs2_reserve_clusters_with_limit+0x194/0xabc fs/ocfs2/suballoc.c:1162
ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1223
ocfs2_mknod+0xe04/0x2560 fs/ocfs2/namei.c:354
ocfs2_mkdir+0x1a8/0x560 fs/ocfs2/namei.c:657
vfs_mkdir+0x334/0x4e4 fs/namei.c:4106
do_mkdirat+0x220/0x510 fs/namei.c:4131
__do_sys_mkdirat fs/namei.c:4146 [inline]
__se_sys_mkdirat fs/namei.c:4144 [inline]
__arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144
__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
-> #0 (sb_internal#2){.+.+}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1891 [inline]
sb_start_intwrite include/linux/fs.h:2013 [inline]
ocfs2_start_trans+0x260/0x73c fs/ocfs2/journal.c:350
ocfs2_orphan_for_truncate fs/ocfs2/file.c:392 [inline]
ocfs2_truncate_file+0x640/0x1618 fs/ocfs2/file.c:496
ocfs2_setattr+0x142c/0x1b5c fs/ocfs2/file.c:1212
notify_change+0xb58/0xe1c fs/attr.c:499
do_truncate+0x1c0/0x28c fs/open.c:65
handle_truncate fs/namei.c:3285 [inline]
do_open fs/namei.c:3630 [inline]
path_openat+0x1fa0/0x2548 fs/namei.c:3783
do_filp_open+0x1bc/0x3cc fs/namei.c:3810
do_sys_openat2+0x128/0x3e0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
__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
other info that might help us debug this:
Chain exists of:
sb_internal#2 --> jbd2_handle --> &oi->ip_alloc_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&oi->ip_alloc_sem);
lock(jbd2_handle);
lock(&oi->ip_alloc_sem);
lock(sb_internal#2);
*** DEADLOCK ***
3 locks held by syz-executor246/4289:
#0: ffff0000de81e460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393
#1: ffff0000e16d09c8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff0000e16d09c8 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63
#2: ffff0000e16d0660 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_truncate_file+0x38c/0x1618 fs/ocfs2/file.c:467
stack backtrace:
CPU: 1 PID: 4289 Comm: syz-executor246 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2048
check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1891 [inline]
sb_start_intwrite include/linux/fs.h:2013 [inline]
ocfs2_start_trans+0x260/0x73c fs/ocfs2/journal.c:350
ocfs2_orphan_for_truncate fs/ocfs2/file.c:392 [inline]
ocfs2_truncate_file+0x640/0x1618 fs/ocfs2/file.c:496
ocfs2_setattr+0x142c/0x1b5c fs/ocfs2/file.c:1212
notify_change+0xb58/0xe1c fs/attr.c:499
do_truncate+0x1c0/0x28c fs/open.c:65
handle_truncate fs/namei.c:3285 [inline]
do_open fs/namei.c:3630 [inline]
path_openat+0x1fa0/0x2548 fs/namei.c:3783
do_filp_open+0x1bc/0x3cc fs/namei.c:3810
do_sys_openat2+0x128/0x3e0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
__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
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/03/01 09:01 | linux-6.1.y | 3a8358583626 | 67cf5345 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | |
| 2025/10/22 03:56 | linux-6.1.y | 8e6e2188d949 | 252fbbad | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/09/10 02:01 | linux-6.1.y | f97f1002271b | fdeaa69b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/09/08 18:44 | linux-6.1.y | 28c695c365e1 | d291dd2d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/07/29 23:03 | linux-6.1.y | 3594f306da12 | f8f2b4da | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/06/21 03:26 | linux-6.1.y | 58485ff1a74f | d6cdfb8a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/05/28 17:37 | linux-6.1.y | da3c5173c55f | 3d2f584d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/04/04 11:01 | linux-6.1.y | 8e60a714ba3b | 1c4febdb | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/04/04 11:01 | linux-6.1.y | 8e60a714ba3b | 1c4febdb | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/04/04 10:59 | linux-6.1.y | 8e60a714ba3b | 1c4febdb | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/12 04:05 | linux-6.1.y | 6ae7ac5c4251 | ee70e6db | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/07 14:53 | linux-6.1.y | 3a8358583626 | 7e3bd60d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in ocfs2_truncate_file | ||
| 2025/10/21 21:08 | linux-6.1.y | 8e6e2188d949 | 9832ed61 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/10/10 23:50 | linux-6.1.y | 882efbdd9d34 | ff1712fe | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/10/10 23:50 | linux-6.1.y | 882efbdd9d34 | ff1712fe | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/09/01 06:02 | linux-6.1.y | f89b6e15694c | 807a3b61 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/13 09:50 | linux-6.1.y | 6ae7ac5c4251 | 44be8b44 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/12 01:11 | linux-6.1.y | 6ae7ac5c4251 | ee70e6db | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/06 00:05 | linux-6.1.y | 3a8358583626 | 831e3629 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/03/01 08:11 | linux-6.1.y | 3a8358583626 | 67cf5345 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/01/26 10:21 | linux-6.1.y | 75cefdf153f5 | 9fbd772e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2025/01/21 05:23 | linux-6.1.y | f4f677285b38 | 6e87cfa2 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file | ||
| 2024/12/01 05:06 | linux-6.1.y | e4d90d63d385 | 68914665 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in ocfs2_truncate_file |