INFO: task syz.2.100:6692 blocked for more than 143 seconds.
Not tainted 6.15.0-rc5-syzkaller-00353-gcd802e7e5f1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.100 state:D stack:14440 pid:6692 tgid:6691 ppid:5818 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
__closure_sync+0x163/0x220 lib/closure.c:146
closure_sync include/linux/closure.h:195 [inline]
bch2_journal_res_get_slowpath+0x88d/0x950 fs/bcachefs/journal.c:753
bch2_journal_res_get+0x206/0x8f0 fs/bcachefs/journal.h:401
bch2_trans_journal_res_get fs/bcachefs/btree_trans_commit.c:352 [inline]
bch2_trans_commit_error+0x353/0x1100 fs/bcachefs/btree_trans_commit.c:895
__bch2_trans_commit+0x779c/0x8ae0 fs/bcachefs/btree_trans_commit.c:1069
bch2_trans_commit fs/bcachefs/btree_update.h:195 [inline]
check_dirent fs/bcachefs/fsck.c:2242 [inline]
bch2_check_dirents+0x19ae/0x2460 fs/bcachefs/fsck.c:2272
bch2_run_recovery_pass+0xdf/0x1d0 fs/bcachefs/recovery_passes.c:227
bch2_run_recovery_passes+0x2a0/0xdb0 fs/bcachefs/recovery_passes.c:280
bch2_fs_recovery+0x2399/0x37b0 fs/bcachefs/recovery.c:937
bch2_fs_start+0x70b/0xae0 fs/bcachefs/super.c:1096
bch2_fs_get_tree+0xad7/0x13b0 fs/bcachefs/fs.c:2505
vfs_get_tree+0x8f/0x2b0 fs/super.c:1759
do_new_mount+0x24a/0xa40 fs/namespace.c:3881
do_mount fs/namespace.c:4221 [inline]
__do_sys_mount fs/namespace.c:4432 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4409
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2ff799010a
RSP: 002b:00007f2ff87e4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2ff87e4ef0 RCX: 00007f2ff799010a
RDX: 00002000000000c0 RSI: 0000200000000000 RDI: 00007f2ff87e4eb0
RBP: 00002000000000c0 R08: 00007f2ff87e4ef0 R09: 0000000000800000
R10: 0000000000800000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f2ff87e4eb0 R14: 0000000000005992 R15: 0000200000000100
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8df3d860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8df3d860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8df3d860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6764
3 locks held by kworker/u8:4/82:
2 locks held by getty/5579:
#0: ffff888034a7a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900033532f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by udevd/5940:
5 locks held by syz.4.407/9111:
#0: ffff888148e774b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff8880598f8420 (sb_writers#17){++++}-{0:0}, at: sb_wait_write fs/super.c:1855 [inline]
#1: ffff8880598f8420 (sb_writers#17){++++}-{0:0}, at: freeze_super+0x4c2/0xeb0 fs/super.c:2044
#2: ffff8880598f80e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#2: ffff8880598f80e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff8880598f80e0 (&type->s_umount_key#62){++++}-{4:4}, at: freeze_super+0x4ca/0xeb0 fs/super.c:2045
#3:
ffff8880598f8518 (sb_pagefaults#4){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1855 [inline]
ffff8880598f8518 (sb_pagefaults#4){+.+.}-{0:0}, at: freeze_super+0x4f1/0xeb0 fs/super.c:2049
#4: ffff8880598f8610 (sb_internal#6){++++}-{0:0}, at: sb_wait_write fs/super.c:1855 [inline]
#4: ffff8880598f8610 (sb_internal#6){++++}-{0:0}, at: freeze_super+0x7aa/0xeb0 fs/super.c:2063
2 locks held by syz.3.410/9120:
1 lock held by syz.1.411/9129:
#0: ffff88804b2340e0 (&type->s_umount_key#63/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 fs/super.c:344
2 locks held by dhcpcd-run-hook/9131:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc5-syzkaller-00353-gcd802e7e5f1e #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:437
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9129 Comm: syz.1.411 Not tainted 6.15.0-rc5-syzkaller-00353-gcd802e7e5f1e #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:format_decode+0x2f/0xe30 lib/vsprintf.c:2576
Code: 41 55 41 54 53 48 83 ec 28 49 89 d5 49 89 f6 48 89 fd e8 24 91 74 f6 41 0f b6 de 48 89 df 48 c7 c6 30 ef 64 8f e8 91 96 74 f6 <80> fb 02 4c 89 6c 24 08 4c 89 74 24 18 0f 84 19 06 00 00 41 0f b6
RSP: 0018:ffffc900038fef10 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000001
RDX: ffffffff8b4b3d6f RSI: ffffffff8f64ef30 RDI: 0000000000000000
RBP: ffffffff8b6b6580 R08: ffff8880249ebc00 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000002 R12: ffffc900038ff060
R13: ffffc900038fefb8 R14: 0000000000000000 R15: ffffffff8b6b6580
FS: 00007f4f791cd6c0(0000) GS:ffff8881261fb000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056489608f138 CR3: 0000000048228000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x102/0xf00 lib/vsprintf.c:2795
sprintf+0xd9/0x120 lib/vsprintf.c:3015
print_time kernel/printk/printk.c:1381 [inline]
info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407
record_print_text+0x154/0x430 kernel/printk/printk.c:1456
printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xc4/0x270 kernel/printk/printk.c:3325
vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450
_printk+0xcf/0x120 kernel/printk/printk.c:2475
__xfs_printk fs/xfs/xfs_message.c:24 [inline]
xfs_printk_level+0x18b/0x280 fs/xfs/xfs_message.c:44
xlog_recover+0x318/0x3e0 fs/xfs/xfs_log_recover.c:3481
xfs_log_mount+0x253/0x3e0 fs/xfs/xfs_log.c:667
xfs_mountfs+0xe5e/0x22f0 fs/xfs/xfs_mount.c:884
xfs_fs_fill_super+0x1230/0x1670 fs/xfs/xfs_super.c:1915
get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1636
vfs_get_tree+0x8f/0x2b0 fs/super.c:1759
do_new_mount+0x24a/0xa40 fs/namespace.c:3881
do_mount fs/namespace.c:4221 [inline]
__do_sys_mount fs/namespace.c:4432 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4409
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f7839010a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4f791cce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4f791ccef0 RCX: 00007f4f7839010a
RDX: 0000200000000280 RSI: 0000200000000580 RDI: 00007f4f791cceb0
RBP: 0000200000000280 R08: 00007f4f791ccef0 R09: 0000000000014800
R10: 0000000000014800 R11: 0000000000000246 R12: 0000200000000580
R13: 00007f4f791cceb0 R14: 0000000000009806 R15: 0000200000000140