INFO: task bch-copygc/loop:5225 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-copygc/loop state:D stack:20272 pid:5225 tgid:5225 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5264 [inline]
__schedule+0x1843/0x4b00 kernel/sched/core.c:6607
__schedule_loop kernel/sched/core.c:6684 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6699
__closure_sync+0x259/0x2f0 lib/closure.c:146
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:238 [inline]
__bch2_write+0x55a7/0x5d20 fs/bcachefs/io_write.c:1506
bch2_write+0x947/0x1670 fs/bcachefs/io_write.c:1633
closure_queue include/linux/closure.h:270 [inline]
closure_call include/linux/closure.h:432 [inline]
bch2_data_update_read_done+0x22e/0x330 fs/bcachefs/data_update.c:423
move_write fs/bcachefs/move.c:133 [inline]
bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 fs/bcachefs/move.c:164
bch2_move_ratelimit+0x76c/0xeb0 fs/bcachefs/move.c:492
bch2_evacuate_bucket+0x2618/0x34d0 fs/bcachefs/move.c:702
bch2_copygc+0x3a03/0x4650 fs/bcachefs/movinggc.c:234
bch2_copygc_thread+0x737/0xc20 fs/bcachefs/movinggc.c:375
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
2 locks held by kworker/u8:2/35:
2 locks held by getty/4970:
#0: ffff888032dd80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 4659 Comm: klogd Not tainted 6.11.0-syzkaller-07462-g1868f9d0260e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4824 [inline]
RIP: 0010:__lock_acquire+0x5e7/0x2050 kernel/locking/lockdep.c:5149
Code: 41 8b 1f 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 97 21 94 be 08 00 00 00 e8 e1 f2 88 00 48 0f a3 1d 99 61 b1 12 <73> 26 48 69 c3 c8 00 00 00 48 8d 98 80 16 be 93 48 ba 00 00 00 00
RSP: 0018:ffffc9000315f7f0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000001a RCX: ffffffff817035df
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff94219780
RBP: 0000000000000002 R08: ffffffff94219787 R09: 1ffffffff28432f0
R10: dffffc0000000000 R11: fffffbfff28432f1 R12: ffff88807c32da00
R13: 000000000000001a R14: 1ffff1100f865ca0 R15: ffff88807c32e500
FS: 00007f69bf6b0380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd0c0ca130 CR3: 000000007be62000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:941 [inline]
pfn_valid include/linux/mmzone.h:2022 [inline]
__virt_addr_valid+0x1a0/0x530 arch/x86/mm/physaddr.c:65
check_heap_object mm/usercopy.c:189 [inline]
__check_object_size+0x10d/0x900 mm/usercopy.c:251
check_object_size include/linux/thread_info.h:215 [inline]
check_copy_size include/linux/thread_info.h:251 [inline]
copy_to_user include/linux/uaccess.h:203 [inline]
syslog_print+0x7b2/0x9c0 kernel/printk/printk.c:1665
do_syslog+0x3bb/0x810 kernel/printk/printk.c:1766
__do_sys_syslog kernel/printk/printk.c:1858 [inline]
__se_sys_syslog kernel/printk/printk.c:1856 [inline]
__x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1856
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f69bf811fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff89c9ff38 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f69bf9b04a0 RCX: 00007f69bf811fa7
RDX: 00000000000003ff RSI: 00007f69bf9b04a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 38ca4bf154e1e160
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f69bf9b04a0
R13: 00007f69bf9a0212 R14: 00007f69bf9b051e R15: 00007f69bf9b051e
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.350 msecs