INFO: task kworker/u4:6:1037 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00212-geb88e6bfbc0a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:6 state:D stack:19128 pid:1037 tgid:1037 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: btree_node_rewrite async_btree_node_rewrite_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
__closure_sync_timeout+0x2d8/0x450 lib/closure.c:217
closure_sync_timeout include/linux/closure.h:206 [inline]
__bch2_wait_on_allocator+0x11a/0x250 fs/bcachefs/alloc_foreground.c:1728
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x1200/0x1540 fs/bcachefs/btree_update_interior.c:1254
bch2_btree_node_rewrite+0x1ba/0x1230 fs/bcachefs/btree_update_interior.c:2144
async_btree_node_rewrite_trans fs/bcachefs/btree_update_interior.c:2217 [inline]
async_btree_node_rewrite_work+0x3fb/0xf60 fs/bcachefs/btree_update_interior.c:2253
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task syz-executor848:5323 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00212-geb88e6bfbc0a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor848 state:D stack:17200 pid:5323 tgid:5323 ppid:5322 task_flags:0x400140 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
__closure_sync_timeout+0x2d8/0x450 lib/closure.c:217
closure_sync_timeout include/linux/closure.h:206 [inline]
__bch2_wait_on_allocator+0x11a/0x250 fs/bcachefs/alloc_foreground.c:1728
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x1200/0x1540 fs/bcachefs/btree_update_interior.c:1254
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1853
bch2_trans_commit_error+0x212/0x1380 fs/bcachefs/btree_trans_commit.c:908
__bch2_trans_commit+0x8105/0x9790 fs/bcachefs/btree_trans_commit.c:1089
bch2_trans_commit fs/bcachefs/btree_update.h:191 [inline]
bch2_journal_replay+0x221b/0x2b10 fs/bcachefs/recovery.c:406
bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:226
bch2_run_recovery_passes+0x2ad/0xa90 fs/bcachefs/recovery_passes.c:291
bch2_fs_recovery+0x265a/0x3de0 fs/bcachefs/recovery.c:936
bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1041
bch2_fs_get_tree+0xdb7/0x17a0 fs/bcachefs/fs.c:2203
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
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: 0033:0x7feb3b77fe2a
RSP: 002b:00007ffceb5721e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffceb572200 RCX: 00007feb3b77fe2a
RDX: 0000400000000040 RSI: 0000400000000000 RDI: 00007ffceb572200
RBP: 0000400000000000 R08: 00007ffceb572240 R09: 0000000000005900
R10: 0000000000800000 R11: 0000000000000282 R12: 0000400000000040
R13: 00007ffceb572240 R14: 0000000000000003 R15: 0000000000800000
</TASK>
INFO: task bch-reclaim/loo:5332 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00212-geb88e6bfbc0a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:22864 pid:5332 tgid:5332 ppid:2 task_flags:0x200840 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
__closure_sync_timeout+0x2d8/0x450 lib/closure.c:217
closure_sync_timeout include/linux/closure.h:206 [inline]
__bch2_wait_on_allocator+0x11a/0x250 fs/bcachefs/alloc_foreground.c:1728
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x1200/0x1540 fs/bcachefs/btree_update_interior.c:1254
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1853
bch2_trans_commit_error+0x212/0x1380 fs/bcachefs/btree_trans_commit.c:908
__bch2_trans_commit+0x8105/0x9790 fs/bcachefs/btree_trans_commit.c:1089
bch2_trans_commit fs/bcachefs/btree_update.h:191 [inline]
bch2_btree_write_buffer_flush_locked+0x4b12/0x5570 fs/bcachefs/btree_write_buffer.c:452
btree_write_buffer_flush_seq+0x1c49/0x1e10 fs/bcachefs/btree_write_buffer.c:570
bch2_btree_write_buffer_journal_flush+0xc7/0x150 fs/bcachefs/btree_write_buffer.c:586
journal_flush_pins+0x89b/0xe40 fs/bcachefs/journal_reclaim.c:589
__bch2_journal_reclaim+0x789/0xda0 fs/bcachefs/journal_reclaim.c:722
bch2_journal_reclaim_thread+0x17a/0x570 fs/bcachefs/journal_reclaim.c:764
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u4:6/1037:
#0: ffff88804085c148 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88804085c148 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc9000252fc60 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000252fc60 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#2: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#2: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3225
#3: ffff8880448a66d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x680/0x1540 fs/bcachefs/btree_update_interior.c:1182
2 locks held by getty/5105:
#0: ffff8880003510a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000019b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
3 locks held by syz-executor848/5323:
#0: ffff888044880278 (&c->state_lock){+.+.}-{4:4}, at: bch2_fs_start+0x45/0x610 fs/bcachefs/super.c:1010
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3225
#2: ffff8880448a66d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x680/0x1540 fs/bcachefs/btree_update_interior.c:1182
4 locks held by bch-reclaim/loo/5332:
#0: ffff8880448cb028 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:763
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff888044884378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3408
#2: ffff888044884720 (&wb->flushing.lock){+.+.}-{4:4}, at: btree_write_buffer_flush_seq+0x1c3f/0x1e10 fs/bcachefs/btree_write_buffer.c:569
#3: ffff8880448a66d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x680/0x1540 fs/bcachefs/btree_update_interior.c:1182
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 26 Comm: khungtaskd Not tainted 6.14.0-rc6-syzkaller-00212-geb88e6bfbc0a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>