INFO: task kworker/u8:9:2995 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-00624-g2f2d52945852 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:9 state:D stack:20752 pid:2995 tgid:2995 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: btree_node_rewrite async_btree_node_rewrite_work
Call Trace:
context_switch kernel/sched/core.c:5373 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6760
__schedule_loop kernel/sched/core.c:6837 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6852
__closure_sync+0x259/0x2f0 lib/closure.c:146
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x134d/0x1680 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
INFO: task syz.1.131:7049 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-00624-g2f2d52945852 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.131 state:D stack:17840 pid:7049 tgid:7048 ppid:5841 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5373 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6760
__schedule_loop kernel/sched/core.c:6837 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6852
__closure_sync+0x259/0x2f0 lib/closure.c:146
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x134d/0x1680 fs/bcachefs/btree_update_interior.c:1254
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1853
bch2_trans_commit_error+0x211/0x1480 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:1759
do_new_mount+0x2be/0xb40 fs/namespace.c:3878
do_mount fs/namespace.c:4218 [inline]
__do_sys_mount fs/namespace.c:4429 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4406
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: 0033:0x7fdff798e90a
RSP: 002b:00007fdff8759e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdff8759ef0 RCX: 00007fdff798e90a
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007fdff8759eb0
RBP: 0000200000000040 R08: 00007fdff8759ef0 R09: 0000000000808004
R10: 0000000000808004 R11: 0000000000000246 R12: 0000200000000000
R13: 00007fdff8759eb0 R14: 000000000000594a R15: 0000200000000240
INFO: task bch-reclaim/loo:7096 blocked for more than 145 seconds.
Not tainted 6.14.0-syzkaller-00624-g2f2d52945852 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:22360 pid:7096 tgid:7096 ppid:2 task_flags:0x200840 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5373 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6760
__schedule_loop kernel/sched/core.c:6837 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6852
__closure_sync+0x259/0x2f0 lib/closure.c:146
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:237 [inline]
bch2_btree_update_start+0x134d/0x1680 fs/bcachefs/btree_update_interior.c:1254
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1853
bch2_trans_commit_error+0x211/0x1480 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
Showing all locks held in the system:
4 locks held by kworker/u8:0/12:
3 locks held by kworker/1:0/26:
#0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b080d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc90000a0fc60 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000a0fc60 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffff888062e92240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x314/0x3f00 drivers/net/netdevsim/fib.c:1490
1 lock held by khungtaskd/31:
#0: ffffffff8eb39420 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb39420 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb39420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:9/2995:
#0: ffff888027f45948 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888027f45948 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc9000b9d7c60 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000b9d7c60 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#2: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#2: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3225
#3: ffff8880673266d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x685/0x1680 fs/bcachefs/btree_update_interior.c:1182
2 locks held by getty/5591:
#0: ffff88803180f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036ab2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
3 locks held by syz.1.131/7049:
#0: ffff888067300278 (&c->state_lock){+.+.}-{4:4}, at: bch2_fs_start+0x45/0x610 fs/bcachefs/super.c:1010
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3225
#2: ffff8880673266d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x685/0x1680 fs/bcachefs/btree_update_interior.c:1182
4 locks held by bch-reclaim/loo/7096:
#0: ffff88806734b028 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:763
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff888067304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3408
#2: ffff888067304720 (&wb->flushing.lock){+.+.}-{4:4}, at: btree_write_buffer_flush_seq+0x1c3f/0x1e10 fs/bcachefs/btree_write_buffer.c:569
#3: ffff8880673266d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x685/0x1680 fs/bcachefs/btree_update_interior.c:1182
2 locks held by syz-executor/8704:
#0: ffffffff8fec2308 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fec2308 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
#1: ffffffff8eb3e8f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#1: ffffffff8eb3e8f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x820 kernel/rcu/tree_exp.h:996
2 locks held by syz-executor/8805:
#0: ffff8880465a80e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880465a80e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880465a80e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffffffff8eb3e7c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:3736
3 locks held by kworker/u8:10/9197:
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc90003aefc60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003aefc60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffffffff8fec2308 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:285
5 locks held by dhcpcd-run-hook/10612:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-00624-g2f2d52945852 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10614 Comm: dhcpcd-run-hook Not tainted 6.14.0-syzkaller-00624-g2f2d52945852 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__rcu_read_lock+0x7/0xb0 kernel/rcu/tree_plugin.h:413
Code: ff ff e9 b9 fc ff ff e8 27 7f 59 0a 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 <41> 56 53 49 be 00 00 00 00 00 fc ff df 65 4c 8b 3c 25 00 d5 03 00
RSP: 0000:ffffc9000429f678 EFLAGS: 00000293
RAX: ffffffff823287f4 RBX: ffffea000168ef00 RCX: ffff88801d739e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffea000168ef00
RBP: ffffea0000000000 R08: ffffffff82329ced R09: 1ffffffff207770e
R10: dffffc0000000000 R11: fffffbfff207770f R12: 0000000000000001
R13: 0000000000000001 R14: 1ffff92000853ee4 R15: ffffea000168ef00
FS: 00007fb126967380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d053ad01a8 CR3: 000000007e804000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock include/linux/rcupdate.h:847 [inline]
page_ext_get+0x19/0x2a0 mm/page_ext.c:525
page_table_check_set+0x4f/0x540 mm/page_table_check.c:114
__page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:288 [inline]
wp_page_copy mm/memory.c:3517 [inline]
do_wp_page+0x3dad/0x49b0 mm/memory.c:3839
handle_pte_fault mm/memory.c:5904 [inline]
__handle_mm_fault+0x2303/0x6ef0 mm/memory.c:6031
handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6200
do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fb126a6d6df
Code: 4c 2c 08 01 48 39 cd 74 7e 49 83 4c 24 08 04 eb 76 48 8b 55 70 49 8d 04 1c 48 8d 3d 55 d8 0e 00 4c 3b 72 18 0f 85 51 f8 ff ff <4c> 89 70 18 48 89 50 10 48 89 45 70 48 89 42 18 48 81 fb ff 03 00
RSP: 002b:00007ffdd12fdcc0 EFLAGS: 00010246
RAX: 000055d053ad0190 RBX: 0000000000001040 RCX: 00007fb126b96aa0
RDX: 00007fb126b96b00 RSI: 0000000000000020 RDI: 00007fb126b5af2a
RBP: 00007fb126b96aa0 R08: 00007fb126b96d50 R09: 0000000000000040
R10: 0000000000000112 R11: 0000000000000000 R12: 000055d053acf150
R13: 00000000000014a0 R14: 00007fb126b96b00 R15: 0000000000000460