INFO: task syz-executor:5835 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20160 pid:5835 tgid:5835 ppid:1 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
bch2_fs_read_only+0xb30/0x12a0 fs/bcachefs/super.c:348
__bch2_fs_stop+0x105/0x5c0 fs/bcachefs/super.c:623
generic_shutdown_super+0x139/0x2d0 fs/super.c:642
bch2_kill_sb+0x41/0x50 fs/bcachefs/fs.c:2312
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24f/0x310 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0340f8e117
RSP: 002b:00007ffef0719dc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f034100e08c RCX: 00007f0340f8e117
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffef0719e80
RBP: 00007ffef0719e80 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffef071af10
R13: 00007f034100e08c R14: 0000000000015d05 R15: 00007ffef071af50
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:7/2954:
#0: ffff8880260a4148 ((wq_completion)btree_update){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff8880260a4148 ((wq_completion)btree_update){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc9000b287c60 ((work_completion)(&c->btree_interior_update_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000b287c60 ((work_completion)(&c->btree_interior_update_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3202
#3: ffff88805a3266d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1180
2 locks held by kworker/u8:8/3013:
#0: ffff8880b863e7d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
2 locks held by getty/5585:
#0: ffff8880358d20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000331b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5835:
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88805a300278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 fs/bcachefs/super.c:622
4 locks held by bch-reclaim/loo/6122:
#0: ffff88805a34b028 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:759
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3377
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#2: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3202
#3: ffff88805a3266d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1180
3 locks held by bch-copygc/loop/6146:
#0: ffff88805a304720 (&wb->flushing.lock){+.+.}-{4:4}, at: bch2_btree_write_buffer_flush_nocheck_rw fs/bcachefs/btree_write_buffer.c:601 [inline]
#0: ffff88805a304720 (&wb->flushing.lock){+.+.}-{4:4}, at: bch2_btree_write_buffer_tryflush+0x14b/0x1c0 fs/bcachefs/btree_write_buffer.c:616
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#1: ffff88805a304378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3202
#2: ffff88805a3266d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1180
1 lock held by syz.1.129/7447:
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.8.214/8563:
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88805cb020e0 (&type->s_umount_key#62){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/8746:
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:996
3 locks held by syz.1.265/9117:
1 lock held by syz.0.268/9170:
1 lock held by cmp/9177:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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: 35 Comm: kworker/u8:2 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:hlock_class kernel/locking/lockdep.c:230 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4852 [inline]
RIP: 0010:__lock_acquire+0x4b4/0x2100 kernel/locking/lockdep.c:5178
Code: 13 00 00 44 89 3b 44 89 f3 48 89 d8 48 c1 e8 06 48 8d 3c c5 40 38 2c 94 be 08 00 00 00 e8 14 ae 88 00 48 0f a3 1d ec 74 91 12 <73> 27 48 69 c3 c8 00 00 00 48 8d 98 00 b7 c3 93 48 ba 00 00 00 00
RSP: 0018:ffffc90000ab7850 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000021 RCX: ffffffff819ac34c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942c3840
RBP: 0000000000020021 R08: ffffffff942c3847 R09: 1ffffffff2858708
R10: dffffc0000000000 R11: fffffbfff2858709 R12: ffff8881446ba8d4
R13: 000000000000000a R14: 0000000000000021 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005637faa4af08 CR3: 0000000035372000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
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