INFO: task kworker/1:5:5881 blocked for more than 144 seconds.
Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5 state:D stack:16944 pid:5881 tgid:5881 ppid:2 flags:0x00004000
Workqueue: bcachefs_write_ref bch2_delete_dead_snapshots_work (bcachefs-delete-dead-snapshots/)
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6753
__schedule_loop kernel/sched/core.c:6830 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6845
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:1754
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline]
bch2_btree_update_start+0x11a5/0x14e0 fs/bcachefs/btree_update_interior.c:1263
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1857
bch2_trans_commit_error+0x212/0x1390 fs/bcachefs/btree_trans_commit.c:918
__bch2_trans_commit+0x8069/0x9610 fs/bcachefs/btree_trans_commit.c:1099
bch2_trans_commit fs/bcachefs/btree_update.h:182 [inline]
bch2_delete_dead_snapshots+0x19b6/0x5ae0 fs/bcachefs/snapshot.c:1655
bch2_delete_dead_snapshots_work+0x34/0x40 fs/bcachefs/snapshot.c:1730
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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
INFO: task syz-executor:7373 blocked for more than 145 seconds.
Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20208 pid:7373 tgid:7373 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6753
__schedule_loop kernel/sched/core.c:6830 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6845
bch2_fs_read_only+0xae8/0x1270 fs/bcachefs/super.c:347
__bch2_fs_stop+0x105/0x5c0 fs/bcachefs/super.c:622
generic_shutdown_super+0x139/0x2d0 fs/super.c:642
bch2_kill_sb+0x41/0x50 fs/bcachefs/fs.c:2292
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:239
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: 0033:0x7efc2eb7fa47
RSP: 002b:00007ffd7de4c678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007efc2eb7fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd7de4c730
RBP: 00007ffd7de4c730 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd7de4d7b0
R13: 00007efc2ebf14b4 R14: 000000000008c33b R15: 00007ffd7de4d7f0
INFO: task bch-reclaim/loo:11945 blocked for more than 145 seconds.
Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:23216 pid:11945 tgid:11945 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6753
__schedule_loop kernel/sched/core.c:6830 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6845
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:1754
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline]
bch2_btree_update_start+0x11a5/0x14e0 fs/bcachefs/btree_update_interior.c:1263
bch2_btree_split_leaf+0x121/0x880 fs/bcachefs/btree_update_interior.c:1857
bch2_trans_commit_error+0x212/0x1390 fs/bcachefs/btree_trans_commit.c:918
__bch2_trans_commit+0x8069/0x9610 fs/bcachefs/btree_trans_commit.c:1099
bch2_trans_commit fs/bcachefs/btree_update.h:182 [inline]
bch2_btree_write_buffer_flush_locked+0x4f72/0x5a40 fs/bcachefs/btree_write_buffer.c:429
btree_write_buffer_flush_seq+0x1a43/0x1bc0 fs/bcachefs/btree_write_buffer.c:510
bch2_btree_write_buffer_journal_flush+0x4e/0x80 fs/bcachefs/btree_write_buffer.c:525
journal_flush_pins+0x5f7/0xb20 fs/bcachefs/journal_reclaim.c:565
__bch2_journal_reclaim+0x789/0xdc0 fs/bcachefs/journal_reclaim.c:698
bch2_journal_reclaim_thread+0x17a/0x570 fs/bcachefs/journal_reclaim.c:740
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
INFO: task bch-copygc/loop:11946 blocked for more than 145 seconds.
Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-copygc/loop state:D stack:19632 pid:11946 tgid:11946 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6753
__schedule_loop kernel/sched/core.c:6830 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6845
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:1754
bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline]
__bch2_write+0x562a/0x5dd0 fs/bcachefs/io_write.c:1501
bch2_write+0x9b5/0x1760 fs/bcachefs/io_write.c:1631
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:421
move_write fs/bcachefs/move.c:134 [inline]
bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 fs/bcachefs/move.c:165
bch2_move_ratelimit+0x76c/0xeb0 fs/bcachefs/move.c:501
bch2_evacuate_bucket+0x26ca/0x3630 fs/bcachefs/move.c:711
bch2_copygc+0x42c9/0x4ca0 fs/bcachefs/movinggc.c:240
bch2_copygc_thread+0x6ef/0xba0 fs/bcachefs/movinggc.c:381
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: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93c560 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5589:
#0: ffff888036a320a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032532f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
4 locks held by kworker/1:5/5881:
#0: ffff888064a7cd48 ((wq_completion)bcachefs_write_ref){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888064a7cd48 ((wq_completion)bcachefs_write_ref){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90004217d00 ((work_completion)(&c->snapshot_delete_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90004217d00 ((work_completion)(&c->snapshot_delete_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
#2: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:255 [inline]
#2: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3195
#3: ffff888051326710 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1191
2 locks held by syz-executor/7373:
#0: ffff88807ae780e0 (&type->s_umount_key#101){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ae780e0 (&type->s_umount_key#101){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807ae780e0 (&type->s_umount_key#101){+.+.}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff888051300278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 fs/bcachefs/super.c:621
4 locks held by bch-reclaim/loo/11945:
#0: ffff88805134b128 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:739
#1: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
#1: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:255 [inline]
#1: ffff8880513043a8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3378
#2: ffff888051304750 (&wb->flushing.lock){+.+.}-{4:4}, at: btree_write_buffer_flush_seq+0x1a39/0x1bc0 fs/bcachefs/btree_write_buffer.c:509
#3: ffff888051326710 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1191
3 locks held by syz.3.1599/13767:
#0: ffff888061789a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:817 [inline]
#0: ffff888061789a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline]
#0: ffff888061789a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408
#1: ffff8880341bb258 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1617 [inline]
#1: ffff8880341bb258 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: pptp_release+0x52/0x300 drivers/net/ppp/pptp.c:508
#2: ffffffff8e941af8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#2: ffffffff8e941af8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz.2.1598/13764:
#0: ffff88806a5480e0 (&type->s_umount_key#60/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 fs/super.c:344
3 locks held by dhcpcd-run-hook/13791:
#0: ffff8880b863e798 (&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: ffff88807fd848b8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff88807fd848b8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:402
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:234 [inline]
watchdog+0xffb/0x1040 kernel/hung_task.c:397
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: 13794 Comm: cmp Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:ma_data_end lib/maple_tree.c:1431 [inline]
RIP: 0010:mas_next_node+0xa94/0xe00 lib/maple_tree.c:4638
Code: c0 0f 84 b8 00 00 00 89 d9 80 e1 07 38 c1 0f 8c ab 00 00 00 48 89 df e8 ea ec 4b f6 e9 9e 00 00 00 e8 50 73 e1 f5 4c 8d 63 08 <89> e8 48 8d a8 c0 aa 34 8d 48 89 e8 48 c1 e8 03 48 ba 00 00 00 00
RSP: 0018:ffffc9000366f870 EFLAGS: 00000293
RAX: ffffffff8bbe0876 RBX: ffff88806fe99200 RCX: ffff888036975a00
RDX: 0000000000000000 RSI: ffffffff9003c430 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000005 R09: ffffffff8bbe085e
R10: 0000000000000003 R11: ffff888036975a00 R12: ffff88806fe99208
R13: ffff88806fe98400 R14: 00007f607322bfff R15: dffffc0000000000
FS: 00007f60731a1380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f607328d784 CR3: 000000004cb88000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mas_next_slot+0x456/0xea0 lib/maple_tree.c:4709
mas_find+0x950/0xbb0 lib/maple_tree.c:6058
vma_next include/linux/mm.h:1019 [inline]
validate_mm+0x13f/0x590 mm/vma.c:585
do_brk_flags+0xbc6/0x1070 mm/mmap.c:1574
__do_sys_brk mm/mmap.c:197 [inline]
__se_sys_brk+0xa3a/0xec0 mm/mmap.c:115
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: 0033:0x7f60732f9c7c
Code: 1a 64 c7 03 01 00 00 00 eb 11 64 44 89 23 31 f6 5b 31 ff 5d 41 5c e9 41 ff ff ff 5b 83 c8 ff 5d 41 5c c3 b8 0c 00 00 00 0f 05 <48> 8b 15 d5 61 0d 00 45 31 c0 48 89 02 48 39 c7 76 12 48 8b 05 73
RSP: 002b:00007fff4abda2b8 EFLAGS: 00000206 ORIG_RAX: 000000000000000c
RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007f60732f9c7c
RDX: 00007f60733d81b8 RSI: 00007f60733d0b00 RDI: 000055a56fc1e000
RBP: 00007f60733d0aa0 R08: 0000000000000000 R09: 00007f60733d0d80
R10: 0000000000000037 R11: 0000000000000206 R12: 000055a56fbfd000
R13: 0000000000000290 R14: 0000000000001000 R15: 0000000000000000