INFO: task bch-reclaim/loo:6904 blocked for more than 143 seconds.
Not tainted 6.11.0-next-20240927-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:24344 pid:6904 tgid:6904 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
bch2_journal_reclaim_thread+0x167/0x560 fs/bcachefs/journal_reclaim.c:739
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: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
4 locks held by kworker/u8:6/1113:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900041c7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900041c7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc6810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
1 lock held by udevd/4684:
2 locks held by getty/4983:
#0: ffff88802e56f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:3/5236:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90003c27d00 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90003c27d00 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8e93d240 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4561
2 locks held by kworker/u8:8/5417:
4 locks held by syz-executor/5757:
1 lock held by bch-reclaim/loo/6904:
#0: ffff88806024b0a8 (&j->reclaim_lock){+.+.}-{3:3}, at: bch2_journal_reclaim_thread+0x167/0x560 fs/bcachefs/journal_reclaim.c:739
1 lock held by syz-executor/7890:
2 locks held by syz.2.456/8023:
2 locks held by syz.2.456/8026:
4 locks held by kvm-nx-lpage-re/8024:
#0: ffffffff8e96c4e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#0: ffffffff8e96c4e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x27/0xe0 kernel/cgroup/cgroup-v1.c:67
#1: ffffffff8e7d1dd0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock+0x11/0x40 kernel/cgroup/cgroup.c:2435
#2: ffffffff8e96c6d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x31/0xe0 kernel/cgroup/cgroup-v1.c:68
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by kvm-nx-lpage-re/8047:
#0: ffffffff8e96c4e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#0: ffffffff8e96c4e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x27/0xe0 kernel/cgroup/cgroup-v1.c:67
1 lock held by syz.3.465/8051:
#0: ffff8880301aba98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff8880301aba98 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17c/0x3d0 mm/util.c:586
1 lock held by syz.3.465/8053:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-next-20240927-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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: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: 7890 Comm: syz-executor Not tainted 6.11.0-next-20240927-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:pmd_none arch/x86/include/asm/pgtable.h:1069 [inline]
RIP: 0010:vmap_pages_pte_range mm/vmalloc.c:497 [inline]
RIP: 0010:vmap_pages_pmd_range mm/vmalloc.c:529 [inline]
RIP: 0010:vmap_pages_pud_range mm/vmalloc.c:547 [inline]
RIP: 0010:vmap_pages_p4d_range mm/vmalloc.c:565 [inline]
RIP: 0010:vmap_small_pages_range_noflush mm/vmalloc.c:587 [inline]
RIP: 0010:__vmap_pages_range_noflush+0x3d8/0xb50 mm/vmalloc.c:616
Code: 39 ee 48 0f 43 5c 24 58 48 89 9c 24 b8 00 00 00 4d 89 fd 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 ff e8 6b f3 11 00 49 8b 1f <48> 89 de 48 83 e6 9f 31 ff e8 7a 36 a8 ff 48 83 e3 9f 0f 84 6e 03
RSP: 0018:ffffc90004b5f2e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000022f0a067 RCX: ffff88802caa0000
RDX: 0000000000000000 RSI: ffffc900034e3fff RDI: ffffc900035fffff
RBP: ffffc90004b5f450 R08: ffffffff81eca3b8 R09: 1ffffffff3485184
R10: dffffc0000000000 R11: fffffbfff3485185 R12: dffffc0000000000
R13: 1ffff1100375e21a R14: ffffc900035fffff R15: ffff88801baf10d0
FS: 0000555585a7d500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32a3108ef8 CR3: 000000005126a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vmap_pages_range_noflush mm/vmalloc.c:641 [inline]
vmap_pages_range mm/vmalloc.c:661 [inline]
__vmalloc_area_node mm/vmalloc.c:3690 [inline]
__vmalloc_node_range_noprof+0xfbe/0x13f0 mm/vmalloc.c:3828
__vmalloc_node_noprof mm/vmalloc.c:3893 [inline]
vzalloc_noprof+0x79/0x90 mm/vmalloc.c:3966
alloc_counters+0xd7/0x740 net/ipv4/netfilter/ip_tables.c:799
copy_entries_to_user net/ipv4/netfilter/ip_tables.c:821 [inline]
get_entries net/ipv4/netfilter/ip_tables.c:1022 [inline]
do_ipt_get_ctl+0xed1/0x1810 net/ipv4/netfilter/ip_tables.c:1668
nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x222/0x2e0 net/ipv4/ip_sockglue.c:1777
tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4670
do_sock_getsockopt+0x3c4/0x7e0 net/socket.c:2392
__sys_getsockopt+0x267/0x330 net/socket.c:2421
__do_sys_getsockopt net/socket.c:2431 [inline]
__se_sys_getsockopt net/socket.c:2428 [inline]
__x64_sys_getsockopt+0xb5/0xd0 net/socket.c:2428
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: 0033:0x7f32a2f7fd3a
Code: ff c3 66 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7
RSP: 002b:00007ffd34b01788 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffd34b01810 RCX: 00007f32a2f7fd3a
RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffd34b017ac R09: 00007ffd34b01bc7
R10: 00007ffd34b01810 R11: 0000000000000212 R12: 00007f32a3109bc0
R13: 00007ffd34b017ac R14: 0000000000000000 R15: 00007f32a310b000