INFO: task segctord:3791 blocked for more than 143 seconds.
Not tainted 6.1.106-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord state:D stack:28248 pid:3791 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
nilfs_segctor_thread_construct fs/nilfs2/segment.c:2556 [inline]
nilfs_segctor_thread+0x547/0x11a0 fs/nilfs2/segment.c:2641
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b190 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32b990 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/27:
#0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3394:
#0: ffff88814b925098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
4 locks held by udevd/3633:
#0: ffff888022218418 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xae/0xd10 fs/seq_file.c:182
#1: ffff88805a7ccc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4f/0x3a0 fs/kernfs/file.c:154
#2: ffff888052f01830 (kn->active#31){.+.+}-{0:0}, at: kernfs_seq_start+0x6e/0x3a0 fs/kernfs/file.c:155
#3: ffff8880765ad190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:842 [inline]
#3: ffff8880765ad190 (&dev->mutex){....}-{3:3}, at: product_show+0x22/0x90 drivers/usb/core/sysfs.c:140
3 locks held by syz.2.25/3777:
1 lock held by segctord/3791:
#0: ffff88805db852a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
5 locks held by kworker/1:13/3900:
#0: ffff8880172e3538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc90004a97d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff888022619190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888022619190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5730 drivers/usb/core/hub.c:5801
#3: ffff8880765ad190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff8880765ad190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:990
#4: ffff88801eeec118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff88801eeec118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:990
2 locks held by syz.0.1033/6549:
1 lock held by segctord/6555:
#0: ffff888016efa2a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
5 locks held by kworker/1:20/7077:
#0: ffff8880172e3538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc9000441fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff888022641190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888022641190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5730 drivers/usb/core/hub.c:5801
#3: ffff88801eeef190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff88801eeef190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:990
#4: ffff88801eee9118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff88801eee9118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:990
1 lock held by syz.1.1882/8758:
#0: ffffffff8d3305b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#0: ffffffff8d3305b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f0/0x930 kernel/rcu/tree_exp.h:962
1 lock held by syz.4.1884/8763:
#0: ffff88807c01e0e0 (&type->s_umount_key#63/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3633 Comm: udevd Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:59 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0x274/0x2220 arch/x86/kernel/unwind_orc.c:448
Code: 87 e2 18 00 00 45 39 e0 0f 84 c0 02 00 00 4e 8d 34 a5 1c a9 a5 8e 45 29 e0 4b 8d 6c 86 fc 4d 89 f4 4c 39 f5 0f 83 f7 01 00 00 <4d> 29 f4 48 bf 00 00 00 00 00 fc ff df e9 82 02 00 00 48 c7 c5 40
RSP: 0018:ffffc900001e0540 EFLAGS: 00000212
RAX: ffffffff8edddd08 RBX: ffffffff8edddd0c RCX: ffffffff8edddd10
RDX: ffffffff8f645184 RSI: ffffffff863e5d70 RDI: dffffc0000000000
RBP: ffffffff8edddd0c R08: 0000000000000001 R09: ffffc900001e0710
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8edddd0c
R13: ffffffff863e5d6f R14: ffffffff8edddd0c R15: ffffffff8edddd10
FS: 00007f91624c9c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c421480 CR3: 000000007911a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
__kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674
skb_free_head net/core/skbuff.c:762 [inline]
skb_release_data+0x5de/0x7a0 net/core/skbuff.c:791
skb_release_all net/core/skbuff.c:856 [inline]
__kfree_skb net/core/skbuff.c:870 [inline]
consume_skb+0xa3/0x140 net/core/skbuff.c:1035
mac80211_hwsim_beacon_tx+0x5f8/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2116
__iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788
ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824
mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1767
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 3f aa 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003c6fac0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200078df64 RCX: 1ffff9200078df04
RDX: dffffc0000000000 RSI: ffffffff8b0c13e0 RDI: ffffffff8b5d62c0
RBP: ffffc90003c6fc08 R08: dffffc0000000000 R09: fffffbfff20e7645
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200078df60
R13: dffffc0000000000 R14: ffffc90003c6fb20 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
get_obj_cgroup_from_current+0xf1/0x280 mm/memcontrol.c:3016
memcg_slab_pre_alloc_hook mm/slab.h:485 [inline]
slab_pre_alloc_hook+0x90/0x300 mm/slab.h:715
slab_alloc_node mm/slub.c:3318 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x4a/0x2d0 mm/slub.c:3429
__d_alloc+0x31/0x710 fs/dcache.c:1774
d_alloc+0x48/0x1d0 fs/dcache.c:1854
lookup_one_qstr_excl+0xca/0x240 fs/namei.c:1601
do_unlinkat+0x293/0x820 fs/namei.c:4376
__do_sys_unlink fs/namei.c:4440 [inline]
__se_sys_unlink fs/namei.c:4438 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4438
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f91625a0da7
Code: f0 ff ff 73 01 c3 48 8b 0d 7e 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd0bb64108 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007ffd0bb64118 RCX: 00007f91625a0da7
RDX: 0000000000000000 RSI: 00007ffd0bb630c7 RDI: 00007ffd0bb64118
RBP: 00005600a42a4660 R08: 0000000000000000 R09: 00007ffd0bb63a88
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000bb3
R13: 00005600a428daf0 R14: 0000000000000008 R15: 00005600a4284910