INFO: task segctord:9263 blocked for more than 143 seconds.
Not tainted 6.3.0-rc3-syzkaller-00016-g2faac9a98f01 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord state:D stack:28696 pid:9263 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
nilfs_segctor_thread_construct fs/nilfs2/segment.c:2488 [inline]
nilfs_segctor_thread+0x52f/0x1140 fs/nilfs2/segment.c:2572
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
2 locks held by kworker/u4:1/11:
#0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
#1: ffff8880b9828788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:976
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf255f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25df0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf25420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4748:
#0: ffff888028b7c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:8/20279:
5 locks held by syz-executor.1/9255:
1 lock held by segctord/9263:
#0: ffff8880300882a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
3 locks held by syz-executor.1/21075:
2 locks held by syz-executor.3/21094:
3 locks held by syz-executor.0/21098:
3 locks held by syz-executor.0/21100:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller-00016-g2faac9a98f01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14016 Comm: kworker/u4:4 Not tainted 6.3.0-rc3-syzkaller-00016-g2faac9a98f01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: phy9 ieee80211_iface_work
RIP: 0010:asm_exc_int3+0x0/0x40 arch/x86/include/asm/idtentry.h:569
Code: e9 25 07 00 00 0f 1f 44 00 00 f3 0f 1e fa 0f 01 ca fc 6a ff e8 21 06 00 00 48 89 c4 48 89 e7 e8 f6 04 e0 ff e9 01 07 00 00 90 0f 1e fa 0f 01 ca fc 6a ff f6 44 24 10 03 75 18 ff 74 24 28 ff
RSP: 0018:ffffc900065b7348 EFLAGS: 00000082
RAX: ffff888012441780 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000060 RDI: ffffffff8d015d00
RBP: ffffffff89ffbba5 R08: 0000000000000920 R09: ffffffff89fc364d
R10: 0000000000000006 R11: ffff888018fe9d40 R12: ffff888012441780
R13: 00000000ffffffff R14: 0000000000000048 R15: 0000000000000920
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75ae623000 CR3: 000000000cd30000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:kfence_alloc include/linux/kfence.h:120 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3438 [inline]
RIP: 0010:__kmem_cache_alloc_node+0x61/0x290 mm/slub.c:3491
Code: 48 8d 54 24 10 b9 01 00 00 00 31 f6 45 89 f8 e8 b5 1b 00 00 48 85 c0 0f 84 01 01 00 00 49 89 c4 4c 89 34 24 48 89 6c 24 08 cc <1f> 44 00 00 48 c7 44 24 18 00 00 00 00 41 b0 01 49 8b 04 24 65 48
RSP: 0018:ffffc900065b7378 EFLAGS: 00000282
__do_kmalloc_node mm/slab_common.c:966 [inline]
__kmalloc+0xa8/0x230 mm/slab_common.c:980
kmalloc include/linux/slab.h:584 [inline]
kzalloc include/linux/slab.h:720 [inline]
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2464 [inline]
cfg80211_inform_bss_frame_data+0x5a5/0x2320 net/wireless/scan.c:2525
ieee80211_bss_info_update+0x801/0xf00 net/mac80211/scan.c:190
ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x192f/0x2cf0 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1637
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308