INFO: task kworker/0:1H:2025 blocked for more than 143 seconds. Not tainted 5.12.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1H state:D stack:27856 pid: 2025 ppid: 2 flags:0x00004000 Workqueue: glock_workqueue glock_work_func Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x137/0x150 kernel/locking/rwsem.c:1407 freeze_super+0x41/0x330 fs/super.c:1664 freeze_go_sync+0x1e2/0x330 fs/gfs2/glops.c:574 do_xmote+0x2ff/0xbc0 fs/gfs2/glock.c:630 run_queue+0x323/0x680 fs/gfs2/glock.c:767 glock_work_func+0xff/0x3f0 fs/gfs2/glock.c:934 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task syz-executor.0:12045 blocked for more than 143 seconds. Not tainted 5.12.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:25632 pid:12045 ppid: 8414 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 schedule_timeout+0x1db/0x250 kernel/time/timer.c:1868 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x168/0x270 kernel/sched/completion.c:138 flush_workqueue+0x3ff/0x13e0 kernel/workqueue.c:2838 gfs2_gl_hash_clear+0xc8/0x270 fs/gfs2/glock.c:1998 gfs2_fill_super+0x2005/0x2680 fs/gfs2/ops_fstype.c:1254 get_tree_bdev+0x440/0x760 fs/super.c:1292 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1277 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:2903 [inline] path_mount+0x132a/0x1f90 fs/namespace.c:3233 do_mount fs/namespace.c:3246 [inline] __do_sys_mount fs/namespace.c:3454 [inline] __se_sys_mount fs/namespace.c:3431 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3431 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x46797a RSP: 002b:00007f1b92f86fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046797a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f1b92f87000 RBP: 00007f1b92f87040 R08: 00007f1b92f87040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f1b92f87000 R15: 0000000020047a20 Showing all locks held in the system: 1 lock held by khungtaskd/1639: #0: ffffffff8bf74360 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6327 3 locks held by kworker/0:1H/2025: #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff8880177e9538 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90007387da8 ((work_completion)(&(&gl->gl_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff88806fbbc0e0 (&type->s_umount_key#62){+.+.}-{3:3}, at: freeze_super+0x41/0x330 fs/super.c:1664 1 lock held by in:imklog/8111: 2 locks held by kworker/0:4/9658: #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc9001676fda8 ((kfence_timer).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 1 lock held by syz-executor.0/12045: #0: ffff88806fbbc0e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xab0 fs/super.c:229 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1639 Comm: khungtaskd Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd48/0xfb0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy6 ieee80211_iface_work RIP: 0010:__this_cpu_preempt_check+0xd/0x20 lib/smp_processor_id.c:70 Code: 00 00 48 c7 c6 c0 19 c2 89 48 c7 c7 00 1a c2 89 e9 98 fe ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 0f 1f 44 00 00 48 89 ee 5d <48> c7 c7 40 1a c2 89 e9 77 fe ff ff cc cc cc cc cc cc cc 0f 1f 44 RSP: 0018:ffffc90000dfebf0 EFLAGS: 00000046 RAX: 0000000000000005 RBX: a51d0481363db5b7 RCX: ffffc90000dfec48 RDX: 1ffff110022cd84c RSI: ffffffff896b97e0 RDI: ffffffff896b97e0 RBP: 1ffff920001bfd81 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000006 R12: 0000000000000005 R13: 0000000000000006 R14: ffff88801166c268 R15: ffff88801166b880 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f29a1279000 CR3: 000000002d752000 CR4: 0000000000350ef0 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:437 [inline] lock_release+0x3bb/0x720 kernel/locking/lockdep.c:5532 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:191 debug_object_activate+0x287/0x3e0 lib/debugobjects.c:684 debug_object_activate+0x337/0x3e0 lib/debugobjects.c:702 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline] kvfree_call_rcu+0x97/0x7d0 kernel/rcu/tree.c:3567 cfg80211_update_known_bss+0x833/0xa60 net/wireless/scan.c:1651 cfg80211_bss_update+0xef/0x1c60 net/wireless/scan.c:1698 cfg80211_inform_single_bss_frame_data+0x6e8/0xe90 net/wireless/scan.c:2400 cfg80211_inform_bss_frame_data+0xa7/0xb10 net/wireless/scan.c:2433 ieee80211_bss_info_update+0x3ce/0xb20 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline] ieee80211_rx_mgmt_probe_beacon+0xccd/0x16b0 net/mac80211/ibss.c:1615 ieee80211_ibss_rx_queued_mgmt+0xe43/0x1870 net/mac80211/ibss.c:1642 ieee80211_iface_work+0x761/0x9e0 net/mac80211/iface.c:1439 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294