loop4: detected capacity change from 0 to 264192 EXT4-fs (loop4): VFS: Can't find ext4 filesystem EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem. INFO: task rcu_gp:3 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:rcu_gp state:I stack:30328 pid:3 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task rcu_par_gp:4 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:rcu_par_gp state:I stack:30944 pid:4 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task slub_flushwq:5 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:slub_flushwq state:I stack:30944 pid:5 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task netns:6 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:netns state:I stack:30944 pid:6 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task kworker/0:0H:8 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0H state:I stack:28952 pid:8 ppid:2 flags:0x00004000 Workqueue: 0x0 (kblockd) Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 worker_thread+0x15f/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task mm_percpu_wq:10 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:mm_percpu_wq state:I stack:30944 pid:10 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task rcu_tasks_kthre:11 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:rcu_tasks_kthre state:I stack:29272 pid:11 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rcu_tasks_one_gp+0x3db/0xc10 rcu_tasks_kthread+0x80/0xa0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task kworker/1:0H:21 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0H state:I stack:29536 pid:21 ppid:2 flags:0x00004000 Workqueue: 0x0 (events_highpri) Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 worker_thread+0x15f/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task inet_frag_wq:23 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:inet_frag_wq state:I stack:30704 pid:23 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 INFO: task writeback:28 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-next-20220930 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:writeback state:I stack:30944 pid:28 ppid:2 flags:0x00004000 Call Trace: __schedule+0x893/0x2470 schedule+0xda/0x1b0 rescuer_thread+0x851/0xdb0 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffffffff85406850 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc10 1 lock held by khungtaskd/25: #0: ffffffff85407320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 1 lock held by in:imklog/188: 2 locks held by syz-executor/5782: ============================================= audit: type=1400 audit(1664700274.018:7): avc: denied { open } for pid=5789 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1400 audit(1664700274.018:8): avc: denied { kernel } for pid=5789 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop2: detected capacity change from 0 to 16383 hrtimer: interrupt took 37430 ns ------------[ cut here ]------------ ======================================================