INFO: task syz-executor.3:8837 blocked for more than 143 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29384 pid: 8837 ppid: 8836 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f7bf9150188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f7bf912f000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc21b0cdff R14: 00007f7bf9150300 R15: 0000000000022000 INFO: task syz-executor.0:8848 blocked for more than 143 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29032 pid: 8848 ppid: 8847 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f79dd9e6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f79dd9c5000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff8661c49f R14: 00007f79dd9e6300 R15: 0000000000022000 INFO: task syz-executor.4:8852 blocked for more than 143 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29384 pid: 8852 ppid: 8851 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f2bc6fe0188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f2bc6fbf000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc117a839f R14: 00007f2bc6fe0300 R15: 0000000000022000 INFO: task syz-executor.1:8858 blocked for more than 144 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29728 pid: 8858 ppid: 8857 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007fea52f47188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fea52f26000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffdb9ecf3bf R14: 00007fea52f47300 R15: 0000000000022000 INFO: task syz-executor.2:8870 blocked for more than 144 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29848 pid: 8870 ppid: 8869 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f89eca2d188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f89eca0c000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff067820af R14: 00007f89eca2d300 R15: 0000000000022000 INFO: task syz-executor.0:8889 blocked for more than 144 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29848 pid: 8889 ppid: 8888 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f79dd9e6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f79dd9c5000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff8661c49f R14: 00007f79dd9e6300 R15: 0000000000022000 INFO: task syz-executor.4:8901 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29848 pid: 8901 ppid: 8899 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f2bc6fe0188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f2bc6fbf000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc117a839f R14: 00007f2bc6fe0300 R15: 0000000000022000 INFO: task syz-executor.2:8920 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29848 pid: 8920 ppid: 8919 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f89eca2d188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f89eca0c000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff067820af R14: 00007f89eca2d300 R15: 0000000000022000 INFO: task syz-executor.0:8936 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29848 pid: 8936 ppid: 8935 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f79dd9e6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f79dd9c5000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff8661c49f R14: 00007f79dd9e6300 R15: 0000000000022000 INFO: task syz-executor.5:9331 blocked for more than 145 seconds. Not tainted 5.16.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29728 pid: 9331 ppid: 9330 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:4972 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x174/0x270 kernel/sched/completion.c:138 __do_sys_io_destroy fs/aio.c:1401 [inline] __se_sys_io_destroy fs/aio.c:1379 [inline] __x64_sys_io_destroy+0x15a/0x1b0 fs/aio.c:1379 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f6449283188 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f6449262000 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe2a7caf7f R14: 00007f6449283300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by ksoftirqd/1/19: #0: ffff8880b9f39a58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x1e/0x30 kernel/sched/core.c:478 #1: ffff8880b9f279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871 1 lock held by khungtaskd/26: #0: ffffffff8ad787c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 1 lock held by in:imklog/6267: #0: ffff888021ff0ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11a/0x160 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0x88c/0xbf0 kernel/hung_task.c:295 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 994 Comm: kworker/u4:4 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:match_held_lock+0xe/0xc0 kernel/locking/lockdep.c:5089 Code: 48 c7 c7 60 56 eb 88 e8 7e 6a be ff e8 b8 1b cf ff 31 c0 5d c3 0f 1f 80 00 00 00 00 53 48 89 fb 48 83 ec 08 48 39 77 10 74 6a <66> f7 47 22 f0 ff 74 5a 48 8b 46 08 48 89 f7 48 85 c0 74 42 8b 15 RSP: 0018:ffffc90004a67b30 EFLAGS: 00000087 RAX: 0000000000000005 RBX: ffff88801a80c3c8 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8ad78700 RDI: ffff88801a80c3c8 RBP: ffffffff8ad78700 R08: 0000000000000000 R09: ffffffff8ca1d297 R10: fffffbfff1943a52 R11: 0000000000000001 R12: ffff88801a80b980 R13: ffff88801a80c3a0 R14: 00000000ffffffff R15: ffff88801a80c3c8 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd80cdf4000 CR3: 0000000071f2e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_is_held kernel/locking/lockdep.c:5380 [inline] lock_is_held_type+0xa7/0x140 kernel/locking/lockdep.c:5680 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5608 rcu_lock_acquire include/linux/rcupdate.h:268 [inline] rcu_read_lock include/linux/rcupdate.h:688 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x108/0xd70 net/batman-adv/network-coding.c:723 process_one_work+0x87f/0x1450 kernel/workqueue.c:2298 worker_thread+0x598/0x1040 kernel/workqueue.c:2445 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 48 c7 c7 60 56 eb 88 mov $0xffffffff88eb5660,%rdi 7: e8 7e 6a be ff callq 0xffbe6a8a c: e8 b8 1b cf ff callq 0xffcf1bc9 11: 31 c0 xor %eax,%eax 13: 5d pop %rbp 14: c3 retq 15: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 1c: 53 push %rbx 1d: 48 89 fb mov %rdi,%rbx 20: 48 83 ec 08 sub $0x8,%rsp 24: 48 39 77 10 cmp %rsi,0x10(%rdi) 28: 74 6a je 0x94 * 2a: 66 f7 47 22 f0 ff testw $0xfff0,0x22(%rdi) <-- trapping instruction 30: 74 5a je 0x8c 32: 48 8b 46 08 mov 0x8(%rsi),%rax 36: 48 89 f7 mov %rsi,%rdi 39: 48 85 c0 test %rax,%rax 3c: 74 42 je 0x80 3e: 8b .byte 0x8b 3f: 15 .byte 0x15