audit: type=1804 audit(1668874522.851:367): pid=8419 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir839099116/syzkaller.tPXhuj/102/bus" dev="sda1" ino=14596 res=1 ceph: No mds server is up or the cluster is laggy INFO: task syz-executor.5:1769 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29648 1769 8130 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 pipe_lock_nested fs/pipe.c:77 [inline] pipe_lock fs/pipe.c:85 [inline] pipe_wait+0x1bd/0x1e0 fs/pipe.c:133 pipe_write+0x5c3/0xf80 fs/pipe.c:500 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fedd183f639 Code: Bad RIP value. RSP: 002b:00007fedcfd4f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fedd19601f0 RCX: 00007fedd183f639 RDX: 00000000fffffecc RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007fedd189aae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff037747ef R14: 00007fedcfd4f300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/u4:2/123: 1 lock held by khungtaskd/1569: #0: 00000000b9829264 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7847: #0: 0000000086d943ee (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 audit: type=1804 audit(1668874523.971:368): pid=8441 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir839099116/syzkaller.tPXhuj/103/bus" dev="sda1" ino=14597 res=1 4 locks held by syz-executor.1/8152: 3 locks held by kworker/u4:12/24114: IPVS: ftp: loaded support on port[0] = 21 #0: 0000000062a85cbb ((wq_completion)"%s"wiphy_name(local->hw.wiphy)){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000080859598 ((work_completion)(&sdata->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001d21f709 (&wdev->mtx){+.+.}, at: sdata_lock net/mac80211/ieee80211_i.h:977 [inline] #2: 000000001d21f709 (&wdev->mtx){+.+.}, at: ieee80211_ibss_rx_queued_mgmt+0xe9/0x18b0 net/mac80211/ibss.c:1623 2 locks held by kworker/1:6/24320: #0: 00000000414c4839 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000dddaf4a9 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by syz-executor.5/1767: audit: type=1804 audit(1668874524.251:369): pid=8478 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir839099116/syzkaller.tPXhuj/104/bus" dev="sda1" ino=14597 res=1 1 lock held by syz-executor.5/1769: #0: 00000000ce56d791 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:77 [inline] #0: 00000000ce56d791 (&pipe->mutex/1){+.+.}, at: pipe_lock fs/pipe.c:85 [inline] #0: 00000000ce56d791 (&pipe->mutex/1){+.+.}, at: pipe_wait+0x1bd/0x1e0 fs/pipe.c:133 4 locks held by syz-executor.4/8439: #0: 0000000057ce3813 (rtnl_mutex){+.+.}, at: wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline] #0: 0000000057ce3813 (rtnl_mutex){+.+.}, at: wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline] #0: 0000000057ce3813 (rtnl_mutex){+.+.}, at: wext_handle_ioctl+0x248/0x280 net/wireless/wext-core.c:1049 #1: 000000001d21f709 (&wdev->mtx){+.+.}, at: wdev_lock net/wireless/core.h:193 [inline] #1: 000000001d21f709 (&wdev->mtx){+.+.}, at: cfg80211_ibss_wext_siwessid+0x14e/0x3b0 net/wireless/ibss.c:404 #2: 000000003951b304 (&local->sta_mtx){+.+.}, at: __sta_info_flush+0x166/0x540 net/mac80211/sta_info.c:1140 #3: 00000000b2fdeea7 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #3: 00000000b2fdeea7 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 2 locks held by syz-executor.4/8445: #0: 00000000247ac67e (pernet_ops_rwsem){++++}, at: copy_net_ns+0x1d8/0x340 net/core/net_namespace.c:435 #1: 0000000057ce3813 (rtnl_mutex){+.+.}, at: register_netdev+0x11/0x50 net/core/dev.c:8857 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8505 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:do_dentry_open+0xc44/0x1160 fs/open.c:795 Code: 04 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 53 28 48 8d 7a 68 48 89 fe 48 c1 ee 03 80 3c 0e 00 0f 85 b0 04 00 00 48 8b 4a 68 <48> 85 c9 48 89 4c 24 18 0f 84 a3 f8 ff ff e9 41 f8 ff ff 4c 89 44 RSP: 0018:ffff888046357a90 EFLAGS: 00000246 RAX: 000000000011801f RBX: ffff8880aa7f5580 RCX: 0000000000000000 RDX: ffffffff8871e720 RSI: 1ffffffff10e3cf1 RDI: ffffffff8871e788 RBP: ffff8880ab58e630 R08: ffff8880ab58e630 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880aa7f55fc R13: ffff8880aa7f5590 R14: 0000000000000000 R15: ffff8880aa7f55a8 FS: 00007efdd42b48c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0429ff000 CR3: 00000000a18f4000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7efdd31266f0 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 RSP: 002b:00007ffc72930e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efdd31266f0 RDX: 0000000000000180 RSI: 00000000000800c2 RDI: 000055fc2237d9f0 RBP: 000000000003a2f8 R08: 000000000000fefe R09: 0000000000000030 R10: 0000000000000000 R11: 0000000000000246 R12: 000055fc2237da05 R13: 8421084210842109 R14: 00000000000800c2 R15: 00007efdd31b4540