device veth0_vlan left promiscuous mode Bluetooth: hci2: command 0x0409 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 Bluetooth: hci2: command 0x041b tx timeout INFO: task syz-executor.4:14449 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.4 D29520 14449 14181 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] chown_common+0x2d0/0x550 fs/open.c:648 do_fchownat+0x126/0x1e0 fs/open.c:681 __do_sys_chown fs/open.c:701 [inline] __se_sys_chown fs/open.c:699 [inline] __x64_sys_chown+0x77/0xb0 fs/open.c:699 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd437c770c9 Code: Bad RIP value. RSP: 002b:00007fd436144168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c RAX: ffffffffffffffda RBX: 00007fd437d97390 RCX: 00007fd437c770c9 RDX: 000000000000ee00 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007fd437cd2ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff33fe3a5f R14: 00007fd436144300 R15: 0000000000022000 Showing all locks held in the system: 4 locks held by kworker/u4:3/1317: 1 lock held by khungtaskd/1565: #0: 000000009b492327 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7756: #0: 00000000b32a4b56 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/0:42/21655: #0: 00000000246b46c6 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000001708b970 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000002266119d (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 3 locks held by kworker/0:43/21657: #0: 00000000246b46c6 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000477cdb17 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000002266119d (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 2 locks held by syz-executor.4/14016: #0: 00000000baa59c9e (sb_writers#30){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000baa59c9e (sb_writers#30){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000005af123a8 (&sb->s_type->i_mutex_key#36){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000005af123a8 (&sb->s_type->i_mutex_key#36){++++}, at: chown_common+0x2d0/0x550 fs/open.c:648 2 locks held by syz-executor.4/14442: #0: 00000000cbeb5073 (sb_writers#30){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000cbeb5073 (sb_writers#30){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000002334c25b (&sb->s_type->i_mutex_key#36){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000002334c25b (&sb->s_type->i_mutex_key#36){++++}, at: chown_common+0x2d0/0x550 fs/open.c:648 2 locks held by syz-executor.4/14449: #0: 00000000cbeb5073 (sb_writers#30){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000cbeb5073 (sb_writers#30){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000002334c25b (&sb->s_type->i_mutex_key#36){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000002334c25b (&sb->s_type->i_mutex_key#36){++++}, at: chown_common+0x2d0/0x550 fs/open.c:648 1 lock held by syz-executor.0/23865: #0: 000000002266119d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000002266119d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1565 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1317 Comm: kworker/u4:3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: netns cleanup_net RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 <65> 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 RSP: 0018:ffff8880b32b7648 EFLAGS: 00000082 RAX: 0000000000000286 RBX: ffff88809f70d0e0 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff8167ad6d RDI: ffff8880b59c3e40 RBP: ffff8880b59c3e40 R08: 0000000000000000 R09: fffffbfff140e0fc R10: ffffffff8a0707e3 R11: 0000000000000000 R12: 0000000000000286 R13: ffff88809f70d380 R14: ffff88809f70d110 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f899d22f000 CR3: 00000000a1213000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_off+0xd/0x200 kernel/trace/trace_preemptirq.c:36 kmem_cache_free+0x56/0x260 mm/slab.c:3761 kernfs_put.part.0+0x1f8/0x590 fs/kernfs/dir.c:544 kernfs_put+0x42/0x50 fs/kernfs/dir.c:515 __kernfs_remove+0x6fe/0xa80 fs/kernfs/dir.c:1338 kernfs_remove_by_name_ns+0x51/0xb0 fs/kernfs/dir.c:1510 kernfs_remove_by_name include/linux/kernfs.h:539 [inline] sysfs_unmerge_group+0xe3/0x160 fs/sysfs/group.c:343 rpm_sysfs_remove drivers/base/power/sysfs.c:725 [inline] dpm_sysfs_remove+0x36/0x60 drivers/base/power/sysfs.c:732 device_del+0x129/0xaf0 drivers/base/core.c:2319 rollback_registered_many+0x661/0xe70 net/core/dev.c:8220 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324 unregister_netdevice_many net/core/dev.c:9323 [inline] default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9795 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415