wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) INFO: task syz-executor.3:23948 blocked for more than 140 seconds. Not tainted 4.19.185-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28104 23948 20189 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_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 flush_workqueue+0x40b/0x13e0 kernel/workqueue.c:2712 nbd_start_device_ioctl drivers/block/nbd.c:1276 [inline] __nbd_ioctl drivers/block/nbd.c:1347 [inline] nbd_ioctl+0x75b/0xbe0 drivers/block/nbd.c:1387 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601 block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: Bad RIP value. RSP: 002b:00007fbb6c1bc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffecf369a1f R14: 00007fbb6c1bc300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 00000000b403655c (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 3 locks held by kworker/u4:5/3567: #0: 000000001bd8c204 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9701 [inline] #0: 000000001bd8c204 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6840 #1: 00000000b403655c (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:921 [inline] #1: 00000000b403655c (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 #2: 00000000b403655c (rcu_read_lock){....}, at: batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:417 [inline] #2: 00000000b403655c (rcu_read_lock){....}, at: batadv_nc_worker+0xf3/0xd50 net/batman-adv/network-coding.c:730 3 locks held by kworker/u5:1/8137: #0: 000000001779c426 ((wq_completion)"knbd%d-recv"nbd->index){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123 #1: 000000008d5b4f93 ((work_completion)(&args->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127 #2: 0000000077567b26 (sk_lock-AF_AX25){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #2: 0000000077567b26 (sk_lock-AF_AX25){+.+.}, at: ax25_recvmsg+0xbb/0x810 net/ax25/af_ax25.c:1629 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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: 4692 Comm: systemd-journal Not tainted 4.19.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:deref_stack_reg+0x180/0x1d0 arch/x86/kernel/unwind_orc.c:336 Code: 48 ba 00 00 00 00 00 fc ff df 48 c7 04 13 00 00 00 00 48 8b 4c 24 60 65 48 2b 0c 25 28 00 00 00 75 47 48 83 c4 68 5b 5d 41 5c <41> 5d 41 5e c3 e8 66 9d 6e 00 e9 ec fe ff ff e8 ec 9d 6e 00 e9 2f RSP: 0018:ffff8880a0f17990 EFLAGS: 00000286 RAX: 0000000000000001 RBX: 1ffff110141e2f3e RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff8880a0f17938 RDI: ffff8880a0f17e38 RBP: 0000000000000001 R08: ffffffff8b9afef0 R09: ffffffff8b9afeec R10: ffff8880a0f17b37 R11: 0000000000074071 R12: ffff8880a0f17b20 R13: ffff8880a0f17b20 R14: ffff8880a0f10000 R15: ffffffff8b9afeec FS: 00007efddf9298c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efddc7d2020 CR3: 00000000a0e6e000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 getname_flags+0xce/0x590 fs/namei.c:140 user_path_at_empty+0x2a/0x50 fs/namei.c:2609 user_path_at include/linux/namei.h:57 [inline] do_faccessat+0x248/0x7a0 fs/open.c:397 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7efddebe49c7 Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffc071218f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007ffc07124920 RCX: 00007efddebe49c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000056361ebbe9a3 RBP: 00007ffc07121a40 R08: 000056361ebb43e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 000056361f2488a0 R15: 00007ffc07121f30