INFO: task syz-executor.2:13305 blocked for more than 143 seconds. Tainted: G W 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28376 pid:13305 ppid: 22794 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 __unix_dgram_recvmsg+0x226/0xb60 net/unix/af_unix.c:2119 unix_dgram_bpf_recvmsg+0x630/0xd10 net/unix/unix_bpf.c:71 unix_dgram_recvmsg net/unix/af_unix.c:2215 [inline] unix_seqpacket_recvmsg+0xed/0x150 net/unix/af_unix.c:2088 sock_recvmsg_nosec net/socket.c:943 [inline] sock_recvmsg net/socket.c:961 [inline] sock_recvmsg net/socket.c:957 [inline] ____sys_recvmsg+0x2c4/0x600 net/socket.c:2611 ___sys_recvmsg+0x127/0x200 net/socket.c:2653 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2683 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: 0033:0x4665e9 RSP: 002b:00007f94fdf12188 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe90759abf R14: 00007f94fdf12300 R15: 0000000000022000 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 1638 Comm: khungtaskd Tainted: G W 5.14.0-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+0xcd/0x134 lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 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+0xd0a/0xfc0 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 kernel/kthread.c:319 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: 87 Comm: kworker/u4:2 Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy290 ieee80211_iface_work RIP: 0010:ieee80211_bss_info_update+0xc3/0xb70 net/mac80211/scan.c:149 Code: 03 42 0f b6 14 20 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 c1 09 00 00 45 0f b7 26 bf 80 00 00 00 41 bf 01 00 00 00 <66> 41 81 e4 fc 00 44 89 e6 e8 df 37 fa f8 66 41 81 fc 80 00 74 1e RSP: 0018:ffffc9000115f320 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff88807bb172a8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff887b5853 RDI: 0000000000000080 RBP: ffff888066138d20 R08: ffff88806613b490 R09: 0000000000000000 R10: ffffffff887daab3 R11: 0000000000086088 R12: 0000000000000080 R13: ffff88807bb172a8 R14: ffff88805b2fb850 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f06a5a44028 CR3: 000000000b68e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline] ieee80211_rx_mgmt_probe_beacon+0xcc6/0x17c0 net/mac80211/ibss.c:1615 ieee80211_ibss_rx_queued_mgmt+0xd30/0x1610 net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1426 [inline] ieee80211_iface_work+0x7f7/0xa40 net/mac80211/iface.c:1462 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295