netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'.
INFO: task syz-executor.1:13119 blocked for more than 140 seconds.
      Not tainted 4.14.198-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28624 13119  30213 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2808 [inline]
 __schedule+0x88b/0x1de0 kernel/sched/core.c:3384
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1731
 do_wait_for_common kernel/sched/completion.c:91 [inline]
 __wait_for_common kernel/sched/completion.c:112 [inline]
 wait_for_common+0x272/0x430 kernel/sched/completion.c:123
 ucma_close+0xfc/0x340 drivers/infiniband/core/ucma.c:1749
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4177b1
RSP: 002b:00007fff3c887fc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004177b1
RDX: 0000000000000001 RSI: 0000000000000080 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff3c8880a0 R11: 0000000000000293 R12: ffffffffffffffff
R13: 00000000001be4cb R14: 00000000000003e8 R15: 000000000118bfd4

Showing all locks held in the system:
1 lock held by khungtaskd/1068:
 #0:  (tasklist_lock){.+.+}, at: [<ffffffff814777f4>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1068 Comm: khungtaskd Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
 watchdog+0x5b9/0xb40 kernel/hung_task.c:274
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25060 Comm: kworker/u4:5 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy11 ieee80211_iface_work
task: ffff8880a5baa100 task.stack: ffff88806a6a8000
RIP: 0010:sta_info_get+0x2/0x270 net/mac80211/sta_info.c:169
RSP: 0018:ffff88806a6af7e0 EFLAGS: 00000297
RAX: ffff8880941437da RBX: ffff88808a879ba0 RCX: 1ffffffff0f3a9ad
RDX: 0000000000000000 RSI: ffff8880941437da RDI: ffff8880878e5dc0
RBP: ffff88806a6afaf0 R08: 0000000000000000 R09: 0000000000020012
R10: ffff8880a5baaa00 R11: ffff8880a5baa100 R12: ffff8880878e5dc0
R13: ffff88808fc52e68 R14: 0000000000000000 R15: ffff8880941437d0
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f412fbf5000 CR3: 000000008d62c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee80211_update_sta_info net/mac80211/ibss.c:1011 [inline]
 ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline]
 ieee80211_rx_mgmt_probe_beacon+0x46b/0x1450 net/mac80211/ibss.c:1607
 ieee80211_ibss_rx_queued_mgmt+0xc0c/0x1680 net/mac80211/ibss.c:1634
 ieee80211_iface_work+0x40c/0x770 net/mac80211/iface.c:1362
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: ff ff e8 e2 b2 81 fb e9 e6 fe ff ff e8 f8 b1 81 fb e9 3b ff ff ff e8 5e b2 81 fb e9 fe fe ff ff e8 c4 b2 81 fb eb ab 66 90 41 55 <41> 54 49 89 f4 55 48 89 fd 53 e8 6f df 57 fb 48 8d bd 28 05 00