device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge)
INFO: task syz-executor.0:11299 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.0  D29920 11299   8133 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_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
 rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309
 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94
 __down_read arch/x86/include/asm/rwsem.h:83 [inline]
 down_read+0x44/0x80 kernel/locking/rwsem.c:26
 iterate_supers+0xdb/0x290 fs/super.c:631
 ksys_sync+0x86/0x150 fs/sync.c:113
 __ia32_sys_sync+0xa/0x10 fs/sync.c:124
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fbff91840c9
Code: Bad RIP value.
RSP: 002b:00007fbff76f6168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbff92a3f80 RCX: 00007fbff91840c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fbff91dfae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc94ebad4f R14: 00007fbff76f6300 R15: 0000000000022000

Showing all locks held in the system:
3 locks held by kworker/1:0/19:
 #0: 00000000ec0fcd47 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000d6f079d6 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000007852bf00 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150
1 lock held by khungtaskd/1571:
 #0: 00000000fd02c840 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7816:
 #0: 00000000e5714af5 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by kworker/u4:11/15718:
4 locks held by kworker/u4:12/15940:
1 lock held by syz-executor.4/10900:
 #0: 00000000a3c24828 (&type->s_umount_key#91/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
 #0: 00000000a3c24828 (&type->s_umount_key#91/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519
3 locks held by kworker/1:1/11208:
 #0: 00000000ec0fcd47 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000e43c42f9 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000007852bf00 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236
1 lock held by syz-executor.4/11266:
 #0: 0000000017ba824e (&type->s_umount_key#91/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
 #0: 0000000017ba824e (&type->s_umount_key#91/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519
1 lock held by syz-executor.0/11299:
 #0: 00000000a3c24828 (&type->s_umount_key#92){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631
1 lock held by syz-executor.4/11592:
 #0: 000000004a427613 (&type->s_umount_key#91/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
 #0: 000000004a427613 (&type->s_umount_key#91/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519
2 locks held by syz-executor.5/12460:
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline]
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: do_sendfile+0x97d/0xc30 fs/read_write.c:1446
 #1: 00000000a3c24828 (&type->s_umount_key#92){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631
2 locks held by syz-executor.0/12462:
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline]
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: do_sendfile+0x97d/0xc30 fs/read_write.c:1446
 #1: 00000000a3c24828 (&type->s_umount_key#92){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631
2 locks held by syz-executor.0/13207:
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline]
 #0: 0000000097e917fa (sb_writers#4){.+.+}, at: do_sendfile+0x97d/0xc30 fs/read_write.c:1446
 #1: 00000000a3c24828 (&type->s_umount_key#92){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631

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

NMI backtrace for cpu 0
CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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: 15718 Comm: kworker/u4:11 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x1ef/0x3ff0 kernel/locking/lockdep.c:3295
Code: 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 <0f> 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff ff 83 fe 01
RSP: 0018:ffff888040dff9e8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff11009350545 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88809bae6140 R14: ffff888049a82a28 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbffc905000 CR3: 00000000b322e000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 batadv_nc_purge_paths+0xdc/0x310 net/batman-adv/network-coding.c:453
 batadv_nc_worker+0x731/0xd50 net/batman-adv/network-coding.c:733
 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