INFO: task syz-executor.2:17045 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.2 D28592 17045 8138 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: 0033:0x7f1489f550f9
Code: Bad RIP value.
RSP: 002b:00007f14884c7168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f148a074f80 RCX: 00007f1489f550f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f1489fb0ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe1f52bd2f R14: 00007f14884c7300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1570:
#0: 000000000f46210a (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7806:
#0: 000000007dac5a05 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by syz-executor.4/442:
3 locks held by kworker/u4:6/10025:
1 lock held by syz-executor.2/17045:
#0: 00000000f8b1d1e4 (&type->s_umount_key#52){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631
3 locks held by syz-executor.5/20351:
6 locks held by syz-executor.1/20363:
5 locks held by syz-executor.3/20369:
1 lock held by syz-executor.0/20381:
1 lock held by syz-executor.2/20382:
#0: 000000004328eed7 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x152/0x200 mm/util.c:355
1 lock held by syz-executor.2/20384:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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: 20363 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:784 [inline]
RIP: 0010:__lock_acquire+0x139/0x3ff0 kernel/locking/lockdep.c:3292
Code: 85 b7 0d 00 00 44 8b 05 65 3e d9 0b 45 85 c0 75 3d 48 c7 c0 80 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 <0f> 85 9a 2b 00 00 48 83 3d 59 89 a6 08 00 0f 84 a7 0e 00 00 9c 58
RSP: 0018:ffff8880ba107ab8 EFLAGS: 00000046
RAX: 1ffffffff13e3050 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8d3b1120
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000001
R13: ffff8880568204c0 R14: ffffffff8d3b1120 R15: 0000000000000001
FS: 00007f9daae9a700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffb90730718 CR3: 00000000a0f90000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152
debug_object_deactivate lib/debugobjects.c:540 [inline]
debug_object_deactivate+0xfc/0x2e0 lib/debugobjects.c:529
debug_hrtimer_deactivate kernel/time/hrtimer.c:421 [inline]
debug_deactivate kernel/time/hrtimer.c:471 [inline]
__run_hrtimer kernel/time/hrtimer.c:1435 [inline]
__hrtimer_run_queues+0x1bc/0xe60 kernel/time/hrtimer.c:1527
hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:batadv_hardif_get_by_netdev+0x14b/0x3e0 net/batman-adv/hard-interface.c:83
Code: 0f 85 7b 02 00 00 4d 8b 3f 49 81 ff 60 8c db 8d 0f 84 af 01 00 00 e8 34 b9 8a f9 49 8d 7f 20 48 89 f8 48 c1 e8 03 80 3c 18 00 <0f> 85 5e 02 00 00 49 39 6f 20 75 ba e8 14 b9 8a f9 4d 8d 6f 30 be
RSP: 0018:ffff88805f3075f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1101250ff64 RBX: dffffc0000000000 RCX: ffffc90005d1e000
RDX: 0000000000040000 RSI: ffffffff87d7cc3c RDI: ffff88809287fb20
RBP: ffff88805346a980 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88805346a980
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809287fb00
batadv_hard_if_event+0xaf/0x15c0 net/batman-adv/hard-interface.c:1035
notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
call_netdevice_notifiers net/core/dev.c:1762 [inline]
register_netdevice+0x841/0x10f0 net/core/dev.c:8725
__ip_tunnel_create+0x398/0x580 net/ipv4/ip_tunnel.c:280
ip_tunnel_init_net+0x330/0x990 net/ipv4/ip_tunnel.c:1035
ops_init+0xb3/0x410 net/core/net_namespace.c:129
setup_net+0x2c2/0x720 net/core/net_namespace.c:316
copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439
create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107
copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165
copy_process.part.0+0x3a59/0x8260 kernel/fork.c:1916
copy_process kernel/fork.c:1710 [inline]
_do_fork+0x22f/0xf30 kernel/fork.c:2219
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f9dac9280f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9daae9a118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f9daca47f80 RCX: 00007f9dac9280f9
RDX: 0000000000000000 RSI: 0000000020000f80 RDI: 0000000065d44200
RBP: 00007f9dac983ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffe9e06556f R14: 00007f9daae9a300 R15: 0000000000022000