netlink: 'syz-executor0': attribute type 16 has an invalid length.
netlink: 'syz-executor0': attribute type 16 has an invalid length.
kernel msg: ebtables bug: please report to author: Wrong nr. of counters requested
INFO: task syz-executor1:8813 blocked for more than 140 seconds.
Not tainted 5.0.0-rc5 #60
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor1 D28048 8813 5009 0x80000006
Call Trace:
context_switch kernel/sched/core.c:2844 [inline]
__schedule+0x817/0x1cc0 kernel/sched/core.c:3485
schedule+0x92/0x180 kernel/sched/core.c:3529
exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline]
_synchronize_rcu_expedited.constprop.0+0x4d4/0x530 kernel/rcu/tree_exp.h:622
synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:762
synchronize_net+0x3b/0x60 net/core/dev.c:9165
__tun_detach+0x3c6/0x1000 drivers/net/tun.c:711
tun_detach drivers/net/tun.c:744 [inline]
tun_chr_close+0xe0/0x180 drivers/net/tun.c:3436
__fput+0x2df/0x8d0 fs/file_table.c:278
____fput+0x16/0x20 fs/file_table.c:309
task_work_run+0x14a/0x1c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x92c/0x2fd0 kernel/exit.c:875
do_group_exit+0x135/0x370 kernel/exit.c:979
get_signal+0x766/0x1750 kernel/signal.c:2517
do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816
exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e39
Code: Bad RIP value.
RSP: 002b:00007f521bf7fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000073bf08 RCX: 0000000000457e39
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bf08
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bf0c
R13: 00007ffd210c626f R14: 00007f521bf809c0 R15: 000000000073bf0c
Showing all locks held in the system:
1 lock held by khungtaskd/1040:
#0: 00000000401ad2e3 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389
2 locks held by getty/7881:
#0: 0000000064fc1094 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000c15df8bc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7882:
#0: 000000003266d8ee (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000004c71f63e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7883:
#0: 00000000d78c8491 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000b1fd08e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7884:
#0: 00000000e8614574 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000811c9841 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7885:
#0: 000000000f3c24e6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000c7b0de43 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7886:
#0: 000000002d047a88 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000ba1f59a3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7887:
#0: 00000000b9fb42d6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000c388caec (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
3 locks held by kworker/0:4/7990:
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
#0: 0000000031aa1216 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144
#1: 00000000b72b842f ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148
#2: 00000000774fb32d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
1 lock held by syz-executor1/8813:
#0: 00000000774fb32d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
1 lock held by syz-executor1/8907:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc5 #60
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+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x9df/0xee0 kernel/hung_task.c:287
kthread+0x357/0x430 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7893 Comm: kworker/u4:2 Not tainted 5.0.0-rc5 #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline]
RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:22 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs+0x6f/0xb0 kernel/rcu/tree.c:305
Code: 4c 8d a3 b8 00 00 00 4c 89 e7 e8 ac 9c 48 00 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 4c 89 e0 83 e0 07 <83> c0 03 38 d0 7c 04 84 d2 75 17 8b 83 b8 00 00 00 48 83 c4 08 5b
RSP: 0018:ffff888056247ca8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880ae82ddc0 RCX: ffffffff815e1364
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880ae82de78
RBP: ffff888056247cc0 R08: 1ffff11015d05bcf R09: ffffed1015d05bd0
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff8880ae82de78
R13: 0000000000000353 R14: ffff88808428ac18 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c42017a000 CR3: 0000000074fcf000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:932
rcu_read_lock include/linux/rcupdate.h:608 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline]
batadv_nc_worker+0x4cd/0x760 net/batman-adv/network-coding.c:730
process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
worker_thread+0x98/0xe40 kernel/workqueue.c:2319
kthread+0x357/0x430 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352