syzbot

binder: 16848:16864 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0
BUG:--------[ cut here ]------------
caller is __this_cpu_preempt_check+0x[   84.465649] WARNING: CPU: 1 PID: 16887 at lib/vsprintf.c:[   84.471006] CPU: 0 PID: 16898 Comm: syz-executor3 Not tainted 4.9.73-gf3f3457 #1
precision 65177 too largeyz-executor3 Not tainted 4.9.73-gf3f3457 #1
precision 65177 too large[   84.490259]  ffff8801cf92f6d8ogle Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cf92f6d8[ [     848.4.50520244885]5]    ffffffffffffffff8811d9d29222bb99t syncing: panic_on_warn set ...

 ffffffff83f444c0 ffff8801cfd20000 0000000000000003 ffff8801cf92f718
 ffffffff81df9294 ffff8801cf92f730 ffffffff83f444c0 dffffc0000000000
Call Trace:
 [<ffffffff81d922b9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d922b9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df9294>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df92fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f9388>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f9388>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff833657a0>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d7a77>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d81da>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83571d39>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83571d39>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835697de>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356b089>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed4baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed4baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed67a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed87d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed88bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed88bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838af585>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 1 PID: 16887 Comm: syz-executor2 Not tainted 4.9.73-gf3f3457 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b511f728 ffffffff81d922b9 ffffffff83a46d00 ffff8801b511f800
 ffffffff83c0f800 ffffffff81db35b4 0000000000000009 ffff8801b511f7f0
 ffffffff8142d741 0000000041b58ab3 ffffffff84189000 ffffffff8142d585
Call Trace:
 [<ffffffff81d922b9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d922b9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142d741>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff8112f404>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff8112f4e4>] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565
 [<ffffffff81db35b4>] set_precision+0x144/0x170 lib/vsprintf.c:1941
 [<ffffffff81dbd32e>] vsnprintf+0x8ae/0x16d0 lib/vsprintf.c:2017
 [<ffffffff81dbe17d>] vscnprintf+0x2d/0x60 lib/vsprintf.c:2147
 [<ffffffff81267251>] vprintk_emit+0xf1/0x750 kernel/printk/printk.c:1847
 [<ffffffff812678d8>] vprintk+0x28/0x30 kernel/printk/printk.c:1913
 [<ffffffff812678fd>] vprintk_default+0x1d/0x30 kernel/printk/printk.c:1914
 [<ffffffff8142e45c>] vprintk_func kernel/printk/internal.h:36 [inline]
 [<ffffffff8142e45c>] printk+0xb7/0xe2 kernel/printk/printk.c:1975
 [<ffffffff83891cd3>] dns_resolver_preparse+0x743/0x810 net/dns_resolver/dns_key.c:130
 [<ffffffff81bb34be>] key_create_or_update+0x35e/0xa60 security/keys/key.c:855
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81bb8291>] SYSC_add_key security/keys/keyctl.c:125 [inline]
 [<ffffffff81bb8291>] SyS_add_key+0x1b1/0x390 security/keys/keyctl.c:60
 [<ffffffff838af585>] entry_SYSCALL_64_fastpath+0x23/0xc6
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..