FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: udp4_lib_lookup2+0x7ea/0x7f0 net/ipv4/udp.c:455 CPU: 1 PID: 20340 Comm: syz-executor0 Not tainted 4.20.0+ #396 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: CPU: 0 PID: 20351 Comm: syz-executor5 Not tainted 4.20.0+ #396 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+0x1d3/0x2c6 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1603 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3365 [inline] kmem_cache_alloc+0x2c4/0x730 mm/slab.c:3539 getname_flags+0xd0/0x590 fs/namei.c:140 getname+0x19/0x20 fs/namei.c:211 do_sys_open+0x383/0x780 fs/open.c:1057 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb774b6bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb774b6bc90 RCX: 0000000000457ec9 RDX: 0000000000004000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb774b6c6d4 R13: 00000000004c406b R14: 00000000004d6fa8 R15: 0000000000000005 Kernel Offset: disabled Rebooting in 86400 seconds..