name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 13726 Comm: syz-executor0 Not tainted 4.19.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
==================================================================
BUG: KMSAN: uninit-value in show_trace_log_lvl+0x53f/0x11e0 arch/x86/kernel/dumpstack.c:212
CPU: 0 PID: 13726 Comm: syz-executor0 Not tainted 4.19.0+ #82
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+0x419/0x480 lib/dump_stack.c:113
 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911
 __msan_warning+0x76/0xd0 mm/kmsan/kmsan_instr.c:415
 show_trace_log_lvl+0x53f/0x11e0 arch/x86/kernel/dumpstack.c:212
 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x32d/0x480 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x11e5/0x13c0 lib/fault-inject.c:149
 __should_failslab+0x278/0x2a0 mm/failslab.c:32
 should_failslab+0x29/0x70 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc_node mm/slub.c:2653 [inline]
 kmem_cache_alloc_node+0x164/0xec0 mm/slub.c:2769
 __alloc_skb+0x32e/0xeb0 net/core/skbuff.c:194
 alloc_skb include/linux/skbuff.h:996 [inline]
 dccp_send_close+0x108/0x6c0 net/dccp/output.c:677
 dccp_terminate_connection net/dccp/proto.c:987 [inline]
 dccp_close+0x1940/0x1e60 net/dccp/proto.c:1050
 inet_release+0x26e/0x2e0 net/ipv4/af_inet.c:428
 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:457
 __sock_release net/socket.c:579 [inline]
 sock_close+0x13f/0x400 net/socket.c:1141
 __fput+0x4e5/0xe00 fs/file_table.c:278
 ____fput+0x37/0x40 fs/file_table.c:309
 task_work_run+0x48e/0x520 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
 prepare_exit_to_usermode+0x3b4/0x4d0 arch/x86/entry/common.c:197
 syscall_return_slowpath+0x123/0x8c0 arch/x86/entry/common.c:268
 do_syscall_64+0xf5/0x110 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457569
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0b76a37c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000124
RAX: 0000000000000004 RBX: 00007f0b76a37c90 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0b76a386d4
R13: 00000000004bdb4c R14: 00000000004cca48 R15: 0000000000000006

Local variable description: ----state@show_trace_log_lvl
Variable was created at:
 show_trace_log_lvl+0xb3/0x11e0 arch/x86/kernel/dumpstack.c:164
 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293
==================================================================