sock_common_setsockopt+0x136/0x170 net/core/sock.c:2975
sd 0:0:1:0: [sg0] tag#2049 CDB[80]: 00
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
==================================================================
BUG: KMSAN: uninit-value in show_trace_log_lvl+0xda4/0x1030 arch/x86/kernel/dumpstack.c:203
CPU: 1 PID: 7735 Comm: syz-executor6 Not tainted 4.16.0+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x14a/0x1d0 lib/dump_stack.c:53
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
 show_trace_log_lvl+0xda4/0x1030 arch/x86/kernel/dumpstack.c:203
 show_stack+0xfc/0x150 arch/x86/kernel/dumpstack.c:236
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 warn_alloc+0x3fc/0x660 mm/page_alloc.c:3319
 __vmalloc_node_range+0xa6f/0x1140 mm/vmalloc.c:1775
 __vmalloc_node mm/vmalloc.c:1804 [inline]
 __vmalloc_node_flags_caller+0x102/0x120 mm/vmalloc.c:1826
 kvmalloc_node+0x2a6/0x2e0 mm/util.c:428
 kvmalloc include/linux/mm.h:541 [inline]
 kvmalloc_array include/linux/mm.h:557 [inline]
 xt_alloc_entry_offsets+0x62/0x70 net/netfilter/x_tables.c:808
 translate_table+0x216/0x3870 net/ipv6/netfilter/ip6_tables.c:703
 do_replace net/ipv6/netfilter/ip6_tables.c:1164 [inline]
 do_ip6t_set_ctl+0x60c/0x930 net/ipv6/netfilter/ip6_tables.c:1690
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x476/0x4d0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x1e2/0x340 net/ipv6/ipv6_sockglue.c:927
 tcp_setsockopt+0x1bb/0x1f0 net/ipv4/tcp.c:2905
 sock_common_setsockopt+0x136/0x170 net/core/sock.c:2975
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455379
RSP: 002b:00007f0c93eddc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f0c93ede6d4 RCX: 0000000000455379
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020001fde R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000055f R14: 00000000006fb188 R15: 0000000000000000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
 update_stack_state+0x9e2/0xa40 arch/x86/kernel/unwind_frame.c:261
 unwind_next_frame+0x618/0xe50 arch/x86/kernel/unwind_frame.c:329
device bridge0 entered promiscuous mode
 show_trace_log_lvl+0xb49/0x1030 arch/x86/kernel/dumpstack.c:212
 show_stack+0xfc/0x150 arch/x86/kernel/dumpstack.c:236
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 warn_alloc+0x3fc/0x660 mm/page_alloc.c:3319
 __vmalloc_node_range+0xa6f/0x1140 mm/vmalloc.c:1775
 __vmalloc_node mm/vmalloc.c:1804 [inline]
 __vmalloc_node_flags_caller+0x102/0x120 mm/vmalloc.c:1826
 kvmalloc_node+0x2a6/0x2e0 mm/util.c:428
 kvmalloc include/linux/mm.h:541 [inline]
 kvmalloc_array include/linux/mm.h:557 [inline]
 xt_alloc_entry_offsets+0x62/0x70 net/netfilter/x_tables.c:808
 translate_table+0x216/0x3870 net/ipv6/netfilter/ip6_tables.c:703
 do_replace net/ipv6/netfilter/ip6_tables.c:1164 [inline]
 do_ip6t_set_ctl+0x60c/0x930 net/ipv6/netfilter/ip6_tables.c:1690
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x476/0x4d0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x1e2/0x340 net/ipv6/ipv6_sockglue.c:927
 tcp_setsockopt+0x1bb/0x1f0 net/ipv4/tcp.c:2905
 sock_common_setsockopt+0x136/0x170 net/core/sock.c:2975
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Local variable description: ----info.i.i@syscall_return_slowpath
Variable was created at:
 syscall_return_slowpath+0x6b/0x700 arch/x86/entry/common.c:247
 do_syscall_64+0x36d/0x430 arch/x86/entry/common.c:292
==================================================================