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BUG: KMSAN: uninit-value in update_stack_state+0x1ee/0xb40 arch/x86/kernel/unwind_frame.c:202
CPU: 1 PID: 15404 Comm: syz-executor.4 Not tainted 5.8.0-rc5-syzkaller #0
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+0x1df/0x240 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
update_stack_state+0x1ee/0xb40 arch/x86/kernel/unwind_frame.c:202
unwind_next_frame+0x8c6/0xed0 arch/x86/kernel/unwind_frame.c:305
arch_stack_walk+0x33e/0x3e0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:123
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310
kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
__msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
sctp_init_addrs+0x91/0xf0 net/sctp/sm_make_chunk.c:1364
sctp_rcv+0x443e/0x5410 net/sctp/input.c:222
ip_protocol_deliver_rcu+0x700/0xbc0 net/ipv4/ip_input.c:204
ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip_local_deliver+0x62a/0x7c0 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish net/ipv4/ip_input.c:428 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip_rcv+0x6cf/0x750 net/ipv4/ip_input.c:539
__netif_receive_skb_one_core net/core/dev.c:5281 [inline]
__netif_receive_skb net/core/dev.c:5395 [inline]
process_backlog+0xfb5/0x14e0 net/core/dev.c:6239
napi_poll net/core/dev.c:6684 [inline]
net_rx_action+0x746/0x1aa0 net/core/dev.c:6752
__do_softirq+0x311/0x83d kernel/softirq.c:293
asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711
__run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline]
do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:390 [inline]
__irq_exit_rcu+0x226/0x270 kernel/softirq.c:420
irq_exit_rcu+0xe/0x10 kernel/softirq.c:432
sysvec_call_function_single+0x107/0x130 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:601
RIP: 0010:vmalloc_meta mm/kmsan/kmsan_shadow.c:100 [inline]
RIP: 0010:kmsan_get_metadata+0x6b/0x180 mm/kmsan/kmsan_shadow.c:188
Code: 0f 85 28 01 00 00 48 89 df e8 d1 e1 ff ff 84 c0 74 1d 41 0f b6 ce 48 c1 e1 2b 48 01 d9 48 b8 00 00 00 00 00 08 00 00 48 01 c8 f8 00 00 00 48 89 df e8 d8 e1 ff ff 84 c0 0f 84 e6 00 00 00 48
RSP: 0018:ffffa51193c22b00 EFLAGS: 00000282
RAX: ffffad1193c22b70 RBX: ffffa51193c22b70 RCX: ffffa51193c22b70
RDX: ffffad117fffffff RSI: 0000000000000008 RDI: ffffa51193c22b70
RBP: ffffa51193c22b18 R08: 0000000000000002 R09: ffffad1193c22b70
R10: 0000000000000004 R11: 0000000000000000 R12: ffff8b375b8a09d8
R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000000
kmsan_get_shadow_origin_ptr+0x6c/0xb0 mm/kmsan/kmsan_shadow.c:149
__msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
arch_local_save_flags arch/x86/include/asm/irqflags.h:79 [inline]
arch_local_irq_save arch/x86/include/asm/irqflags.h:120 [inline]
do_softirq kernel/softirq.c:333 [inline]
__local_bh_enable_ip+0x107/0x1d0 kernel/softirq.c:190
local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32
rcu_read_unlock_bh include/linux/rcupdate.h:723 [inline]
ip_finish_output2+0x1fee/0x24a0 net/ipv4/ip_output.c:229
__ip_finish_output+0xaa7/0xd80 net/ipv4/ip_output.c:306
ip_finish_output+0x166/0x410 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip_output+0x593/0x680 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:443 [inline]
ip_local_out net/ipv4/ip_output.c:125 [inline]
__ip_queue_xmit+0x1b5c/0x21a0 net/ipv4/ip_output.c:530
sctp_v4_xmit+0x255/0x2f0 net/sctp/protocol.c:992
sctp_packet_transmit+0x3e6b/0x4380 net/sctp/output.c:629
sctp_outq_flush_transports net/sctp/outqueue.c:1147 [inline]
sctp_outq_flush+0x15e3/0x5ca0 net/sctp/outqueue.c:1195
sctp_outq_uncork+0xd0/0xf0 net/sctp/outqueue.c:758
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1799 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline]
sctp_do_sm+0x934c/0x9a60 net/sctp/sm_sideeffect.c:1156
sctp_assoc_bh_rcv+0x9ee/0xdb0 net/sctp/associola.c:1044
sctp_inq_push+0x306/0x430 net/sctp/inqueue.c:80
sctp_backlog_rcv+0x255/0x1250 net/sctp/input.c:344
sk_backlog_rcv include/net/sock.h:997 [inline]
__release_sock+0x2a3/0x5c0 net/core/sock.c:2550
release_sock+0x99/0x2a0 net/core/sock.c:3066
sctp_setsockopt+0x17ecb/0x18fd0 net/sctp/socket.c:4880
compat_sock_common_setsockopt+0x238/0x260 net/core/sock.c:3275
__compat_sys_setsockopt+0x4ed/0x910 net/compat.c:405
__do_compat_sys_setsockopt net/compat.c:415 [inline]
__se_compat_sys_setsockopt+0xdd/0x100 net/compat.c:412
__ia32_compat_sys_setsockopt+0x62/0x80 net/compat.c:412
do_syscall_32_irqs_on arch/x86/entry/common.c:430 [inline]
__do_fast_syscall_32+0x2aa/0x400 arch/x86/entry/common.c:477
do_fast_syscall_32+0x6b/0xd0 arch/x86/entry/common.c:505
do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:554
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fd2549
Code: Bad RIP value.
RSP: 002b:00000000f5d8b0cc EFLAGS: 00000296 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000084
RDX: 0000000000000009 RSI: 0000000020000300 RDI: 000000000000009c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Local variable ----_sch@nf_conntrack_sctp_packet created at:
nf_conntrack_sctp_packet+0x101/0x3030 net/netfilter/nf_conntrack_proto_sctp.c:368
nf_conntrack_sctp_packet+0x101/0x3030 net/netfilter/nf_conntrack_proto_sctp.c:368
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