------------[ cut here ]------------ mismatching kcsan_end_atomic() WARNING: CPU: 0 PID: 5538 at kernel/kcsan/core.c:264 kcsan_end_atomic kernel/kcsan/core.c:264 [inline] WARNING: CPU: 0 PID: 5538 at kernel/kcsan/core.c:264 kcsan_end_atomic+0x60/0xd0 kernel/kcsan/core.c:252 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 5538 Comm: syz-executor.5 Not tainted 5.3.0+ #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+0xf5/0x159 lib/dump_stack.c:113 panic+0x209/0x639 kernel/panic.c:219 __warn.cold+0x4c/0x4d kernel/panic.c:576 report_bug+0x1cf/0x1e0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xda/0x140 arch/x86/kernel/traps.c:272 do_invalid_op+0x43/0x60 arch/x86/kernel/traps.c:291 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:kcsan_end_atomic kernel/kcsan/core.c:264 [inline] RIP: 0010:kcsan_end_atomic+0x60/0xd0 kernel/kcsan/core.c:252 Code: 89 e5 74 77 65 ff 05 1f 90 af 7e 65 8b 05 b0 90 ae 7e a9 00 01 1f 00 75 77 e8 cc fe ff ff 48 c7 c7 70 34 60 85 e8 78 1c db ff <0f> 0b e8 09 ff ff ff 5d c3 a9 00 01 1f 00 75 14 65 48 8b 04 25 40 RSP: 0018:ffffc900045e75d0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880adf94c00 RCX: ffffc90012dc8000 RDX: 0000000000008297 RSI: ffffffff81388b3d RDI: 0000000000000006 RBP: ffffc900045e75d0 R08: ffff888124b54000 R09: 000000000000001e R10: 0000000038333535 R11: 0000000033353554 R12: 0000000000000022 R13: ffff8880ae55ce00 R14: ffff8880adf94cbc R15: ffffe8ffffc75880 raw_write_seqcount_end include/linux/seqlock.h:256 [inline] write_seqcount_end include/linux/seqlock.h:414 [inline] qdisc_run_end include/net/sch_generic.h:175 [inline] __dev_xmit_skb net/core/dev.c:3480 [inline] __dev_queue_xmit+0x175f/0x1b80 net/core/dev.c:3838 dev_queue_xmit+0x21/0x30 net/core/dev.c:3902 neigh_resolve_output net/core/neighbour.c:1490 [inline] neigh_resolve_output+0x44a/0x470 net/core/neighbour.c:1470 neigh_output include/net/neighbour.h:511 [inline] ip_finish_output2+0x4a9/0xe30 net/ipv4/ip_output.c:228 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x23a/0x490 net/ipv4/ip_output.c:290 ip_finish_output+0x41/0x160 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0xdf/0x210 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:436 [inline] ip_local_out+0x74/0x90 net/ipv4/ip_output.c:125 ip_send_skb+0x35/0xb0 net/ipv4/ip_output.c:1554 udp_send_skb.isra.0+0x3a6/0x890 net/ipv4/udp.c:887 udp_sendmsg+0x1541/0x18d0 net/ipv4/udp.c:1174 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 ___sys_sendmsg+0x2b7/0x5d0 net/socket.c:2311 __sys_sendmmsg+0x123/0x350 net/socket.c:2413 __do_sys_sendmmsg net/socket.c:2442 [inline] __se_sys_sendmmsg net/socket.c:2439 [inline] __x64_sys_sendmmsg+0x64/0x80 net/socket.c:2439 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x459a29 Code: fd 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe7ba59dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459a29 RDX: 0400000000000030 RSI: 0000000020007fc0 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe7ba59e6d4 R13: 00000000004c7213 R14: 00000000004dca18 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..