syzbot

RBP: 00007f1c92446328 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 00007f1c92446320
R13: 00007f1c9244632c R14: 00007fff013c1f00 R15: 00007fff013c1fe8
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz-executor542:2822]
Modules linked in:
CPU: 0 PID: 2822 Comm: syz-executor542 Not tainted 5.15.176-syzkaller-00972-g829d9f138569 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x34/0x90 kernel/kcov.c:293
Code: 8b 15 60 fd 91 7e 65 8b 05 61 fd 91 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 5c 0b 00 00 00 74 52 8b 82 38 0b 00 00 <83> f8 03 75 47 48 8b 8a 40 0b 00 00 44 8b 92 3c 0b 00 00 49 c1 e2
RSP: 0018:ffffc90003a66830 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff84cdc3aa
RDX: ffff888126672780 RSI: 0000000000000005 RDI: 0000000000000000
RBP: ffffc90003a66830 R08: ffffffff84cdc3e1 R09: ffffed10220e2511
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888110712800 R14: 00000000aa947d22 R15: ffffc90003a66c80
FS:  00007f1c9237c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000010b5b3000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __refcount_sub_and_test include/linux/refcount.h:282 [inline]
 __refcount_dec_and_test include/linux/refcount.h:315 [inline]
 refcount_dec_and_test include/linux/refcount.h:333 [inline]
 sock_put include/net/sock.h:1928 [inline]
 tipc_sk_rcv+0x1261/0x1b50 net/tipc/socket.c:2502
 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1783
 tipc_sk_rcv+0x1212/0x1b50 net/tipc/socket.c:2501
 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x4da/0x7b0 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv+0xad0/0x1750 net/tipc/socket.c:2158
 tipc_sk_filter_rcv+0x3152/0x3380 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x80c/0x1b50 net/tipc/socket.c:2497
 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1071 [inline]
 __release_sock+0x145/0x410 net/core/sock.c:2733
 release_sock net/core/sock.c:3284 [inline]
 sock_setsockopt+0x1831/0x2f30 net/core/sock.c:1383
 __sys_setsockopt+0x423/0x840 net/socket.c:2199
 __do_sys_setsockopt net/socket.c:2214 [inline]
 __se_sys_setsockopt net/socket.c:2211 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2211
 x64_sys_call+0x1a2/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c923bba39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c9237c228 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f1c9237c6c0 RCX: 00007f1c923bba39
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f1c92446328 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 00007f1c92446320
R13: 00007f1c9244632c R14: 00007fff013c1f00 R15: 00007fff013c1fe8
 </TASK>