watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.5463:20911]
Modules linked in:
CPU: 0 PID: 20911 Comm: syz.4.5463 Tainted: G        W         5.10.238-syzkaller-00282-gd76d4cd0623a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:174 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 kernel/kcov.c:197
Code: 60 d9 9e 7e 65 8b 15 65 d9 9e 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 dc 0a 00 00 00 74 2c 8b 91 b8 0a 00 00 <83> fa 02 75 21 48 8b 91 c0 0a 00 00 48 8b 32 48 8d 7e 01 8b 89 bc
RSP: 0018:ffffc90000c868d0 EFLAGS: 00000246
RAX: ffffffff845a19d5 RBX: ffff8881245f6040 RCX: ffff88811ac74f00
RDX: 0000000000000000 RSI: 000000002aad4305 RDI: ffff8881245f6040
RBP: ffffc90000c868d0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000190d2c R11: 1ffff92000190d2c R12: dffffc0000000000
R13: ffffc90000c86e50 R14: 000000002aad4305 R15: 000000002aad4305
FS:  00007f73e8c876c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffde000000 CR3: 0000000124392000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 tipc_sk_lookup+0x75/0x5f0 net/tipc/socket.c:2992
 tipc_sk_rcv+0x3eb/0x1ef0 net/tipc/socket.c:2488
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754
 tipc_sk_rcv+0x19b9/0x1ef0 net/tipc/socket.c:2497
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_sk_push_backlog net/tipc/socket.c:1306 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2253 [inline]
 tipc_sk_filter_rcv+0x1581/0x3850 net/tipc/socket.c:2362
 tipc_sk_enqueue net/tipc/socket.c:2442 [inline]
 tipc_sk_rcv+0x7cc/0x1ef0 net/tipc/socket.c:2493
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754
 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2410
 sk_backlog_rcv include/net/sock.h:1052 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2583
 release_sock net/core/sock.c:3134 [inline]
 sock_setsockopt+0x125e/0x2350 net/core/sock.c:1257
 __sys_setsockopt+0x265/0x460 net/socket.c:2142
 __do_sys_setsockopt net/socket.c:2157 [inline]
 __se_sys_setsockopt net/socket.c:2154 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2154
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f73ea61e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f73e8c87038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f73ea845fa0 RCX: 00007f73ea61e929
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000005
RBP: 00007f73ea6a0b39 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f73ea845fa0 R15: 00007ffd33b13fd8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0x12/0x20 arch/x86/kernel/process.c:711