watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.7.1482:5688]
Modules linked in:
CPU: 0 PID: 5688 Comm: syz.7.1482 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x60 kernel/kcov.c:197
Code: 48 8b 3d ec ac 3f 05 48 89 de e8 74 50 39 00 5b 5d c3 00 55 48 89 e5 48 8b 45 08 65 48 8b 0d d0 c7 9e 7e 65 8b 15 d5 c7 9e 7e <f7> c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 dc 0a 00 00
RSP: 0018:ffffc900024fe9d0 EFLAGS: 00000246
RAX: ffffffff845d67ba RBX: ffffc900024fee40 RCX: ffff888129423b40
RDX: 0000000000000201 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900024fe9d0 R08: dffffc0000000000 R09: ffffed10228949f2
R10: ffffed10228949f2 R11: 1ffff110228949f1 R12: dffffc0000000000
R13: ffff8881144a4f00 R14: 0000000000000000 R15: 00000000ea92a265
FS:  00007f7dedf176c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001020 CR3: 0000000114910000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 tipc_sk_rcv+0x1caa/0x1ef0 net/tipc/socket.c:2492
 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:1058 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2588
 release_sock net/core/sock.c:3139 [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: 0033:0x7f7def4cfec9
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:00007f7dedf17038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f7def727090 RCX: 00007f7def4cfec9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f7def552f91 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7def727128 R14: 00007f7def727090 R15: 00007ffc676cc9a8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4165 Comm: udevd Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__kasan_check_write+0x15/0x20 mm/kasan/shadow.c:37
Code: d2 e8 bf ed ff ff 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 89 f6 48 8b 4d 08 ba 01 00 00 00 e8 9c ed ff ff 5d <c3> 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 53 48 89
RSP: 0018:ffffc90001447b58 EFLAGS: 00000097
RAX: 1ffff11021f18601 RBX: ffff888115cd6970 RCX: ffffffff84781c0f
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90001447b80
RBP: ffffc90001447bf0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000288f70 R11: 1ffff92000288f70 R12: dffffc0000000000
R13: ffffc90001447c80 R14: ffffc90001447b80 R15: 1ffff92000288f6c
FS:  00007f1e3ceb8880(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556e6fb5cb98 CR3: 0000000111d37000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 ep_scan_ready_list+0xf1/0x5e0 fs/eventpoll.c:709
 ep_send_events fs/eventpoll.c:1805 [inline]
 ep_poll fs/eventpoll.c:1994 [inline]
 do_epoll_wait+0x74d/0xe40 fs/eventpoll.c:2375
 __do_sys_epoll_wait fs/eventpoll.c:2385 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2382 [inline]
 __x64_sys_epoll_wait+0x9a/0xb0 fs/eventpoll.c:2382
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1e3cfa6407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc07eac1f0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007f1e3ceb8880 RCX: 00007f1e3cfa6407
RDX: 0000000000000004 RSI: 00007ffc07eac280 RDI: 0000000000000004
RBP: 000055df451462c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000202 R12: 00007ffc07eac28c
R13: 00007ffc07eac280 R14: 0000000000000000 R15: 0000000000000001