watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz-executor.0:2484] Modules linked in: CPU: 0 PID: 2484 Comm: syz-executor.0 Not tainted 5.15.176-syzkaller-1078759-g829d9f138569 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5ba/0xc40 kernel/locking/qspinlock.c:508 Code: 00 00 49 89 dc c6 03 00 48 8b 44 24 10 0f b6 04 10 84 c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 f3 90 c3 74 5e 41 0f b6 44 15 00 84 c0 75 36 41 80 3f 00 75 ea 4c 89 RSP: 0018:ffffc9000162f720 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 00000000ffffd1f4 RCX: ffffffff81553c6f RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888119052d88 RBP: ffffc9000162f810 R08: dffffc0000000000 R09: ffffed102320a5b2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7038ad4 R13: 1ffff1102320a5b1 R14: 1ffff1103ee00001 R15: ffff888119052d88 FS: 00007f30955ee6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffed64af00c CR3: 000000011b8b1000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:368 [inline] lock_sock_nested+0x97/0x300 net/core/sock.c:3272 lock_sock include/net/sock.h:1684 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1549 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2436 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2490 __sys_sendmsg net/socket.c:2519 [inline] __do_sys_sendmsg net/socket.c:2528 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2526 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2526 x64_sys_call+0x16a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47 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: 0033:0x7f3095a6ce69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f30955ee0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3095b9af80 RCX: 00007f3095a6ce69 RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000004 RBP: 00007f3095ab947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f3095b9af80 R15: 00007ffed64aec98 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2485 Comm: syz-executor.0 Not tainted 5.15.176-syzkaller-1078759-g829d9f138569 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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:ffffc900015f6730 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000015f6703 RDX: ffff88811b8d2780 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900015f6730 R08: ffffffff84cdcfef R09: 0000000000000003 R10: fffff520002becf8 R11: dffffc0000000001 R12: fffffffffffffc08 R13: ffff8881190530f8 R14: 0000000000000000 R15: 0000000000000370 FS: 00007f30955cd6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f30955cdd58 CR3: 000000011b8b1000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __rhashtable_lookup include/linux/rhashtable.h:602 [inline] rhashtable_lookup include/linux/rhashtable.h:638 [inline] tipc_sk_lookup+0x31f/0x650 net/tipc/socket.c:2999 tipc_sk_rcv+0x459/0x1b50 net/tipc/socket.c:2492 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: 0033:0x7f3095a6ce69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f30955cd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f3095b9b050 RCX: 00007f3095a6ce69 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f3095ab947a R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f3095b9b050 R15: 00007ffed64aec98