watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:1277] Modules linked in: CPU: 1 PID: 1277 Comm: syz-executor.0 Not tainted 5.10.234-syzkaller-1006684-g094fc3778d6b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5a1/0xc70 kernel/locking/qspinlock.c:508 Code: 85 ba 01 00 00 c6 03 00 48 8b 44 24 28 42 0f b6 04 30 84 c0 0f 85 bf 01 00 00 48 8b 04 24 c6 00 01 bb 00 80 ff ff eb 06 f3 90 c3 74 50 43 0f b6 44 35 00 84 c0 75 32 41 80 3c 24 00 75 e9 4c RSP: 0018:ffffc90001d47aa0 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 00000000ffff85f5 RCX: ffffffff8150ca54 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90001d47a20 RBP: ffffc90001d47b90 R08: dffffc0000000000 R09: ffffed1021f70292 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810fb81488 R13: 1ffff11021f70291 R14: dffffc0000000000 R15: ffff88823ff52140 FS: 00005555762ad480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe033974d58 CR3: 000000010a65b000 CR4: 00000000003506a0 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:554 [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:183 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] lock_sock_nested+0x92/0x300 net/core/sock.c:3117 lock_sock include/net/sock.h:1648 [inline] tipc_release+0x57/0x1440 net/tipc/socket.c:626 __sock_release net/socket.c:597 [inline] sock_close+0xdf/0x270 net/socket.c:1286 __fput+0x33d/0x7b0 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x129/0x190 kernel/task_work.c:189 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fe033e12c9a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffd061bb060 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fe033e12c9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fe033f43980 R08: 0000001b31760000 R09: 00007ffd061d50b0 R10: 000000000000104a R11: 0000000000000293 R12: 000000000000c225 R13: ffffffffffffffff R14: 00007fe033996000 R15: 000000000000bee4 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1278 Comm: syz-executor.0 Not tainted 5.10.234-syzkaller-1006684-g094fc3778d6b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__refcount_add include/linux/refcount.h:198 [inline] RIP: 0010:__refcount_inc include/linux/refcount.h:250 [inline] RIP: 0010:refcount_inc include/linux/refcount.h:267 [inline] RIP: 0010:sock_hold include/net/sock.h:732 [inline] RIP: 0010:tipc_sk_lookup+0x4ed/0x650 net/tipc/socket.c:2999 Code: 0f b7 00 49 29 c5 74 63 4d 8d b5 80 00 00 00 4c 89 f7 be 04 00 00 00 e8 d1 20 0e fd bb 01 00 00 00 f0 41 0f c1 9d 80 00 00 00 <31> ff 89 de e8 2a 83 d0 fc 85 db 0f 84 83 00 00 00 44 8d 7b 01 44 RSP: 0018:ffffc900013c6940 EFLAGS: 00000206 RAX: 0000000000000301 RBX: 0000000000000004 RCX: ffffffff849a3fbf RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88810fb81480 RBP: ffffc900013c6a30 R08: dffffc0000000000 R09: ffffed1021f70291 R10: 0000000000000000 R11: dffffc0000000001 R12: fffffffffffffc18 R13: ffff88810fb81400 R14: ffff88810fb81480 R15: 000000000000035c FS: 00007fe0339956c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000010a65b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_sk_rcv+0x499/0x1e30 net/tipc/socket.c:2488 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb+0x153/0x1b0 net/tipc/node.c:1739 tipc_sk_rcv+0x1c0b/0x1e30 net/tipc/socket.c:2518 tipc_node_xmit+0x34b/0xe30 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+0x1da8/0x3e00 net/tipc/socket.c:2362 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0x8a1/0x1e30 net/tipc/socket.c:2493 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1052 [inline] __release_sock+0x148/0x410 net/core/sock.c:2583 release_sock+0x65/0x1b0 net/core/sock.c:3134 tipc_release+0xb6b/0x1440 net/tipc/socket.c:639 __sock_release net/socket.c:597 [inline] sock_close+0xdf/0x270 net/socket.c:1286 __fput+0x33d/0x7b0 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x129/0x190 kernel/task_work.c:189 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fe033e13da9 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:00007fe0339950c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fe033f41f80 RCX: 00007fe033e13da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007fe033e6047a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe033f41f80 R15: 00007ffd061baf98