watchdog: BUG: soft lockup - CPU#0 stuck for 226s! [syz-executor.0:8603] Modules linked in: CPU: 0 PID: 8603 Comm: syz-executor.0 Not tainted 5.15.161-syzkaller-1074726-gb92c0d35d015 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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:ffffc900020579a0 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 00000000ffffc18e RCX: ffffffff815522af RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888121a98f88 RBP: ffffc90002057a90 R08: dffffc0000000000 R09: ffffed10243531f2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7038ad4 R13: 1ffff110243531f1 R14: 1ffff1103ee00001 R15: ffff888121a98f88 FS: 0000555556dbc480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f22dee4bd58 CR3: 00000001257c3000 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:3269 lock_sock include/net/sock.h:1676 [inline] tipc_release+0xc0/0x1300 net/tipc/socket.c:639 __sock_release net/socket.c:649 [inline] sock_close+0xdf/0x270 net/socket.c:1336 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f22df2e9c9a 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:00007ffe0cf053c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f22df2e9c9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f22df41a980 R08: 0000001b32060000 R09: 00007ffe0cf8d0b0 R10: 0000000000002136 R11: 0000000000000293 R12: 0000000000011aef R13: ffffffffffffffff R14: 00007f22dee6d000 R15: 00000000000117ae Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8604 Comm: syz-executor.0 Not tainted 5.15.161-syzkaller-1074726-gb92c0d35d015 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__rcu_read_lock+0x6/0x80 kernel/rcu/tree_plugin.h:397 Code: 41 fe ff 65 ff 0d c2 29 a5 7e 4d 89 fd 0f 85 d9 fb ff ff e8 08 44 a3 ff e9 cf fb ff ff e8 a2 72 82 03 66 90 55 48 89 e5 41 57 <41> 56 41 54 53 49 be 00 00 00 00 00 fc ff df 65 4c 8b 3d 83 29 a5 RSP: 0018:ffffc90002836948 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8881019cc130 RCX: ffffc90002836903 RDX: 0000000000000000 RSI: 0000000022588bd5 RDI: ffff88810b449000 RBP: ffffc90002836950 R08: ffffffff84cbc128 R09: 0000000000000003 R10: fffff52000506d3c R11: dffffc0000000001 R12: ffff88810bee0000 R13: 1ffff92000506d3c R14: dffffc0000000000 R15: ffff88810b449a38 FS: 00007f22dee6c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000001257c3000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:746 [inline] tipc_sk_lookup+0x103/0x650 net/tipc/socket.c:2998 tipc_sk_rcv+0x459/0x1b50 net/tipc/socket.c:2492 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703 tipc_node_xmit_skb+0x153/0x1b0 net/tipc/node.c:1768 tipc_sk_rcv+0x1690/0x1b50 net/tipc/socket.c:2522 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x194e/0x3380 net/tipc/socket.c:2364 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:1069 [inline] __release_sock+0x145/0x410 net/core/sock.c:2730 release_sock+0x65/0x1b0 net/core/sock.c:3281 tipc_release+0xee9/0x1300 net/tipc/socket.c:652 __sock_release net/socket.c:649 [inline] sock_close+0xdf/0x270 net/socket.c:1336 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f22df2eada9 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:00007f22dee6c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f22df418f80 RCX: 00007f22df2eada9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f22df33747a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f22df418f80 R15: 00007ffe0cf052f8