IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [kworker/u4:4:2944] Modules linked in: watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/u4:0:7] irq event stamp: 109387 Modules linked in: hardirqs last enabled at (109386): [] kvm_wait arch/x86/kernel/kvm.c:799 [inline] hardirqs last enabled at (109386): [] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:779 irq event stamp: 196799 hardirqs last disabled at (109387): [] trace_hardirqs_off_thunk+0x1a/0x1c hardirqs last enabled at (196798): [] trace_hardirqs_on_thunk+0x1a/0x1c softirqs last enabled at (98718): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (98718): [] tipc_conn_kref_release net/tipc/topsrv.c:149 [inline] softirqs last enabled at (98718): [] kref_put include/linux/kref.h:70 [inline] softirqs last enabled at (98718): [] conn_put+0x2c5/0x3a0 net/tipc/topsrv.c:155 hardirqs last disabled at (196799): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last disabled at (98724): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (98724): [] tipc_conn_kref_release net/tipc/topsrv.c:137 [inline] softirqs last disabled at (98724): [] kref_put include/linux/kref.h:70 [inline] softirqs last disabled at (98724): [] conn_put+0x7a/0x3a0 net/tipc/topsrv.c:155 CPU: 0 PID: 2944 Comm: kworker/u4:4 Not tainted 4.19.211-syzkaller #0 softirqs last enabled at (191468): [] tipc_shutdown+0x121/0x310 net/tipc/socket.c:2603 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 softirqs last disabled at (191470): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (191470): [] tipc_topsrv_stop net/tipc/topsrv.c:702 [inline] softirqs last disabled at (191470): [] tipc_topsrv_exit_net+0x283/0x5c0 net/tipc/topsrv.c:722 Workqueue: tipc_rcv tipc_conn_recv_work CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Code: 48 89 df e8 f4 20 7f f9 e9 2e ff ff ff 48 89 df e8 e7 20 7f f9 eb 82 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 14 43 4e 00 fb f4 90 e9 07 00 00 00 0f 00 2d 04 43 4e 00 f4 c3 90 90 41 56 41 55 Workqueue: netns cleanup_net RSP: 0018:ffff8880abedfbb8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 RAX: 1ffffffff13e3054 RBX: ffff888098506610 RCX: 1ffff110157da52f Code: e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 <65> 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 RDX: dffffc0000000000 RSI: ffff8880abed2958 RDI: ffff8880abed2904 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 RSP: 0018:ffff8880b5a47bc0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: ffffed10130a0cc2 R14: 0000000000000001 R15: ffff8880ba02be00 RAX: 0000000000000000 RBX: 000000002c477fc7 RCX: ffffffff87bb46ad FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 RDX: 1ffff110130a0cc1 RSI: ffffffff87eef67e RDI: ffff8880985065c0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RBP: ffff8880985065c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 000000002c477fc7 CR2: 00007ffea72972d8 CR3: 00000000a886a000 CR4: 00000000003406f0 R13: ffffed10130a0cc9 R14: ffff88808dfdd980 R15: 0000000000000046 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] kvm_wait arch/x86/kernel/kvm.c:799 [inline] kvm_wait+0x179/0x240 arch/x86/kernel/kvm.c:779 CR2: 00007f05b239b01d CR3: 00000000a98d0000 CR4: 00000000003406e0 pv_wait arch/x86/include/asm/paravirt.h:689 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:471 [inline] __pv_queued_spin_lock_slowpath+0x86a/0xae0 kernel/locking/qspinlock.c:474 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: radix_tree_lookup+0xe/0x20 lib/radix-tree.c:1099 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:679 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:53 [inline] queued_spin_lock include/asm-generic/qspinlock.h:88 [inline] do_raw_spin_lock+0x189/0x220 kernel/locking/spinlock_debug.c:113 tipc_topsrv_stop net/tipc/topsrv.c:698 [inline] tipc_topsrv_exit_net+0x25e/0x5c0 net/tipc/topsrv.c:722 spin_lock_bh include/linux/spinlock.h:334 [inline] tipc_conn_kref_release net/tipc/topsrv.c:137 [inline] kref_put include/linux/kref.h:70 [inline] conn_put+0x7a/0x3a0 net/tipc/topsrv.c:155 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 kthread+0x33f/0x460 kernel/kthread.c:259 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kthread+0x33f/0x460 kernel/kthread.c:259 ---------------- Code disassembly (best guess): 0: 48 89 df mov %rbx,%rdi 3: e8 f4 20 7f f9 callq 0xf97f20fc 8: e9 2e ff ff ff jmpq 0xffffff3b d: 48 89 df mov %rbx,%rdi 10: e8 e7 20 7f f9 callq 0xf97f20fc 15: eb 82 jmp 0xffffff99 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: e9 07 00 00 00 jmpq 0x28 21: 0f 00 2d 14 43 4e 00 verw 0x4e4314(%rip) # 0x4e433c 28: fb sti 29: f4 hlt * 2a: c3 retq <-- trapping instruction 2b: 90 nop 2c: e9 07 00 00 00 jmpq 0x38 31: 0f 00 2d 04 43 4e 00 verw 0x4e4304(%rip) # 0x4e433c 38: f4 hlt 39: c3 retq 3a: 90 nop 3b: 90 nop 3c: 41 56 push %r14 3e: 41 55 push %r13