IPVS: ftp: loaded support on port[0] = 21 NET: Registered protocol family 30 list_add double add: new=ffffffff892e71b0, prev=ffffffff890f2d80, next=ffffffff892e71b0. IPVS: ftp: loaded support on port[0] = 21 cache_from_obj: Wrong slab cache. TIPC but object is from kmalloc-2048 WARNING: CPU: 1 PID: 8162 at mm/slab.h:380 cache_from_obj mm/slab.h:378 [inline] WARNING: CPU: 1 PID: 8162 at mm/slab.h:380 cache_from_obj mm/slab.h:357 [inline] WARNING: CPU: 1 PID: 8162 at mm/slab.h:380 kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3757 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8162 Comm: syz-executor.4 Not tainted 4.19.46 #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x263/0x507 kernel/panic.c:185 __warn.cold+0x20/0x4a kernel/panic.c:540 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1013 RIP: 0010:cache_from_obj mm/slab.h:380 [inline] RIP: 0010:cache_from_obj mm/slab.h:357 [inline] RIP: 0010:kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3757 Code: e8 25 8d 47 05 44 8b 6d c4 e9 74 a5 ff ff 48 8b 48 58 48 c7 c6 40 45 54 87 48 c7 c7 18 64 38 88 49 8b 54 24 58 e8 34 43 b4 ff <0f> 0b e9 89 df ff ff 49 8b 4f 58 48 c7 c6 40 45 54 87 48 c7 c7 18 RSP: 0018:ffff8880ae907cf8 EFLAGS: 00010286 RAX: 0000000000000046 RBX: ffff888091ae4980 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81559e76 RDI: ffffed1015d20f91 RBP: ffff8880ae907d18 R08: 0000000000000046 R09: ffffed1015d24fe9 R10: ffffed1015d24fe8 R11: ffff8880ae927f47 R12: ffff888070d8ad80 R13: 0000000000000000 R14: ffff888070d8ad80 R15: ffff888091ae4c90 sk_prot_free net/core/sock.c:1504 [inline] __sk_destruct+0x4b4/0x6d0 net/core/sock.c:1588 sk_destruct+0x7b/0x90 net/core/sock.c:1596 __sk_free+0xce/0x300 net/core/sock.c:1607 sk_free+0x42/0x50 net/core/sock.c:1618 sock_put include/net/sock.h:1702 [inline] tipc_sk_callback+0x48/0x60 net/tipc/socket.c:495 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1689 [inline] RIP: 0010:vprintk_emit+0x5b8/0x690 kernel/printk/printk.c:1926 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 a2 00 00 00 48 83 3d dc bb 1c 07 00 74 29 e8 8d 84 15 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 79 fe ff ff e8 79 84 15 00 0f 0b e8 72 84 15 00 RSP: 0018:ffff888071f97a78 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff888071f8c340 RBX: 0000000000000293 RCX: 1ffff1100e3f197c RDX: 0000000000000000 RSI: ffffffff81557af3 RDI: 0000000000000293 RBP: ffff888071f97ac0 R08: ffff888071f8c340 R09: ffff888071f8cbe0 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000029 R13: 1ffffffff10e46d9 R14: 0000000000000200 R15: ffff888098a1e300 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 __ip_vs_ftp_init.cold+0x5b/0x6a net/netfilter/ipvs/ip_vs_ftp.c:600 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2d3/0x740 net/core/net_namespace.c:315 copy_net_ns+0x1df/0x340 net/core/net_namespace.c:438 create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:206 ksys_unshare+0x440/0x980 kernel/fork.c:2525 __do_sys_unshare kernel/fork.c:2593 [inline] __se_sys_unshare kernel/fork.c:2591 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:2591 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45bd47 Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fd 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd2ed59d18 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 000000000075c9a8 RCX: 000000000045bd47 RDX: 0000000000000000 RSI: 00007ffd2ed59cc0 RDI: 0000000040000000 RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000075c9a8 R13: 00007ffd2ed59f88 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..