cache_from_obj: Wrong slab cache. tw_sock_TCP but object is from kmalloc-512 WARNING: CPU: 0 PID: 28349 at mm/slab.h:376 cache_from_obj mm/slab.h:374 [inline] WARNING: CPU: 0 PID: 28349 at mm/slab.h:376 cache_from_obj mm/slab.h:353 [inline] WARNING: CPU: 0 PID: 28349 at mm/slab.h:376 kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3721 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 28349 Comm: syz-executor.4 Not tainted 5.1.0+ #3 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+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:566 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972 RIP: 0010:cache_from_obj mm/slab.h:376 [inline] RIP: 0010:cache_from_obj mm/slab.h:353 [inline] RIP: 0010:kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3721 Code: e8 45 1f 6a 05 44 8b 6d c4 e9 f4 a5 ff ff 48 8b 48 58 48 c7 c6 c0 29 74 87 48 c7 c7 d8 94 5b 88 49 8b 54 24 58 e8 44 09 b2 ff <0f> 0b e9 79 df ff ff 49 8b 4f 58 48 c7 c6 c0 29 74 87 48 c7 c7 d8 RSP: 0018:ffff88808f35f5d8 EFLAGS: 00010286 RAX: 000000000000004c RBX: ffff8880918bad10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815af236 RDI: ffffed1011e6bead RBP: ffff88808f35f5f8 R08: 000000000000004c R09: ffffed1015d06011 R10: ffffed1015d06010 R11: ffff8880ae830087 R12: ffff8880a76f2780 R13: ffff8880918bad38 R14: 0000000000000000 R15: ffffffff85f1b5b0 inet_twsk_free+0x12d/0x190 net/ipv4/inet_timewait_sock.c:72 inet_twsk_put+0x42/0x50 net/ipv4/inet_timewait_sock.c:79 inet_twsk_deschedule_put+0x38/0x50 net/ipv4/inet_timewait_sock.c:215 __inet_check_established+0xb35/0xd90 net/ipv4/inet_hashtables.c:456 __inet_hash_connect+0xb06/0xfa0 net/ipv4/inet_hashtables.c:652 inet_hash_connect+0x7a/0x150 net/ipv4/inet_hashtables.c:746 tcp_v4_connect+0xe43/0x1c40 net/ipv4/tcp_ipv4.c:279 __inet_stream_connect+0x83f/0xea0 net/ipv4/af_inet.c:659 tcp_sendmsg_fastopen net/ipv4/tcp.c:1143 [inline] tcp_sendmsg_locked+0x231f/0x37f0 net/ipv4/tcp.c:1185 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1419 inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802 sock_sendmsg_nosec net/socket.c:660 [inline] sock_sendmsg+0xf2/0x170 net/socket.c:671 __sys_sendto+0x262/0x380 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1972 do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4842690c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000020001600 R09: 0000000000000010 R10: 00000400200007fd R11: 0000000000000246 R12: 00007f48426916d4 R13: 00000000004c6720 R14: 00000000004db0d8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..