Oops: general protection fault, probably for non-canonical address 0xf8d56c17e0000002: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xc6ab80bf00000010-0xc6ab80bf00000017] CPU: 0 UID: 0 PID: 8797 Comm: syz.2.886 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:selinux_ip_output+0x11c/0x1f0 security/selinux/hooks.c:5762 Code: 00 0f 85 e2 00 00 00 48 63 1d 10 c4 51 09 48 b8 00 00 00 00 00 fc ff df 49 03 9d 98 04 00 00 48 8d 7b 10 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 00 00 00 8b 5b 10 e8 7c 25 RSP: 0018:ffffc900000072f0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: c6ab80bf00000000 RCX: ffffffff8456e02a RDX: 18d57017e0000002 RSI: ffffffff8456e037 RDI: c6ab80bf00000010 RBP: ffff8880251c2640 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000008 R12: ffffc900000073b8 R13: ffff88805bed2160 R14: 0000000000000006 R15: dffffc0000000000 FS: 00005555576df500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002460 CR3: 0000000027cbc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook+0x386/0x6d0 include/linux/netfilter.h:269 __ip_local_out+0x339/0x640 net/ipv4/ip_output.c:119 ip_local_out net/ipv4/ip_output.c:128 [inline] ip_send_skb net/ipv4/ip_output.c:1505 [inline] ip_push_pending_frames+0xa0/0x5b0 net/ipv4/ip_output.c:1525 ip_send_unicast_reply+0xd0e/0x1650 net/ipv4/ip_output.c:1672 tcp_v4_send_ack+0x976/0x13f0 net/ipv4/tcp_ipv4.c:1024 tcp_v4_timewait_ack net/ipv4/tcp_ipv4.c:1077 [inline] tcp_v4_rcv+0x2f8e/0x4380 net/ipv4/tcp_ipv4.c:2428 ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish net/ipv4/ip_input.c:447 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_rcv+0x2c3/0x5d0 net/ipv4/ip_input.c:567 __netif_receive_skb_one_core+0x199/0x1e0 net/core/dev.c:5672 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785 process_backlog+0x443/0x15f0 net/core/dev.c:6117 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6877 napi_poll net/core/dev.c:6946 [inline] net_rx_action+0xa94/0x1010 net/core/dev.c:7068 handle_softirqs+0x213/0x8f0 kernel/softirq.c:554 do_softirq kernel/softirq.c:455 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:442 </IRQ> <TASK> __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] __dev_queue_xmit+0x8b0/0x43e0 net/core/dev.c:4461 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip_finish_output2+0xc6c/0x2150 net/ipv4/ip_output.c:236 __ip_finish_output net/ipv4/ip_output.c:314 [inline] __ip_finish_output+0x49e/0x950 net/ipv4/ip_output.c:296 ip_finish_output+0x35/0x380 net/ipv4/ip_output.c:324 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:434 dst_output include/net/dst.h:450 [inline] ip_local_out+0x33e/0x4a0 net/ipv4/ip_output.c:130 __ip_queue_xmit+0x777/0x1970 net/ipv4/ip_output.c:536 __tcp_transmit_skb+0x2b39/0x3df0 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_write_xmit+0x12b1/0x8560 net/ipv4/tcp_output.c:2827 __tcp_push_pending_frames+0xaf/0x390 net/ipv4/tcp_output.c:3010 tcp_send_fin+0x154/0xc70 net/ipv4/tcp_output.c:3616 __tcp_close+0x96b/0xff0 net/ipv4/tcp.c:3130 tcp_close+0x28/0x120 net/ipv4/tcp.c:3221 inet_release+0x13c/0x280 net/ipv4/af_inet.c:435 __sock_release net/socket.c:640 [inline] sock_release+0x8e/0x1d0 net/socket.c:668 smc_clcsock_release+0xb7/0xe0 net/smc/smc_close.c:34 __smc_release+0x5c2/0x880 net/smc/af_smc.c:301 smc_release+0x1fc/0x5f0 net/smc/af_smc.c:344 __sock_release+0xb0/0x270 net/socket.c:640 sock_close+0x1c/0x30 net/socket.c:1408 __fput+0x3f8/0xb60 fs/file_table.c:450 task_work_run+0x14e/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f68d397ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc46bcab98 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f68d3b47ba0 RCX: 00007f68d397ff19 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f68d3b47ba0 R08: 000000000000153c R09: 00007ffc46bcae7f R10: 00007f68d3b47ac0 R11: 0000000000000246 R12: 000000000003be17 R13: 00007f68d3b46160 R14: 0000000000000032 R15: ffffffffffffffff </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:selinux_ip_output+0x11c/0x1f0 security/selinux/hooks.c:5762 Code: 00 0f 85 e2 00 00 00 48 63 1d 10 c4 51 09 48 b8 00 00 00 00 00 fc ff df 49 03 9d 98 04 00 00 48 8d 7b 10 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 00 00 00 8b 5b 10 e8 7c 25 RSP: 0018:ffffc900000072f0 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: c6ab80bf00000000 RCX: ffffffff8456e02a RDX: 18d57017e0000002 RSI: ffffffff8456e037 RDI: c6ab80bf00000010 RBP: ffff8880251c2640 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000008 R12: ffffc900000073b8 R13: ffff88805bed2160 R14: 0000000000000006 R15: dffffc0000000000 FS: 00005555576df500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002460 CR3: 0000000027cbc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 e2 test %esp,%edx 4: 00 00 add %al,(%rax) 6: 00 48 63 add %cl,0x63(%rax) 9: 1d 10 c4 51 09 sbb $0x951c410,%eax e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 49 03 9d 98 04 00 00 add 0x498(%r13),%rbx 1f: 48 8d 7b 10 lea 0x10(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e 8a 00 00 00 jle 0xc4 3a: 8b 5b 10 mov 0x10(%rbx),%ebx 3d: e8 .byte 0xe8 3e: 7c 25 jl 0x65