kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 15106 Comm: syz-executor.1 Not tainted 5.3.0-rc3+ #139 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:sctp_inq_pop+0x294/0xd80 net/sctp/inqueue.c:201 Code: 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 e3 08 00 00 49 8d 7d 02 4d 89 6c 24 60 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 4b RSP: 0018:ffff88805f5c6e40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888091ef8e98 RCX: 0000000000000001 RDX: 00000000000089cb RSI: ffffffff86b236aa RDI: 000000000000000a RBP: ffff88805f5c6e90 R08: ffff888067ac4440 R09: fffffbfff14a914f R10: fffffbfff14a914e R11: ffffffff8a548a77 R12: ffff888091ef8e40 R13: 0000000000000008 R14: 0000000000000000 R15: ffff88805f5c7478 FS: 00007f0309e62700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 000000008d244000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sctp_endpoint_bh_rcv+0x184/0x8d0 net/sctp/endpointola.c:385 sctp_inq_push+0x1e4/0x280 net/sctp/inqueue.c:80 sctp_rcv+0x2807/0x3590 net/sctp/input.c:256 sctp6_rcv+0x17/0x30 net/sctp/ipv6.c:1049 ip6_protocol_deliver_rcu+0x2fe/0x1660 net/ipv6/ip6_input.c:397 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:438 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:447 dst_input include/net/dst.h:442 [inline] ip6_sublist_rcv_finish+0x98/0x1e0 net/ipv6/ip6_input.c:84 ip6_list_rcv_finish net/ipv6/ip6_input.c:118 [inline] ip6_sublist_rcv+0x80c/0xcf0 net/ipv6/ip6_input.c:282 ipv6_list_rcv+0x373/0x4b0 net/ipv6/ip6_input.c:316 __netif_receive_skb_list_ptype net/core/dev.c:5049 [inline] __netif_receive_skb_list_core+0x1a2/0x9d0 net/core/dev.c:5087 __netif_receive_skb_list net/core/dev.c:5149 [inline] netif_receive_skb_list_internal+0x7eb/0xe60 net/core/dev.c:5244 gro_normal_list.part.0+0x1e/0xb0 net/core/dev.c:5757 gro_normal_list net/core/dev.c:5755 [inline] gro_normal_one net/core/dev.c:5769 [inline] napi_frags_finish net/core/dev.c:5782 [inline] napi_gro_frags+0xa6a/0xea0 net/core/dev.c:5855 tun_get_user+0x2e98/0x3fa0 drivers/net/tun.c:1974 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2020 call_write_iter include/linux/fs.h:1870 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015 do_writev+0x15b/0x330 fs/read_write.c:1058 __do_sys_writev fs/read_write.c:1131 [inline] __se_sys_writev fs/read_write.c:1128 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4596e1 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f0309e61ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00000000200045d5 RCX: 00000000004596e1 RDX: 0000000000000002 RSI: 00007f0309e61c00 RDI: 00000000000000f0 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0309e626d4 R13: 00000000004c8783 R14: 00000000004df5a0 R15: 00000000ffffffff Modules linked in: ---[ end trace e99ec78ddfca0ab5 ]--- RIP: 0010:sctp_inq_pop+0x294/0xd80 net/sctp/inqueue.c:201 Code: 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 e3 08 00 00 49 8d 7d 02 4d 89 6c 24 60 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 4b RSP: 0018:ffff88805f5c6e40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888091ef8e98 RCX: 0000000000000001 RDX: 00000000000089cb RSI: ffffffff86b236aa RDI: 000000000000000a RBP: ffff88805f5c6e90 R08: ffff888067ac4440 R09: fffffbfff14a914f R10: fffffbfff14a914e R11: ffffffff8a548a77 R12: ffff888091ef8e40 R13: 0000000000000008 R14: 0000000000000000 R15: ffff88805f5c7478 FS: 00007f0309e62700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 000000008d244000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400