general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 28368 Comm: syz-executor.5 Not tainted 5.3.0-rc6-next-20190830 #75 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:xsk_poll+0x95/0x540 net/xdp/xsk.c:386 Code: 80 3c 02 00 0f 85 70 04 00 00 4c 8b a3 88 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 96 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bf 03 00 00 RSP: 0018:ffff888050baf808 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff8880a0d94000 RCX: ffffc90010dd8000 RDX: 0000000000000012 RSI: ffffffff859b6684 RDI: 0000000000000096 RBP: ffff888050baf838 R08: ffff888056cbc3c0 R09: ffffed10141b2849 R10: ffffed10141b2848 R11: ffff8880a0d94247 R12: 0000000000000000 R13: 0000000000000304 R14: ffff8880a100a0c0 R15: ffff88806cb45aa0 FS: 00007f642b2fa700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cd26000 CR3: 000000009ec64000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_poll+0x15e/0x480 net/socket.c:1256 vfs_poll include/linux/poll.h:90 [inline] p9_fd_poll+0x1d0/0x2c0 net/9p/trans_fd.c:235 p9_conn_create+0x3a3/0x530 net/9p/trans_fd.c:593 p9_fd_create+0x272/0x3a0 net/9p/trans_fd.c:1055 p9_client_create+0x896/0x1430 net/9p/client.c:1038 v9fs_session_init+0x1e7/0x18c0 fs/9p/v9fs.c:406 v9fs_mount+0x7d/0x920 fs/9p/vfs_super.c:120 legacy_get_tree+0x113/0x220 fs/fs_context.c:663 vfs_get_tree+0x8f/0x420 fs/super.c:1482 do_new_mount fs/namespace.c:2796 [inline] do_mount+0x13b3/0x1c30 fs/namespace.c:3116 ksys_mount+0xdb/0x150 fs/namespace.c:3325 __do_sys_mount fs/namespace.c:3339 [inline] __se_sys_mount fs/namespace.c:3336 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3336 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f642b2f9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004598e9 RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075c070 R08: 0000000020000340 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 00007f642b2fa6d4 R13: 00000000004c5e68 R14: 00000000004da9b0 R15: 00000000ffffffff Modules linked in: ---[ end trace b58a3f140a80bf26 ]--- RIP: 0010:xsk_poll+0x95/0x540 net/xdp/xsk.c:386 Code: 80 3c 02 00 0f 85 70 04 00 00 4c 8b a3 88 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 96 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bf 03 00 00 RSP: 0018:ffff888050baf808 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff8880a0d94000 RCX: ffffc90010dd8000 RDX: 0000000000000012 RSI: ffffffff859b6684 RDI: 0000000000000096 RBP: ffff888050baf838 R08: ffff888056cbc3c0 R09: ffffed10141b2849 R10: ffffed10141b2848 R11: ffff8880a0d94247 R12: 0000000000000000 R13: 0000000000000304 R14: ffff8880a100a0c0 R15: ffff88806cb45aa0 FS: 00007f642b2fa700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f74e49a4db8 CR3: 000000009ec64000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400