Warning: Permanently added '10.128.0.78' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.165700][ T27] audit: type=1400 audit(1597500437.066:8): avc: denied { execmem } for pid=6850 comm="syz-executor232" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 73.184204][ T6850] ------------[ cut here ]------------ [ 73.191884][ T6850] WARNING: CPU: 1 PID: 6850 at fs/overlayfs/file.c:81 ovl_real_fdget_meta+0x49c/0x530 [ 73.205145][ T6850] Kernel panic - not syncing: panic_on_warn set ... [ 73.211762][ T6850] CPU: 1 PID: 6850 Comm: syz-executor232 Not tainted 5.8.0-syzkaller #0 [ 73.220167][ T6850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.230225][ T6850] Call Trace: [ 73.233506][ T6850] dump_stack+0x18f/0x20d [ 73.237841][ T6850] panic+0x2e3/0x75c [ 73.241713][ T6850] ? __warn_printk+0xf3/0xf3 [ 73.246280][ T6850] ? printk+0xba/0xed [ 73.250253][ T6850] ? log_store.cold+0x16/0x16 [ 73.254902][ T6850] ? kasan_save_stack+0x32/0x40 [ 73.259749][ T6850] ? __warn.cold+0x5/0x4a [ 73.264066][ T6850] ? __warn+0xd6/0x1f2 [ 73.268127][ T6850] ? ovl_real_fdget_meta+0x49c/0x530 [ 73.273400][ T6850] __warn.cold+0x20/0x4a [ 73.277636][ T6850] ? ovl_real_fdget_meta+0x49c/0x530 [ 73.282917][ T6850] report_bug+0x1bd/0x210 [ 73.287235][ T6850] handle_bug+0x38/0x90 [ 73.291381][ T6850] exc_invalid_op+0x14/0x40 [ 73.295859][ T6850] asm_exc_invalid_op+0x12/0x20 [ 73.300686][ T6850] RIP: 0010:ovl_real_fdget_meta+0x49c/0x530 [ 73.306571][ T6850] Code: ff 4c 89 ff e8 15 8a 2b ff e9 ff fc ff ff e8 0b 8a 2b ff e9 c5 fc ff ff 4c 89 f7 e8 6e 8a 2b ff e9 5d fd ff ff e8 74 79 eb fe <0f> 0b 41 bd fb ff ff ff e9 fd fc ff ff e8 f2 89 2b ff e9 84 fb ff [ 73.326157][ T6850] RSP: 0018:ffffc900054a7a78 EFLAGS: 00010293 [ 73.332199][ T6850] RAX: 0000000000000000 RBX: 0000000000002000 RCX: ffffffff8288d0d9 [ 73.340162][ T6850] RDX: ffff88809f3c4080 RSI: ffffffff8288d30c RDI: 0000000000000005 [ 73.348109][ T6850] RBP: 0000000004048000 R08: 0000000000000000 R09: 0000000000000000 [ 73.356071][ T6850] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88809f488ac0 [ 73.364030][ T6850] R13: ffff888084007738 R14: 000000000000a000 R15: ffff88809f488b40 [ 73.371997][ T6850] ? ovl_real_fdget_meta+0x269/0x530 [ 73.377259][ T6850] ? ovl_real_fdget_meta+0x49c/0x530 [ 73.382523][ T6850] ? ovl_real_fdget_meta+0x49c/0x530 [ 73.387827][ T6850] ovl_splice_read+0x83/0x1f0 [ 73.392493][ T6850] ? ovl_mmap+0x2f0/0x2f0 [ 73.396795][ T6850] ? security_file_permission+0x248/0x560 [ 73.402494][ T6850] ? ovl_mmap+0x2f0/0x2f0 [ 73.406798][ T6850] do_splice_to+0x10b/0x170 [ 73.411286][ T6850] splice_direct_to_actor+0x307/0x980 [ 73.416632][ T6850] ? generic_splice_sendpage+0x140/0x140 [ 73.422243][ T6850] ? do_splice_to+0x170/0x170 [ 73.426906][ T6850] ? security_file_permission+0x248/0x560 [ 73.432604][ T6850] do_splice_direct+0x1b3/0x280 [ 73.437446][ T6850] ? splice_direct_to_actor+0x980/0x980 [ 73.442986][ T6850] ? __sb_start_write+0x1d5/0x470 [ 73.447992][ T6850] do_sendfile+0x55f/0xd40 [ 73.452389][ T6850] ? do_compat_pwritev64+0x1b0/0x1b0 [ 73.457664][ T6850] ? do_fcntl+0xa3/0x1070 [ 73.461980][ T6850] ? f_setown+0x230/0x230 [ 73.466289][ T6850] __x64_sys_sendfile64+0x1cc/0x210 [ 73.471464][ T6850] ? __ia32_sys_sendfile+0x220/0x220 [ 73.476724][ T6850] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.482678][ T6850] ? trace_hardirqs_on+0x5f/0x220 [ 73.487680][ T6850] ? lockdep_hardirqs_on+0x76/0xf0 [ 73.492766][ T6850] do_syscall_64+0x2d/0x70 [ 73.498118][ T6850] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.504008][ T6850] RIP: 0033:0x4403d9 [ 73.507880][ T6850] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.527473][ T6850] RSP: 002b:00007ffe69826018 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 73.535866][ T6850] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403d9 [ 73.543811][ T6850] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 73.551770][ T6850] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 73.559716][ T6850] R10: 000000000000bd96 R11: 0000000000000246 R12: 0000000000401be0 [ 73.567661][ T6850] R13: 0000000000401c70 R14: 0000000000000000 R15: 0000000000000000 [ 73.576712][ T6850] Kernel Offset: disabled [ 73.581075][ T6850] Rebooting in 86400 seconds..