Warning: Permanently added '10.128.1.44' (ECDSA) to the list of known hosts. syzkaller login: [ 47.964723] audit: type=1400 audit(1591624953.496:8): avc: denied { execmem } for pid=6326 comm="syz-executor561" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 48.201408] IPVS: ftp: loaded support on port[0] = 21 [ 49.047368] FAULT_INJECTION: forcing a failure. [ 49.047368] name failslab, interval 1, probability 0, space 0, times 1 [ 49.059051] CPU: 0 PID: 6359 Comm: syz-executor561 Not tainted 4.14.183-syzkaller #0 [ 49.066944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.076903] Call Trace: [ 49.079496] dump_stack+0x1b2/0x283 [ 49.083128] should_fail.cold+0x10a/0x154 [ 49.087344] should_failslab+0xd6/0x130 [ 49.091375] __kmalloc+0x2c1/0x400 [ 49.095340] ? register_shrinker+0x1ab/0x220 [ 49.099744] register_shrinker+0x1ab/0x220 [ 49.103991] sget_userns+0x9c5/0xc30 [ 49.111446] ? set_gfs2_super+0x110/0x110 [ 49.115587] ? gfs2_open+0x170/0x170 [ 49.119306] ? set_gfs2_super+0x110/0x110 [ 49.125998] ? gfs2_open+0x170/0x170 [ 49.129960] sget+0xd1/0x110 [ 49.137939] gfs2_mount+0x10f/0x4f3 [ 49.141548] ? fill_super+0x22a0/0x22a0 [ 49.145809] ? debug_object_activate+0x450/0x450 [ 49.150657] ? free_hot_cold_page+0x879/0xc90 [ 49.155389] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 49.160756] ? selinux_sb_copy_data+0x206/0x380 [ 49.165847] mount_fs+0x92/0x2a0 [ 49.169206] vfs_kern_mount.part.0+0x5b/0x3c0 [ 49.174382] do_mount+0x3c9/0x25e0 [ 49.177920] ? copy_mount_string+0x40/0x40 [ 49.182148] ? kmem_cache_alloc_trace+0x389/0x3f0 [ 49.186972] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.190847] ? copy_mount_options+0x1ec/0x2e0 [ 49.195326] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.199189] SyS_mount+0xa8/0x120 [ 49.202793] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.206752] do_syscall_64+0x1d5/0x640 [ 49.210644] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 49.215812] RIP: 0033:0x44881a [ 49.218988] RSP: 002b:00007ffe04710b68 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 49.226795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044881a [ 49.234233] RDX: 00007ffe04710bb0 RSI: 0000000020000fc0 RDI: 00007ffe04710bd0 [ 49.241475] RBP: 0000000000000000 R08: 00007ffe04710c10 R09: 0000000000000000 [ 49.248734] R10: 0000000000000000 R11: 0000000000000293 R12: ffffffffffffffff [ 49.255984] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 49.264752] ------------[ cut here ]------------ [ 49.270024] WARNING: CPU: 1 PID: 6359 at fs/super.c:1163 kill_block_super+0xbe/0xe0 [ 49.279746] Kernel panic - not syncing: panic_on_warn set ... [ 49.279746] [ 49.287130] CPU: 1 PID: 6359 Comm: syz-executor561 Not tainted 4.14.183-syzkaller #0 [ 49.296351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.306293] Call Trace: [ 49.309231] dump_stack+0x1b2/0x283 [ 49.312868] panic+0x1f9/0x42d [ 49.316055] ? add_taint.cold+0x16/0x16 [ 49.320008] ? kill_block_super+0xbe/0xe0 [ 49.324134] ? kill_block_super+0xbe/0xe0 [ 49.328264] __warn.cold+0x2f/0x30 [ 49.331899] ? ist_end_non_atomic+0x10/0x10 [ 49.336209] ? kill_block_super+0xbe/0xe0 [ 49.340350] report_bug+0x20a/0x248 [ 49.343962] do_error_trap+0x195/0x2d0 [ 49.347979] ? math_error+0x2d0/0x2d0 [ 49.351953] ? retint_kernel+0x2d/0x2d [ 49.355826] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.360735] invalid_op+0x1b/0x40 [ 49.364542] RIP: 0010:kill_block_super+0xbe/0xe0 [ 49.369276] RSP: 0018:ffff888084c27a98 EFLAGS: 00010297 [ 49.374620] RAX: ffff888097634240 RBX: 0000000000000000 RCX: 1ffff11012ec6957 [ 49.381961] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880a6ef04e8 [ 49.389495] RBP: ffff88809b284500 R08: 0000000000000001 R09: 0000000000000001 [ 49.397086] R10: ffff888097634b18 R11: ffff888097634240 R12: ffff8880a6ef0140 [ 49.404416] R13: ffff88809b284640 R14: dffffc0000000000 R15: ffffffff87b53300 [ 49.412003] ? kill_block_super+0xbe/0xe0 [ 49.416154] gfs2_kill_sb+0x144/0x1a0 [ 49.419935] deactivate_locked_super+0x6c/0xd0 [ 49.424497] sget_userns+0x9df/0xc30 [ 49.428189] ? set_gfs2_super+0x110/0x110 [ 49.432358] ? gfs2_open+0x170/0x170 [ 49.436065] ? set_gfs2_super+0x110/0x110 [ 49.440286] ? gfs2_open+0x170/0x170 [ 49.443988] sget+0xd1/0x110 [ 49.447010] gfs2_mount+0x10f/0x4f3 [ 49.450621] ? fill_super+0x22a0/0x22a0 [ 49.454589] ? debug_object_activate+0x450/0x450 [ 49.459337] ? free_hot_cold_page+0x879/0xc90 [ 49.463812] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 49.468807] ? selinux_sb_copy_data+0x206/0x380 [ 49.473484] mount_fs+0x92/0x2a0 [ 49.477507] vfs_kern_mount.part.0+0x5b/0x3c0 [ 49.482062] do_mount+0x3c9/0x25e0 [ 49.485588] ? copy_mount_string+0x40/0x40 [ 49.489906] ? kmem_cache_alloc_trace+0x389/0x3f0 [ 49.494739] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.498603] ? copy_mount_options+0x1ec/0x2e0 [ 49.503075] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.506940] SyS_mount+0xa8/0x120 [ 49.510369] ? copy_mnt_ns+0x8a0/0x8a0 [ 49.514259] do_syscall_64+0x1d5/0x640 [ 49.518142] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 49.523328] RIP: 0033:0x44881a [ 49.526499] RSP: 002b:00007ffe04710b68 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 49.534198] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044881a [ 49.541453] RDX: 00007ffe04710bb0 RSI: 0000000020000fc0 RDI: 00007ffe04710bd0 [ 49.548723] RBP: 0000000000000000 R08: 00007ffe04710c10 R09: 0000000000000000 [ 49.556034] R10: 0000000000000000 R11: 0000000000000293 R12: ffffffffffffffff [ 49.563833] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 49.572532] Kernel Offset: disabled [ 49.576216] Rebooting in 86400 seconds..