audit: type=1400 audit(1598257119.284:8): avc: denied { execmem } for pid=6343 comm="syz-executor143" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 md: md0 stopped. md: md0 stopped. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6376 at drivers/md/md.c:7190 md_ioctl+0x32e3/0x4be0 drivers/md/md.c:7190 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6376 Comm: syz-executor143 Not tainted 4.14.194-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x4b kernel/panic.c:547 report_bug+0x208/0x249 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:md_ioctl+0x32e3/0x4be0 drivers/md/md.c:7190 RSP: 0018:ffff888098227a48 EFLAGS: 00010297 RAX: ffff888097b3c340 RBX: 1ffff11013044f50 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88809a4b43c0 R08: 0000000000000000 R09: 00000000000403ca R10: ffff888097b3cbc8 R11: ffff888097b3c340 R12: 0000000000000000 R13: ffff8880a6b05140 R14: ffff88809a4b4588 R15: 0000000000000932 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x540/0x1830 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1883 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4468e9 RSP: 002b:00007ffa90133db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004468e9 RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000003 RBP: 00000000006dbc40 R08: 00007ffa90134700 R09: 0000000000000000 R10: 00007ffa90134700 R11: 0000000000000246 R12: 00000000006dbc4c R13: 00007ffeb8d557df R14: 00007ffa901349c0 R15: 0000000000000001 Kernel Offset: disabled Rebooting in 86400 seconds..