audit: type=1400 audit(1602548407.806:8): avc: denied { execmem } for pid=6358 comm="syz-executor881" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6358 at fs/ext4/xattr.c:1660 ext4_xattr_set_entry+0x24c1/0x30f0 fs/ext4/xattr.c:1660 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6358 Comm: syz-executor881 Not tainted 4.14.198-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:ext4_xattr_set_entry+0x24c1/0x30f0 fs/ext4/xattr.c:1660 RSP: 0018:ffff888097d274b0 EFLAGS: 00010297 RAX: ffff8880a54c2680 RBX: ffff888090214020 RCX: 0000000000000005 RDX: 0000000000000000 RSI: ffff888097d277a8 RDI: ffff8880a792e460 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: ffff8880a54c2680 R12: 00000000000003dc R13: ffffffff86b354c0 R14: 0000000000000000 R15: ffff888097d277a8 ext4_xattr_block_set+0x1334/0x2af0 fs/ext4/xattr.c:1962 ext4_xattr_set_handle+0x839/0xd20 fs/ext4/xattr.c:2410 ext4_xattr_set+0x118/0x230 fs/ext4/xattr.c:2510 __vfs_setxattr+0xdc/0x130 fs/xattr.c:150 __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181 __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239 vfs_setxattr+0xcf/0x230 fs/xattr.c:256 setxattr+0x1a9/0x300 fs/xattr.c:523 path_setxattr+0x118/0x130 fs/xattr.c:542 SYSC_lsetxattr fs/xattr.c:564 [inline] SyS_lsetxattr+0x33/0x40 fs/xattr.c:560 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4445a9 RSP: 002b:00007fff52b1b158 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004445a9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..