EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs error (device loop4): ext4_mb_generate_buddy:754: group 0, block bitmap and bg descriptor inconsistent: 27 vs 21 free clusters
------------[ cut here ]------------
WARNING: CPU: 0 PID: 14555 at fs/ext4/xattr.c:1660 ext4_xattr_set_entry+0x24c1/0x30f0 syzkaller/managers/linux-4-14/kernel/fs/ext4/xattr.c:1660
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14555 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack syzkaller/managers/linux-4-14/kernel/lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 syzkaller/managers/linux-4-14/kernel/lib/dump_stack.c:58
 panic+0x1f9/0x42d syzkaller/managers/linux-4-14/kernel/kernel/panic.c:183
 __warn.cold+0x20/0x44 syzkaller/managers/linux-4-14/kernel/kernel/panic.c:547
 report_bug+0x208/0x250 syzkaller/managers/linux-4-14/kernel/lib/bug.c:186
 fixup_bug syzkaller/managers/linux-4-14/kernel/arch/x86/kernel/traps.c:177 [inline]
 fixup_bug syzkaller/managers/linux-4-14/kernel/arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 syzkaller/managers/linux-4-14/kernel/arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/entry_64.S:964
RIP: 0010:ext4_xattr_set_entry+0x24c1/0x30f0 syzkaller/managers/linux-4-14/kernel/fs/ext4/xattr.c:1660
RSP: 0018:ffff88809e4774b0 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888096d7b6e0 RCX: ffffc9000b0dc000
RDX: 00000000000272db RSI: ffffffff81c74811 RDI: ffff88809ed98460
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: ffff88804a118480 R12: 00000000000003dc
R13: ffffffff87933440 R14: 0000000000000000 R15: ffff88809e4777a8
 ext4_xattr_block_set+0x1334/0x2af0 syzkaller/managers/linux-4-14/kernel/fs/ext4/xattr.c:1962
 ext4_xattr_set_handle+0x839/0xd20 syzkaller/managers/linux-4-14/kernel/fs/ext4/xattr.c:2410
 ext4_xattr_set+0x118/0x230 syzkaller/managers/linux-4-14/kernel/fs/ext4/xattr.c:2510
 __vfs_setxattr+0xdc/0x130 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:150
 __vfs_setxattr_noperm+0xfd/0x3d0 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:181
 __vfs_setxattr_locked+0x14d/0x250 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:239
 vfs_setxattr+0xcf/0x230 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:256
 setxattr+0x1a9/0x300 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:523
 path_setxattr+0x118/0x130 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:542
 SYSC_setxattr syzkaller/managers/linux-4-14/kernel/fs/xattr.c:557 [inline]
 SyS_setxattr+0x36/0x50 syzkaller/managers/linux-4-14/kernel/fs/xattr.c:553
 do_syscall_64+0x1d5/0x640 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465d99
RSP: 002b:00007f99ff503188 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465d99
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000040
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffc666d937f R14: 00007f99ff503300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..