EXT4-fs (loop2): mounted filesystem without journal. Opts: data_err=ignore,errors=remount-ro,. Quota mode: none.
EXT4-fs error (device loop2): ext4_validate_block_bitmap:438: comm syz.2.108: bg 0: block 280: padding at end of block bitmap is not set
EXT4-fs (loop2): Remounting filesystem read-only
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4716 Comm: syz.2.108 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : __ext4_ioctl fs/ext4/ioctl.c:888 [inline]
pc : ext4_ioctl+0x2120/0x3614 fs/ext4/ioctl.c:1282
lr : __ext4_ioctl fs/ext4/ioctl.c:888 [inline]
lr : ext4_ioctl+0x20f4/0x3614 fs/ext4/ioctl.c:1282
sp : ffff80001f9778c0
x29: ffff80001f977cd0 x28: ffff80001f9778e0 x27: ffff700003f2ef1c
x26: ffff0000d9118000 x25: 0000000000000000 x24: ffff0000db75b400
x23: ffff0000eaec16b8 x22: ffff0000eaec1690 x21: 00000000fffffff2
x20: dfff800000000000 x19: 1fffe0001d5d82d7 x18: 0000000000000000
x17: ffff800016d04000 x16: ffff800008cc3cac x15: ffff8000167e4500
x14: ffff0000d521c080 x13: dfff800000000000 x12: 0000000000ff0100
x11: 0000000020000a80 x10: 0000000020000a80 x9 : 0000ffffffffffff
x8 : 0000000020000a80 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff800016f5a978 x4 : 0000000000000002 x3 : ffff8000082bfb8c
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __ext4_ioctl fs/ext4/ioctl.c:888 [inline]
 ext4_ioctl+0x2120/0x3614 fs/ext4/ioctl.c:1282
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: ea29011f 9a9f016a d503229f b8400959 (2a1503e1) 
---[ end trace edbe1530400597f2 ]---
----------------
Code disassembly (best guess):
   0:	ea29011f 	bics	xzr, x8, x9
   4:	9a9f016a 	csel	x10, x11, xzr, eq	// eq = none
   8:	d503229f 	csdb
   c:	b8400959 	ldtr	w25, [x10]
* 10:	2a1503e1 	mov	w1, w21 <-- trapping instruction