EXT4-fs error (device loop2): ext4_free_branches:1030: inode #13: comm syz.2.21: invalid indirect mapped block 8 (level 1)
EXT4-fs (loop2): 1 truncate cleaned up
EXT4-fs (loop2): mounted filesystem without journal. Opts: quota,,errors=continue. Quota mode: writeback.
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4208 Comm: syz.2.21 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 : filldir64+0x37c/0x9e4 fs/readdir.c:335
lr : filldir64+0x358/0x9e4 fs/readdir.c:335
sp : ffff80001fd27890
x29: ffff80001fd27900 x28: 0000000000000008 x27: 0000000000000800
x26: ffff80001fd27cb8 x25: 0000000000000002 x24: 0651aba3931a88c5
x23: 0000000000000001 x22: ffff0000eaf8ea2e x21: dfff800000000000
x20: 0000000000400140 x19: 00000000fffffff2 x18: 000000001787991e
x17: 0000000046dfbd2e x16: ffff800008925a48 x15: 00000000b6a06531
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000008 x9 : 0000ffffffffffff
x8 : 0000000000000008 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 filldir64+0x37c/0x9e4 fs/readdir.c:335
 dir_emit include/linux/fs.h:3713 [inline]
 call_filldir fs/ext4/dir.c:548 [inline]
 ext4_dx_readdir fs/ext4/dir.c:624 [inline]
 ext4_readdir+0x28d4/0x2fc8 fs/ext4/dir.c:145
 iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x11c/0x340 fs/readdir.c:354
 __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: d503229f 2a1f03f3 2a1f03e0 f8000958 (2a1303e1) 
---[ end trace 84b594c54a354bd8 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f3 	mov	w19, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	f8000958 	sttr	x24, [x10]
* 10:	2a1303e1 	mov	w1, w19 <-- trapping instruction