__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Unable to handle kernel paging request at virtual address 00000000ffffffff
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005
  CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=000000014340b000
[00000000ffffffff] pgd=08000001161be003, p4d=08000001161be003, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 5871 Comm: syz.3.315 Not tainted 6.1.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : scnprintf_cpu_key fs/reiserfs/prints.c:95 [inline]
pc : prepare_error_buf+0x790/0x1850 fs/reiserfs/prints.c:229
lr : prepare_error_buf+0x4a4/0x1850 fs/reiserfs/prints.c:230
sp : ffff8000213a71a0
x29: ffff8000213a7320 x28: ffffffffffffffe2 x27: ffff80001c3f99be
x26: ffff8000213a7220 x25: 00000000ffffffff x24: ffff80001c3f8abe
x23: 000000000000004b x22: ffff8000213a73a0 x21: ffff8000213a7380
x20: ffff8000153bdb60 x19: dfff800000000000 x18: ffff800011a7bd00
x17: ffff80001819f000 x16: ffff8000082e6f70 x15: 0000000000000000
x14: 000000000000007a x13: 0000000000ff0100 x12: 0000000000ff0100
x11: ff00800008ca2e0c x10: 0000000000000000 x9 : ffff800008ca2e0c
x8 : 0000000000000000 x7 : 20726f6620686372 x6 : 7261657320666f20
x5 : ffff80001c3f8abe x4 : ffff80001c3f99be x3 : ffff80001180c4c8
x2 : 000000000000000f x1 : 00000000ffffffe0 x0 : 00000000ffffffff
Call trace:
 scnprintf_cpu_key fs/reiserfs/prints.c:95 [inline]
 prepare_error_buf+0x790/0x1850 fs/reiserfs/prints.c:229
 __reiserfs_error+0xd0/0x28c fs/reiserfs/prints.c:396
 reiserfs_do_truncate+0x3a8/0x1020 fs/reiserfs/stree.c:1930
 reiserfs_truncate_file+0x5c0/0xaf4 fs/reiserfs/inode.c:2310
 reiserfs_vfs_truncate_file+0x34/0x4c fs/reiserfs/file.c:133
 reiserfs_direct_IO+0x1e8/0x20c fs/reiserfs/inode.c:3258
 generic_file_direct_write+0x31c/0x620 mm/filemap.c:3770
 __generic_file_write_iter+0x1bc/0x37c mm/filemap.c:3930
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:4006
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x5ac/0x7c4 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __arm64_sys_pwrite64+0x170/0x200 fs/read_write.c:706
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: d343ff28 38f36908 35005d08 aa1903e0 (b8404408) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d343ff28 	lsr	x8, x25, #3
   4:	38f36908 	ldrsb	w8, [x8, x19]
   8:	35005d08 	cbnz	w8, 0xba8
   c:	aa1903e0 	mov	x0, x25
* 10:	b8404408 	ldr	w8, [x0], #4 <-- trapping instruction