find_entry called with index = 0
jfs_dirty_inode called on read-only volume
Is remount racy?
jfs_dirty_inode called on read-only volume
Is remount racy?
Unable to handle kernel paging request at virtual address dfff8000000000cf
KASAN: null-ptr-deref in range [0x0000000000000678-0x000000000000067f]
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff8000000000cf] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4897 Comm: syz.1.109 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
pc : txEnd+0xbc/0x4f0 fs/jfs/jfs_txnmgr.c:507
lr : txEnd+0x98/0x4f0 fs/jfs/jfs_txnmgr.c:505
sp : ffff800021897940
x29: ffff800021897940 x28: ffff700004312f3c x27: ffff800015606000
x26: 1ffff00002ac0d04 x25: dfff800000000000 x24: ffff800015606000
x23: ffff0000f6290160 x22: 0000000000000110 x21: ffff80001fd04000
x20: 0000000000000000 x19: 0000000000000678 x18: 0000000000000000
x17: ffff800018184000 x16: ffff8000082d3a08 x15: ffff800017c65000
x14: ffff0000db4e4218 x13: ffff0000db4e42e0 x12: 0000000000080000
x11: 0000000000035e96 x10: 0000000000000002 x9 : a9482fb6dee24100
x8 : 00000000000000cf x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff800021897880 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff800011a5d840 x0 : 0000000000000000
Call trace:
 JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
 txEnd+0xbc/0x4f0 fs/jfs/jfs_txnmgr.c:507
 jfs_mkdir+0x258/0x8b4 fs/jfs/namei.c:293
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4114
 do_mkdirat+0x1b4/0x3e0 fs/namei.c:4139
 __do_sys_mkdirat fs/namei.c:4154 [inline]
 __se_sys_mkdirat fs/namei.c:4152 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152
 __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: 97c0ce68 f9400268 9119e113 d343fe68 (38796908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97c0ce68 	bl	0xffffffffff0339a0
   4:	f9400268 	ldr	x8, [x19]
   8:	9119e113 	add	x19, x8, #0x678
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38796908 	ldrb	w8, [x8, x25] <-- trapping instruction