ERROR: (device loop4): remounting filesystem as read-only
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: 6842 Comm: syz.4.589 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
pc : txEnd+0xbc/0x4e8 fs/jfs/jfs_txnmgr.c:507
lr : txEnd+0x98/0x4e8 fs/jfs/jfs_txnmgr.c:505
sp : ffff8000209876a0
x29: ffff8000209876a0 x28: 1fffe0001ca0408b x27: ffff8000157c6000
x26: 1ffff00002af8d64 x25: dfff800000000000 x24: ffff700004130ee0
x23: ffff800011efef60 x22: 0000000000000110 x21: ffff80001fe59000
x20: 0000000000000000 x19: 0000000000000678 x18: ffff800011b8bf60
x17: 1fffe00033eac97e x16: ffff8000082d91a4 x15: 0000000000000002
x14: 0000000000000001 x13: 1ffff00003fcb206 x12: 0000000000080000
x11: 000000000001b64a x10: 0000000000000002 x9 : 7cef8a2ce3bbc900
x8 : 00000000000000cf x7 : ffff8000082b1a54 x6 : 0000000000000000
x5 : ffff8000209875e0 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff800011b8da80 x0 : 0000000000000000
Call trace:
 JFS_SBI fs/jfs/jfs_incore.h:217 [inline]
 txEnd+0xbc/0x4e8 fs/jfs/jfs_txnmgr.c:507
 jfs_set_acl+0x250/0x310 fs/jfs/acl.c:124
 set_posix_acl fs/posix_acl.c:1160 [inline]
 posix_acl_xattr_set+0x2f8/0x394 fs/posix_acl.c:1189
 __vfs_setxattr+0x384/0x3a0 fs/xattr.c:182
 __vfs_setxattr_noperm+0x120/0x564 fs/xattr.c:216
 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
 vfs_setxattr+0x158/0x2ac fs/xattr.c:309
 do_setxattr fs/xattr.c:594 [inline]
 setxattr+0x258/0x2d8 fs/xattr.c:617
 path_setxattr+0x130/0x260 fs/xattr.c:636
 __do_sys_setxattr fs/xattr.c:652 [inline]
 __se_sys_setxattr fs/xattr.c:648 [inline]
 __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:648
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 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: 97c075d6 f9400268 9119e113 d343fe68 (38796908) 
---[ end trace 0000000000000000 ]---
pstore: crypto_comp_compress failed, ret = -22!
----------------
Code disassembly (best guess):
   0:	97c075d6 	bl	0xffffffffff01d758
   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