Unable to handle kernel paging request at virtual address dfff80000000000e
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
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, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff80000000000e] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6779 Comm: syz.0.24 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 23400005 (nzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : kasan_byte_accessible+0x10/0x20 mm/kasan/generic.c:199
lr : __kasan_check_byte+0x20/0x54 mm/kasan/common.c:567
sp : ffff8000a3825dd0
x29: ffff8000a3825dd0 x28: ffff80008f7c1000 x27: ffff0000ccd63d00
x26: bb87800082aed494 x25: 0000000000000000 x24: 0000000000000001
x23: 0000000000000000 x22: 0000000000000070 x21: 0000000000000070
x20: 0000000000000000 x19: ffff800082aed494 x18: 1fffe000337a0688
x17: ffff80008f7be000 x16: ffff80008b007230 x15: 0000000000000005
x14: 1ffff00014704be4 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 0000000000000003 x9 : dfff800000000000
x8 : 000000000000000e x7 : 0000000000000000 x6 : ffff8000828cfe4c
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffff800082aed494 x0 : 0000000000000070
Call trace:
 kasan_mem_to_shadow include/linux/kasan.h:64 [inline] (P)
 kasan_byte_accessible+0x10/0x20 mm/kasan/generic.c:199 (P)
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire+0xb0/0x2e0 kernel/locking/lockdep.c:5842
 six_lock_ip_waiter+0xac/0x174 fs/bcachefs/six.c:550
 six_lock_ip fs/bcachefs/six.h:255 [inline]
 six_lock_ip_intent fs/bcachefs/six.h:368 [inline]
 six_lock_intent+0xb8/0x104 fs/bcachefs/six.h:368
 bkey_cached_alloc fs/bcachefs/btree_key_cache.c:182 [inline]
 btree_key_cache_create fs/bcachefs/btree_key_cache.c:231 [inline]
 btree_key_cache_fill+0x3e0/0x21dc fs/bcachefs/btree_key_cache.c:344
 bch2_btree_path_traverse_cached+0x8d8/0xcb4 fs/bcachefs/btree_key_cache.c:399
 bch2_btree_path_traverse_one+0x2d0/0x1f0c fs/bcachefs/btree_iter.c:1179
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:250 [inline]
 bch2_btree_iter_peek_slot+0x598/0x2c24 fs/bcachefs/btree_iter.c:2828
 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:632 [inline]
 bch2_bkey_get_iter+0xdc/0x194 fs/bcachefs/btree_iter.h:646
 bch2_trans_start_alloc_update_noupdate+0x60/0x11c fs/bcachefs/alloc_background.c:471
 __bch2_trans_mark_metadata_bucket fs/bcachefs/buckets.c:994 [inline]
 bch2_trans_mark_metadata_bucket+0x1c0/0xe68 fs/bcachefs/buckets.c:1091
 bch2_trans_mark_metadata_sectors fs/bcachefs/buckets.c:1108 [inline]
 __bch2_trans_mark_dev_sb fs/bcachefs/buckets.c:1148 [inline]
 bch2_trans_mark_dev_sb+0x318/0x67c fs/bcachefs/buckets.c:1176
 bch2_trans_mark_dev_sbs_flags+0x414/0x47c fs/bcachefs/buckets.c:1186
 bch2_trans_mark_dev_sbs+0x24/0x34 fs/bcachefs/buckets.c:1198
 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:484 [inline]
 __bch2_run_recovery_passes+0x2b8/0xd54 fs/bcachefs/recovery_passes.c:539
 bch2_run_recovery_passes+0x174/0x1f4 fs/bcachefs/recovery_passes.c:610
 bch2_fs_recovery+0x1c34/0x2fb4 fs/bcachefs/recovery.c:1016
 bch2_fs_start+0x940/0xbec fs/bcachefs/super.c:1213
 bch2_fs_get_tree+0x880/0x107c fs/bcachefs/fs.c:2488
 vfs_get_tree+0x90/0x28c fs/super.c:1815
 do_new_mount+0x278/0x7f4 fs/namespace.c:3805
 path_mount+0x5b4/0xde0 fs/namespace.c:4120
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount fs/namespace.c:4321 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4321
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: d503245f d343fc08 d2d00009 f2fbffe9 (38696908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d503245f 	bti	c
   4:	d343fc08 	lsr	x8, x0, #3
   8:	d2d00009 	mov	x9, #0x800000000000        	// #140737488355328
   c:	f2fbffe9 	movk	x9, #0xdfff, lsl #48
* 10:	38696908 	ldrb	w8, [x8, x9] <-- trapping instruction