bcachefs (loop0): marking superblocks
Unable to handle kernel paging request at virtual address fffffdffbffffffd
KASAN: maybe wild-memory-access in range [0x0003effdffffffe8-0x0003effdffffffef]
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, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020730f000
[fffffdffbffffffd] pgd=0000000000000000, p4d=100000023ea67403, pud=100000010308d403, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 7762 Comm: syz.0.56 Not tainted 6.16.0-rc2-syzkaller-00009-g9aa9b43d689e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : rcu_segcblist_restempty kernel/rcu/rcu_segcblist.h:105 [inline]
pc : rcu_segcblist_advance+0x84/0x368 kernel/rcu/rcu_segcblist.c:474
lr : srcu_gp_start_if_needed+0x568/0x10d0 kernel/rcu/srcutree.c:1316
sp : ffff80009bc66230
x29: ffff80009bc66230 x28: fffffdffbf76b140 x27: 00000000000000c0
x26: dfff800000000000 x25: 1fffffbff7eed631 x24: dfff800000000000
x23: ffff0000ee2a6980 x22: fffffdffbffffffd x21: fffffffffffffe70
x20: fffffdffbf76b188 x19: fffffdffbf76b180 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80008aecb76c x15: ffff70001378cc3c
x14: 1ffff0001378cc3c x13: 0000000000000004 x12: ffffffffffffffff
x11: 00000000951445a9 x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff8000805a4df0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008af95180
x2 : 0000000000000008 x1 : fffffffffffffe70 x0 : fffffdffbf76b180
Call trace:
 rcu_segcblist_restempty kernel/rcu/rcu_segcblist.h:105 [inline] (P)
 rcu_segcblist_advance+0x84/0x368 kernel/rcu/rcu_segcblist.c:474 (P)
 srcu_gp_start_if_needed+0x568/0x10d0 kernel/rcu/srcutree.c:1316
 __call_srcu kernel/rcu/srcutree.c:1389 [inline]
 call_srcu+0xc8/0xe0 kernel/rcu/srcutree.c:1416
 __call_rcu+0x38/0x60 fs/bcachefs/rcu_pending.c:76
 __rcu_pending_enqueue fs/bcachefs/rcu_pending.c:498 [inline]
 rcu_pending_enqueue+0x624/0x740 fs/bcachefs/rcu_pending.c:531
 bkey_cached_free_noassert fs/bcachefs/btree_key_cache.c:115 [inline]
 bkey_cached_free+0xfc/0x250 fs/bcachefs/btree_key_cache.c:129
 bch2_btree_key_cache_drop+0x110/0x68c fs/bcachefs/btree_key_cache.c:637
 bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:782 [inline]
 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:851 [inline]
 __bch2_trans_commit+0x4b54/0x6198 fs/bcachefs/btree_trans_commit.c:1079
 bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline]
 bch2_trans_mark_metadata_bucket+0x484/0xe68 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_fs_initialize+0xa0c/0x1138 fs/bcachefs/recovery.c:1208
 bch2_fs_start+0x904/0xbc0 fs/bcachefs/super.c:1204
 bch2_fs_get_tree+0x890/0x1048 fs/bcachefs/fs.c:2489
 vfs_get_tree+0x90/0x28c fs/super.c:1802
 do_new_mount+0x228/0x814 fs/namespace.c:3885
 path_mount+0x5b4/0xde0 fs/namespace.c:4209
 do_mount fs/namespace.c:4222 [inline]
 __do_sys_mount fs/namespace.c:4433 [inline]
 __se_sys_mount fs/namespace.c:4410 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4410
 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 38786908 34000068 aa1603e0 9419c227 (f94002c8) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	38786908 	ldrb	w8, [x8, x24]
   4:	34000068 	cbz	w8, 0x10
   8:	aa1603e0 	mov	x0, x22
   c:	9419c227 	bl	0x6708a8
* 10:	f94002c8 	ldr	x8, [x22] <-- trapping instruction