Oops: general protection fault, probably for non-canonical address 0xdffffc0000000023: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]
CPU: 0 UID: 0 PID: 1136 Comm: kworker/u8:5 Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound netfs_write_collection_worker
RIP: 0010:folioq_folio_order include/linux/folio_queue.h:297 [inline]
RIP: 0010:folioq_folio_size include/linux/folio_queue.h:311 [inline]
RIP: 0010:iov_iter_folioq_revert lib/iov_iter.c:599 [inline]
RIP: 0010:iov_iter_revert lib/iov_iter.c:644 [inline]
RIP: 0010:iov_iter_revert+0x2ec/0x5a0 lib/iov_iter.c:611
Code: fd 1e 45 89 ec 0f 87 3b 02 00 00 4b 8d bc 26 00 01 00 00 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 08 38 d0 7f 08 84 c0 0f 85 02 02 00 00 47 0f b6 bc 26 00
RSP: 0018:ffffc90003fcf958 EFLAGS: 00010206
RAX: 0000000000000023 RBX: 0000000000000063 RCX: dffffc0000000000
RDX: 0000000000000006 RSI: ffffffff84bfa070 RDI: 000000000000011e
RBP: ffffc90003fcfa70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffc90003fcfa70 R12: 000000000000001e
R13: 000000000000001e R14: 0000000000000000 R15: ffff888145ab2750
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30106ff8 CR3: 000000002525e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 netfs_retry_write_stream fs/netfs/write_retry.c:44 [inline]
 netfs_retry_writes+0x163d/0x1a00 fs/netfs/write_retry.c:229
 netfs_collect_write_results fs/netfs/write_collect.c:352 [inline]
 netfs_write_collection_worker+0x23de/0x37c0 fs/netfs/write_collect.c:374
 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3b2/0x750 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folioq_folio_order include/linux/folio_queue.h:297 [inline]
RIP: 0010:folioq_folio_size include/linux/folio_queue.h:311 [inline]
RIP: 0010:iov_iter_folioq_revert lib/iov_iter.c:599 [inline]
RIP: 0010:iov_iter_revert lib/iov_iter.c:644 [inline]
RIP: 0010:iov_iter_revert+0x2ec/0x5a0 lib/iov_iter.c:611
Code: fd 1e 45 89 ec 0f 87 3b 02 00 00 4b 8d bc 26 00 01 00 00 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 08 38 d0 7f 08 84 c0 0f 85 02 02 00 00 47 0f b6 bc 26 00
RSP: 0018:ffffc90003fcf958 EFLAGS: 00010206
RAX: 0000000000000023 RBX: 0000000000000063 RCX: dffffc0000000000
RDX: 0000000000000006 RSI: ffffffff84bfa070 RDI: 000000000000011e
RBP: ffffc90003fcfa70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffc90003fcfa70 R12: 000000000000001e
R13: 000000000000001e R14: 0000000000000000 R15: ffff888145ab2750
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f496eda3d58 CR3: 0000000013252000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	45 89 ec             	mov    %r13d,%r12d
   3:	0f 87 3b 02 00 00    	ja     0x244
   9:	4b 8d bc 26 00 01 00 	lea    0x100(%r14,%r12,1),%rdi
  10:	00
  11:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  18:	fc ff df
  1b:	48 89 f8             	mov    %rdi,%rax
  1e:	48 89 fa             	mov    %rdi,%rdx
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	83 e2 07             	and    $0x7,%edx
* 28:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2c:	38 d0                	cmp    %dl,%al
  2e:	7f 08                	jg     0x38
  30:	84 c0                	test   %al,%al
  32:	0f 85 02 02 00 00    	jne    0x23a
  38:	47                   	rex.RXB
  39:	0f                   	.byte 0xf
  3a:	b6 bc                	mov    $0xbc,%dh
  3c:	26                   	es