read_mapping_page failed!
ERROR: (device loop1): txAbort: 
9pnet: Insufficient options for proto=fd
==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0xcf8/0x2888 fs/jfs/jfs_dtree.c:-1
Read of size 1 at addr ffff0000e99cdc15 by task syz.1.316/5488

CPU: 0 PID: 5488 Comm: syz.1.316 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x78/0x30c mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xec/0x15c mm/kasan/report.c:451
 __asan_report_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
 dtSplitPage+0xcf8/0x2888 fs/jfs/jfs_dtree.c:-1
 dtSplitUp fs/jfs/jfs_dtree.c:1090 [inline]
 dtInsert+0xc3c/0x5634 fs/jfs/jfs_dtree.c:869
 jfs_symlink+0x66c/0xd78 fs/jfs/namei.c:1019
 vfs_symlink+0x238/0x3b0 fs/namei.c:4429
 do_symlinkat+0x184/0x5a8 fs/namei.c:4458
 __do_sys_symlinkat fs/namei.c:4475 [inline]
 __se_sys_symlinkat fs/namei.c:4472 [inline]
 __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4472
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Allocated by task 5488:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x74/0x408 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x1e0/0x3e4 mm/slub.c:3233
 jfs_alloc_inode+0x24/0x60 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x178/0x710 fs/inode.c:1308
 jfs_iget+0x30/0x374 fs/jfs/inode.c:29
 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1467
 __lookup_slow+0x24c/0x380 fs/namei.c:1663
 lookup_slow+0x5c/0x80 fs/namei.c:1680
 walk_component+0x2b0/0x3a8 fs/namei.c:1976
 link_path_walk+0x590/0xb8c fs/namei.c:-1
 path_parentat fs/namei.c:2502 [inline]
 __filename_parentat+0x1b0/0x510 fs/namei.c:2526
 filename_parentat fs/namei.c:2544 [inline]
 do_renameat2+0x224/0xcdc fs/namei.c:4901
 __do_sys_renameat2 fs/namei.c:5018 [inline]
 __se_sys_renameat2 fs/namei.c:5015 [inline]
 __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5015
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x110/0x8f0 kernel/rcu/tree.c:3087
 destroy_inode fs/inode.c:316 [inline]
 evict+0x748/0x810 fs/inode.c:662
 iput_final fs/inode.c:1769 [inline]
 iput+0x6c4/0x77c fs/inode.c:1795
 diFreeSpecial+0x78/0x100 fs/jfs/jfs_imap.c:552
 jfs_umount+0x1cc/0x328 fs/jfs/jfs_umount.c:91
 jfs_put_super+0x90/0x188 fs/jfs/super.c:194
 generic_shutdown_super+0x130/0x2f0 fs/super.c:475
 kill_block_super+0x70/0xdc fs/super.c:1427
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0xf8/0x118 fs/super.c:366
 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x12c/0x1e0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000e99cd340
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 21 bytes to the right of
 2240-byte region [ffff0000e99cd340, ffff0000e99cdc00)
The buggy address belongs to the page:
page:000000005239de6d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1299c8
head:000000005239de6d order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000d58d9301
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 fffffc0003a69800 0000000200000002 ffff0000c6cca300
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000d58d9301
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000e99cdb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000e99cdb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000e99cdc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                         ^
 ffff0000e99cdc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000e99cdd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
find_entry called with index = 0
read_mapping_page failed!
ERROR: (device loop1): txAbort: