==================================================================
BUG: KASAN: slab-use-after-free in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
Write of size 32 at addr ffff0000d39230c0 by task syz-executor.4/7002

CPU: 0 PID: 7002 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x198/0x538 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189
 __asan_memcpy+0x54/0x84 mm/kasan/shadow.c:106
 diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255
 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline]
 jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Allocated by task 26:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3798 [inline]
 slab_alloc_node mm/slub.c:3845 [inline]
 kmem_cache_alloc_node+0x224/0x418 mm/slub.c:3888
 __alloc_skb+0x1e0/0x420 net/core/skbuff.c:658
 alloc_skb include/linux/skbuff.h:1313 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
 nsim_dev_trap_report_work+0x1f0/0x924 drivers/net/netdevsim/dev.c:850
 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3429
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Freed by task 26:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:579
 poison_slab_object+0x124/0x18c mm/kasan/common.c:240
 __kasan_slab_free+0x3c/0x70 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kmem_cache_free+0x168/0x3f0 mm/slub.c:4344
 kfree_skbmem+0x15c/0x1ec
 __kfree_skb net/core/skbuff.c:1217 [inline]
 consume_skb+0xc4/0x198 net/core/skbuff.c:1432
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
 nsim_dev_trap_report_work+0x628/0x924 drivers/net/netdevsim/dev.c:850
 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3429
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

The buggy address belongs to the object at ffff0000d3923000
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 192 bytes inside of
 freed 240-byte region [ffff0000d3923000, ffff0000d39230f0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113923
anon flags: 0x5ffc00000000800(slab|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000800 ffff0000c1bc4780 0000000000000000 dead000000000001
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d3922f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d3923000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d3923080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
                                           ^
 ffff0000d3923100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
 ffff0000d3923180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0

ERROR: (device loop4): remounting filesystem as read-only