==================================================================
BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:393 [inline]
BUG: KASAN: slab-out-of-bounds in hfs_bnode_read fs/hfs/bnode.c:35 [inline]
BUG: KASAN: slab-out-of-bounds in hfs_bnode_read_key+0x310/0x440 fs/hfs/bnode.c:70
Write of size 94 at addr ffff88807821a900 by task syz.4.1697/13069

CPU: 0 PID: 13069 Comm: syz.4.1697 Not tainted 6.1.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:427
 kasan_report+0x136/0x160 mm/kasan/report.c:531
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 memcpy+0x3c/0x60 mm/kasan/shadow.c:66
 memcpy_from_page include/linux/highmem.h:393 [inline]
 hfs_bnode_read fs/hfs/bnode.c:35 [inline]
 hfs_bnode_read_key+0x310/0x440 fs/hfs/bnode.c:70
 hfs_brec_insert+0x7ef/0xbd0 fs/hfs/brec.c:159
 hfs_cat_create+0x419/0xa60 fs/hfs/catalog.c:118
 hfs_create+0x62/0xd0 fs/hfs/dir.c:202
 vfs_create+0x306/0x490 fs/namei.c:3184
 do_mknodat+0x338/0x5a0 fs/namei.c:4035
 __do_sys_mknod fs/namei.c:4068 [inline]
 __se_sys_mknod fs/namei.c:4066 [inline]
 __x64_sys_mknod+0x8a/0xa0 fs/namei.c:4066
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd6fdb85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd6fe8e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fd6fdd76160 RCX: 00007fd6fdb85d29
RDX: 0000000000000709 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fd6fdc01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd6fdd76160 R15: 00007ffe9f6216c8
 </TASK>

Allocated by task 13069:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:936 [inline]
 __kmalloc+0xb2/0x230 mm/slab_common.c:949
 kmalloc include/linux/slab.h:568 [inline]
 hfs_find_init+0x8c/0x1e0 fs/hfs/bfind.c:21
 hfs_cat_create+0x17e/0xa60 fs/hfs/catalog.c:96
 hfs_create+0x62/0xd0 fs/hfs/dir.c:202
 vfs_create+0x306/0x490 fs/namei.c:3184
 do_mknodat+0x338/0x5a0 fs/namei.c:4035
 __do_sys_mknod fs/namei.c:4068 [inline]
 __se_sys_mknod fs/namei.c:4066 [inline]
 __x64_sys_mknod+0x8a/0xa0 fs/namei.c:4066
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3401
 cfg80211_update_known_bss+0x16b/0x9e0
 cfg80211_bss_update+0x187/0x2280 net/wireless/scan.c:1817
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2476 [inline]
 cfg80211_inform_bss_frame_data+0xae4/0x1680 net/wireless/scan.c:2509
 ieee80211_bss_info_update+0x847/0xf00 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1962/0x2dd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1668 [inline]
 ieee80211_iface_work+0x7aa/0xce0 net/mac80211/iface.c:1722
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3401
 cfg80211_update_known_bss+0x16b/0x9e0
 cfg80211_bss_update+0x187/0x2280 net/wireless/scan.c:1817
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2476 [inline]
 cfg80211_inform_bss_frame_data+0xae4/0x1680 net/wireless/scan.c:2509
 ieee80211_bss_info_update+0x847/0xf00 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1962/0x2dd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1668 [inline]
 ieee80211_iface_work+0x7aa/0xce0 net/mac80211/iface.c:1722
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff88807821a900
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
 96-byte region [ffff88807821a900, ffff88807821a960)

The buggy address belongs to the physical page:
page:ffffea0001e08680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7821a
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea00009bc000 dead000000000008 ffff888017c41780
raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 4336, tgid 4336 (kworker/1:6), ts 77745708899, free_ts 77680574457
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2532
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4328
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5605
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:990 [inline]
 nsim_fib_event_nb+0xd8/0x1070 drivers/net/netdevsim/fib.c:1043
 notifier_call_chain kernel/notifier.c:87 [inline]
 atomic_notifier_call_chain+0x17c/0x2c0 kernel/notifier.c:225
 call_fib_notifiers+0x2d/0x60 net/core/fib_notifier.c:35
 call_fib6_entry_notifiers net/ipv6/ip6_fib.c:402 [inline]
 fib6_add_rt2node net/ipv6/ip6_fib.c:1228 [inline]
 fib6_add+0x1b66/0x3c80 net/ipv6/ip6_fib.c:1485
 __ip6_ins_rt net/ipv6/route.c:1311 [inline]
 ip6_ins_rt+0x102/0x170 net/ipv6/route.c:1321
 __ipv6_ifa_notify+0x5bc/0x11d0 net/ipv6/addrconf.c:6204
 ipv6_ifa_notify net/ipv6/addrconf.c:6243 [inline]
 addrconf_dad_completed+0x17d/0xcb0 net/ipv6/addrconf.c:4260
 addrconf_dad_work+0xd8e/0x16b0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare mm/page_alloc.c:1509 [inline]
 free_unref_page_prepare+0x12a6/0x15b0 mm/page_alloc.c:3384
 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3479
 free_slab mm/slub.c:2031 [inline]
 discard_slab mm/slub.c:2037 [inline]
 __unfreeze_partials+0x1b7/0x210 mm/slub.c:2586
 put_cpu_partial+0x17b/0x250 mm/slub.c:2662
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 kmem_cache_alloc_node+0x136/0x310 mm/slub.c:3443
 __alloc_skb+0xde/0x670 net/core/skbuff.c:505
 alloc_skb include/linux/skbuff.h:1271 [inline]
 nlmsg_new include/net/netlink.h:991 [inline]
 netlink_ack+0x392/0x1290 net/netlink/af_netlink.c:2430
 netlink_rcv_skb+0x24a/0x410 net/netlink/af_netlink.c:2499
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x480/0x600 net/socket.c:2153
 __do_sys_sendto net/socket.c:2165 [inline]
 __se_sys_sendto net/socket.c:2161 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2161

Memory state around the buggy address:
 ffff88807821a800: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
 ffff88807821a880: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88807821a900: 00 00 00 00 00 00 00 00 00 06 fc fc fc fc fc fc
                                              ^
 ffff88807821a980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff88807821aa00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
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