loop5: detected capacity change from 0 to 64 ================================================================== BUG: KASAN: slab-out-of-bounds in hfs_asc2mac+0x467/0x9a0 fs/hfs/trans.c:133 Write of size 1 at addr ffff888064c7edce by task syz-executor.5/13454 CPU: 1 PID: 13454 Comm: syz-executor.5 Not tainted 6.1.0-rc8-syzkaller-00164-g4cee37b3a4e6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 hfs_asc2mac+0x467/0x9a0 fs/hfs/trans.c:133 hfs_cat_build_key+0x92/0x170 fs/hfs/catalog.c:28 hfs_lookup+0x1ab/0x2c0 fs/hfs/dir.c:31 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3711 do_filp_open+0x264/0x4f0 fs/namei.c:3741 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_open fs/open.c:1334 [inline] __se_sys_open fs/open.c:1330 [inline] __x64_sys_open+0x221/0x270 fs/open.c:1330 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8de288c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8de3649168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f8de29abf80 RCX: 00007f8de288c0d9 RDX: 0000000000000000 RSI: 0000000000006000 RDI: 0000000020000280 RBP: 00007f8de28e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff149d0acf R14: 00007f8de3649300 R15: 0000000000022000 Allocated by task 13454: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc+0xaf/0x1a0 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] hfs_find_init+0x8b/0x1e0 fs/hfs/bfind.c:21 hfs_lookup+0x105/0x2c0 fs/hfs/dir.c:28 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3711 do_filp_open+0x264/0x4f0 fs/namei.c:3741 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_open fs/open.c:1334 [inline] __se_sys_open fs/open.c:1330 [inline] __x64_sys_open+0x221/0x270 fs/open.c:1330 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481 kvfree_call_rcu+0x112/0x880 kernel/rcu/tree.c:3343 cfg80211_update_known_bss+0x16a/0x9e0 cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1730 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2499 [inline] cfg80211_inform_bss_frame_data+0x97b/0x2230 net/wireless/scan.c:2532 ieee80211_bss_info_update+0x7e9/0x1060 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+0x1907/0x2c00 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline] ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Second to last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481 kvfree_call_rcu+0x112/0x880 kernel/rcu/tree.c:3343 cfg80211_update_known_bss+0x16a/0x9e0 cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1730 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2499 [inline] cfg80211_inform_bss_frame_data+0x97b/0x2230 net/wireless/scan.c:2532 ieee80211_bss_info_update+0x7e9/0x1060 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+0x1907/0x2c00 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline] ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff888064c7ed80 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 78 bytes inside of 96-byte region [ffff888064c7ed80, ffff888064c7ede0) The buggy address belongs to the physical page: page:ffffea0001931f80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64c7e flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0000a36180 dead000000000005 ffff888012841780 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 3660, tgid 3660 (syz-executor.1), ts 158229634711, free_ts 158226922396 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4291 __alloc_pages+0x259/0x560 mm/page_alloc.c:5558 alloc_slab_page+0xbd/0x190 mm/slub.c:1794 allocate_slab+0x5e/0x4b0 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0x9e/0x1a0 mm/slab_common.c:968 kmalloc_array include/linux/slab.h:605 [inline] genl_family_rcv_msg_attrs_parse+0xa1/0x290 net/netlink/genetlink.c:560 genl_family_rcv_msg_doit net/netlink/genetlink.c:734 [inline] genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x7af/0xf20 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2540 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x46e/0x5f0 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 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+0x80c/0x8f0 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3483 tlb_batch_list_free mm/mmu_gather.c:75 [inline] tlb_finish_mmu+0x124/0x200 mm/mmu_gather.c:364 exit_mmap+0x275/0x630 mm/mmap.c:3096 __mmput+0x114/0x3b0 kernel/fork.c:1185 exit_mm+0x1f5/0x2d0 kernel/exit.c:516 do_exit+0x5e7/0x2070 kernel/exit.c:807 do_group_exit+0x1fd/0x2b0 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888064c7ec80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff888064c7ed00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff888064c7ed80: 00 00 00 00 00 00 00 00 00 06 fc fc fc fc fc fc ^ ffff888064c7ee00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc ffff888064c7ee80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================