loop4: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff88807c5cbee0 by task syz-executor.4/6833 CPU: 0 PID: 6833 Comm: syz-executor.4 Not tainted 5.15.156-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:47 [inline] hfsplus_bnode_dump+0x3f7/0x7c0 fs/hfsplus/bnode.c:328 hfsplus_brec_remove+0x428/0x4e0 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x271/0x450 fs/hfsplus/attributes.c:299 hfsplus_delete_attr+0x34f/0x4a0 fs/hfsplus/attributes.c:345 hfsplus_removexattr fs/hfsplus/xattr.c:794 [inline] __hfsplus_setxattr+0x7f3/0x22c0 fs/hfsplus/xattr.c:275 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x3c/0x50 fs/hfsplus/xattr_user.c:30 __vfs_removexattr+0x3ce/0x410 fs/xattr.c:470 __vfs_removexattr_locked+0x1fe/0x410 fs/xattr.c:505 vfs_removexattr+0xff/0x2a0 fs/xattr.c:527 removexattr fs/xattr.c:857 [inline] path_removexattr+0x22a/0x320 fs/xattr.c:871 __do_sys_removexattr fs/xattr.c:885 [inline] __se_sys_removexattr fs/xattr.c:882 [inline] __x64_sys_removexattr+0x5c/0x70 fs/xattr.c:882 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1c703caea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1c6e91c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000c5 RAX: ffffffffffffffda RBX: 00007f1c704f9050 RCX: 00007f1c703caea9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000040 RBP: 00007f1c704174a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1c704f9050 R15: 00007ffd6890e9f8 Allocated by task 6833: 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_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x168/0x300 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] __hfs_bnode_create+0xf9/0xbb0 fs/hfsplus/bnode.c:416 hfsplus_bnode_find+0x22e/0xe80 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x17f/0x570 fs/hfsplus/bfind.c:183 hfsplus_attr_exists+0x15b/0x1c0 fs/hfsplus/attributes.c:182 __hfsplus_setxattr+0x453/0x22c0 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x3c/0x50 fs/hfsplus/xattr_user.c:30 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x27e/0x2e0 fs/xattr.c:611 path_setxattr+0x1bc/0x2a0 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88807c5cbe00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 32 bytes to the right of 192-byte region [ffff88807c5cbe00, ffff88807c5cbec0) The buggy address belongs to the page: page:ffffea0001f172c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7c5cb flags: 0xfff80000000200(slab|node=0|zone=1|lastcpupid=0xfff) raw: 00fff80000000200 0000000000000000 0000000300000001 ffff888011c41a00 raw: 0000000000000000 0000000000100010 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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 6043, ts 153356676457, free_ts 146893827518 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423 __alloc_pages_node include/linux/gfp.h:570 [inline] alloc_slab_page mm/slub.c:1777 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xb1/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] __kmalloc_node+0x1fa/0x390 mm/slub.c:4451 kmalloc_array_node include/linux/slab.h:684 [inline] kcalloc_node include/linux/slab.h:689 [inline] memcg_alloc_page_obj_cgroups+0x7e/0x120 mm/memcontrol.c:2836 memcg_slab_post_alloc_hook mm/slab.h:313 [inline] slab_post_alloc_hook+0xb6/0x380 mm/slab.h:526 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 __d_alloc+0x2a/0x700 fs/dcache.c:1745 d_alloc+0x48/0x1d0 fs/dcache.c:1824 lookup_one_qstr_excl+0xca/0x240 fs/namei.c:1559 filename_create+0x293/0x530 fs/namei.c:3836 do_mkdirat+0xb3/0x520 fs/namei.c:4080 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0xe3/0x100 mm/slub.c:3506 qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] kmem_cache_alloc_node+0x121/0x2c0 mm/slub.c:3256 __alloc_skb+0xdd/0x590 net/core/skbuff.c:415 alloc_skb include/linux/skbuff.h:1167 [inline] nlmsg_new include/net/netlink.h:953 [inline] inet6_netconf_notify_devconf+0xf8/0x1b0 net/ipv6/addrconf.c:583 __addrconf_sysctl_unregister net/ipv6/addrconf.c:7122 [inline] addrconf_sysctl_unregister net/ipv6/addrconf.c:7146 [inline] addrconf_ifdown+0x1879/0x1bb0 net/ipv6/addrconf.c:3930 addrconf_notify+0x432/0xf30 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2018 [inline] call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers net/core/dev.c:2044 [inline] unregister_netdevice_many+0xf1b/0x18f0 net/core/dev.c:11093 default_device_exit_batch+0x390/0x3f0 net/core/dev.c:11626 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:596 Memory state around the buggy address: ffff88807c5cbd80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88807c5cbe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807c5cbe80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807c5cbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807c5cbf80: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================