loop0: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:423 [inline] BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read_key+0x394/0x610 fs/hfsplus/bnode.c:70 Write of size 3970 at addr ffff88806b72f000 by task syz-executor.0/5484 CPU: 1 UID: 0 PID: 5484 Comm: syz-executor.0 Not tainted 6.10.0-rc7-next-20240710-syzkaller-g523b23f0bee3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 memcpy_from_page include/linux/highmem.h:423 [inline] hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] hfsplus_bnode_read_key+0x394/0x610 fs/hfsplus/bnode.c:70 hfsplus_brec_insert+0x6ea/0xde0 fs/hfsplus/brec.c:141 hfsplus_create_attr+0x4a2/0x640 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x6fe/0x22d0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb0/0xe0 fs/hfsplus/xattr.c:432 hfsplus_security_setxattr+0x40/0x60 fs/hfsplus/xattr_security.c:31 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] setxattr+0x25d/0x2f0 fs/xattr.c:652 do_setxattrat+0x21f/0x300 fs/xattr.c:678 __do_sys_setxattr fs/xattr.c:718 [inline] __se_sys_setxattr fs/xattr.c:714 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:714 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f67a187dda9 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:00007f67a25950c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f67a19abf80 RCX: 00007f67a187dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000240 RBP: 00007f67a18ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f67a19abf80 R15: 00007ffdd78e9558 Allocated by task 5484: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4172 [inline] __kmalloc_noprof+0x1fc/0x400 mm/slub.c:4184 kmalloc_noprof include/linux/slab.h:685 [inline] hfsplus_find_init+0x85/0x1c0 fs/hfsplus/bfind.c:21 hfsplus_create_attr+0x161/0x640 fs/hfsplus/attributes.c:216 __hfsplus_setxattr+0x6fe/0x22d0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb0/0xe0 fs/hfsplus/xattr.c:432 hfsplus_security_setxattr+0x40/0x60 fs/hfsplus/xattr_security.c:31 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] setxattr+0x25d/0x2f0 fs/xattr.c:652 do_setxattrat+0x21f/0x300 fs/xattr.c:678 __do_sys_setxattr fs/xattr.c:718 [inline] __se_sys_setxattr fs/xattr.c:714 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:714 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88806b72f000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of allocated 536-byte region [ffff88806b72f000, ffff88806b72f218) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806b72b000 pfn:0x6b728 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 00fff00000000040 ffff888015041dc0 ffffea0000bcf800 dead000000000002 raw: ffff88806b72b000 0000000080100009 00000001fdffffff 0000000000000000 head: 00fff00000000040 ffff888015041dc0 ffffea0000bcf800 dead000000000002 head: ffff88806b72b000 0000000080100009 00000001fdffffff 0000000000000000 head: 00fff00000000003 ffffea0001adca01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 35, tgid 35 (kworker/u8:2), ts 53559378860, free_ts 15420383871 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493 prep_new_page mm/page_alloc.c:1501 [inline] get_page_from_freelist+0x2ccb/0x2d80 mm/page_alloc.c:3480 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4738 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2327 allocate_slab+0x5a/0x2f0 mm/slub.c:2490 new_slab mm/slub.c:2543 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3729 __slab_alloc+0x58/0xa0 mm/slub.c:3819 __slab_alloc_node mm/slub.c:3872 [inline] slab_alloc_node mm/slub.c:4039 [inline] __do_kmalloc_node mm/slub.c:4171 [inline] __kmalloc_noprof+0x25a/0x400 mm/slub.c:4184 kmalloc_noprof include/linux/slab.h:685 [inline] kzalloc_noprof include/linux/slab.h:807 [inline] neigh_alloc net/core/neighbour.c:494 [inline] ___neigh_create+0x691/0x2470 net/core/neighbour.c:648 ip6_finish_output2+0x1631/0x1680 net/ipv6/ip6_output.c:128 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xab2/0x1380 net/ipv6/ndisc.c:509 ndisc_send_ns+0xcc/0x160 net/ipv6/ndisc.c:667 addrconf_dad_work+0xb45/0x16f0 net/ipv6/addrconf.c:4281 process_one_work kernel/workqueue.c:3228 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3309 worker_thread+0x86d/0xd40 kernel/workqueue.c:3387 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1094 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2644 free_contig_range+0x9e/0x160 mm/page_alloc.c:6694 destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1017 debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397 do_one_initcall+0x248/0x880 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 kernel_init_freeable+0x435/0x5d0 init/main.c:1578 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff88806b72f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806b72f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88806b72f200: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88806b72f280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88806b72f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================