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 4026 at addr ffff88804dc31800 by task syz.0.0/5107 CPU: 0 UID: 0 PID: 5107 Comm: syz.0.0 Not tainted 6.12.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 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_user_setxattr+0x40/0x60 fs/hfsplus/xattr_user.c:30 __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] path_setxattr+0x37e/0x4d0 fs/xattr.c:658 __do_sys_setxattr fs/xattr.c:676 [inline] __se_sys_setxattr fs/xattr.c:672 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:672 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: 0033:0x7f361a77dff9 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:00007f361b5fc038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f361a935f80 RCX: 00007f361a77dff9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000040 RBP: 00007f361a7f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f361a935f80 R15: 00007fffa0c26d68 Allocated by task 5107: 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:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:257 [inline] __do_kmalloc_node mm/slub.c:4264 [inline] __kmalloc_noprof+0x1fc/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [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_user_setxattr+0x40/0x60 fs/hfsplus/xattr_user.c:30 __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] path_setxattr+0x37e/0x4d0 fs/xattr.c:658 __do_sys_setxattr fs/xattr.c:676 [inline] __se_sys_setxattr fs/xattr.c:672 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:672 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 ffff88804dc31800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of allocated 536-byte region [ffff88804dc31800, ffff88804dc31a18) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4dc30 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000 head: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000 head: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000 head: 04fff00000000002 ffffea0001370c01 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 30, tgid 30 (kworker/u4:2), ts 60359442766, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x3045/0x3190 mm/page_alloc.c:3457 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x120 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x25a/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] ieee802_11_parse_elems_full+0xdb/0x2880 net/mac80211/parse.c:958 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2383 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2390 [inline] ieee80211_inform_bss+0x15f/0x1080 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xec1/0x2090 net/wireless/scan.c:2333 cfg80211_inform_bss_data+0x3ce/0x5e70 net/wireless/scan.c:3184 cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3279 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline] ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606 page_owner free stack trace missing Memory state around the buggy address: ffff88804dc31900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88804dc31980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88804dc31a00: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88804dc31a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88804dc31b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================