loop3: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:393 [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+0x390/0x600 fs/hfsplus/bnode.c:70 Write of size 4026 at addr ffff88807760c000 by task syz-executor.3/20656 CPU: 0 PID: 20656 Comm: syz-executor.3 Not tainted 6.1.81-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __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:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 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] hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] hfsplus_bnode_read_key+0x390/0x600 fs/hfsplus/bnode.c:70 hfsplus_brec_insert+0x6e6/0xdd0 fs/hfsplus/brec.c:141 hfsplus_create_attr+0x49a/0x630 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x6fa/0x22c0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_security_setxattr+0x3c/0x50 fs/hfsplus/xattr_security.c:31 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x250/0x2b0 fs/xattr.c:617 path_setxattr+0x1bc/0x2a0 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:655 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f076f27dda9 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:00007f07700140c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f076f3abf80 RCX: 00007f076f27dda9 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000040 RBP: 00007f076f2ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f076f3abf80 R15: 00007ffc64a7c9c8 Allocated by task 20656: 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:955 [inline] __kmalloc+0xb2/0x230 mm/slab_common.c:968 kmalloc include/linux/slab.h:561 [inline] hfsplus_find_init+0x81/0x1c0 fs/hfsplus/bfind.c:21 hfsplus_create_attr+0x15d/0x630 fs/hfsplus/attributes.c:216 __hfsplus_setxattr+0x6fa/0x22c0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_security_setxattr+0x3c/0x50 fs/hfsplus/xattr_security.c:31 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x250/0x2b0 fs/xattr.c:617 path_setxattr+0x1bc/0x2a0 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:655 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844 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:307 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 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844 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:307 The buggy address belongs to the object at ffff88807760c000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of 1024-byte region [ffff88807760c000, ffff88807760c400) The buggy address belongs to the physical page: page:ffffea0001dd8200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x77608 head:ffffea0001dd8200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888012441dc0 raw: 0000000000000000 0000000080100010 00000001ffffffff 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 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3553, tgid 3547 (syz-fuzzer), ts 137864222220, free_ts 137242183376 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5545 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 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node_track_caller+0xa0/0x220 mm/slab_common.c:975 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x135/0x670 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1276 [inline] __tcp_send_ack+0x9a/0x600 net/ipv4/tcp_output.c:4020 tcp_cleanup_rbuf net/ipv4/tcp.c:1650 [inline] tcp_recvmsg_locked+0x1b77/0x2450 net/ipv4/tcp.c:2670 tcp_recvmsg+0x258/0x920 net/ipv4/tcp.c:2700 inet_recvmsg+0x13b/0x250 net/ipv4/af_inet.c:888 sock_recvmsg_nosec net/socket.c:1022 [inline] sock_recvmsg net/socket.c:1040 [inline] sock_read_iter+0x3b2/0x4b0 net/socket.c:1121 call_read_iter include/linux/fs.h:2259 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7de/0xbe0 fs/read_write.c:470 ksys_read+0x19c/0x2c0 fs/read_write.c:613 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3453 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_fclone include/linux/skbuff.h:1326 [inline] tcp_stream_alloc_skb+0x3e/0x310 net/ipv4/tcp.c:868 tcp_sendmsg_locked+0xda6/0x4100 net/ipv4/tcp.c:1331 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1489 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 Memory state around the buggy address: ffff88807760c100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807760c180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807760c200: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807760c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807760c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================