loop0: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 128 in B*Tree hfsplus: request for non-existent node 128 in B*Tree ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0xc0/0x2a0 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff888034a743c0 by task syz.0.0/5324 CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00346-gafa9a6f4f574 #0 PREEMPT(full) 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_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 hfsplus_bnode_read+0xc0/0x2a0 fs/hfsplus/bnode.c:32 hfsplus_bnode_dump+0x300/0x450 fs/hfsplus/bnode.c:-1 hfsplus_brec_remove+0x480/0x550 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1d4/0x360 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x277/0x410 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x92c/0xd20 fs/hfsplus/catalog.c:425 hfsplus_file_release+0x18f/0x3e0 fs/hfsplus/inode.c:235 __fput+0x449/0xa70 fs/file_table.c:465 fput_close_sync+0x119/0x200 fs/file_table.c:570 __do_sys_close fs/open.c:1589 [inline] __se_sys_close fs/open.c:1574 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1574 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb03158e929 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:00007fb0323a5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007fb0317b5fa0 RCX: 00007fb03158e929 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fb031610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb0317b5fa0 R15: 00007ffc19ae6f58 Allocated by task 5324: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4328 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] __hfs_bnode_create+0xf3/0x810 fs/hfsplus/bnode.c:415 hfsplus_bnode_find+0x224/0xd20 fs/hfsplus/bnode.c:492 hfsplus_brec_find+0x15c/0x500 fs/hfsplus/bfind.c:172 __hfsplus_getxattr+0x301/0x7e0 fs/hfsplus/xattr.c:520 hfsplus_getxattr+0x10d/0x180 fs/hfsplus/xattr.c:588 vfs_getxattr_alloc+0x42b/0x580 fs/xattr.c:393 ima_read_xattr+0x38/0x60 security/integrity/ima/ima_appraise.c:230 process_measurement+0xfd7/0x1a40 security/integrity/ima/ima_main.c:366 ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:613 security_file_post_open+0xbb/0x290 security/security.c:3130 do_open fs/namei.c:3898 [inline] path_openat+0x2f26/0x3830 fs/namei.c:4055 do_filp_open+0x1fa/0x410 fs/namei.c:4082 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888034a74300 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 40 bytes to the right of allocated 152-byte region [ffff888034a74300, ffff888034a74398) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34a74 ksm flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88801a4413c0 ffffea0000d9b540 dead000000000003 raw: 0000000000000000 0000000080100010 00000000f5000000 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 0x52c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 11334603758, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_slab_page mm/slub.c:2453 [inline] allocate_slab+0x65/0x3b0 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kvmalloc_node_noprof+0x429/0x5f0 mm/slub.c:5015 sbitmap_init_node+0x2c9/0x630 lib/sbitmap.c:132 blk_mq_alloc_hctx block/blk-mq.c:4028 [inline] blk_mq_alloc_and_init_hctx+0x4ea/0xd60 block/blk-mq.c:4500 __blk_mq_realloc_hw_ctxs+0x169/0x400 block/blk-mq.c:4531 blk_mq_realloc_hw_ctxs block/blk-mq.c:4558 [inline] blk_mq_init_allocated_queue+0x400/0x1490 block/blk-mq.c:4590 blk_mq_alloc_queue block/blk-mq.c:4400 [inline] __blk_mq_alloc_disk+0x1f6/0x340 block/blk-mq.c:4443 nbd_dev_add+0x476/0xb00 drivers/block/nbd.c:1933 nbd_init+0x21a/0x2d0 drivers/block/nbd.c:2670 do_one_initcall+0x233/0x820 init/main.c:1274 do_initcall_level+0x137/0x1f0 init/main.c:1336 do_initcalls+0x69/0xd0 init/main.c:1352 page_owner free stack trace missing Memory state around the buggy address: ffff888034a74280: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc ffff888034a74300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888034a74380: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888034a74400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888034a74480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================