loop0: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 211 in B*Tree hfsplus: request for non-existent node 211 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 ffff8880359b4dc8 by task syz-executor352/5309 CPU: 0 UID: 0 PID: 5309 Comm: syz-executor352 Not tainted 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #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_attr+0x231/0x2d0 fs/hfsplus/attributes.c:345 hfsplus_removexattr fs/hfsplus/xattr.c:792 [inline] __hfsplus_setxattr+0x71c/0x1f40 fs/hfsplus/xattr.c:275 hfsplus_setxattr+0x11e/0x180 fs/hfsplus/xattr.c:432 hfsplus_trusted_setxattr+0x40/0x60 fs/hfsplus/xattr_trusted.c:30 __vfs_removexattr+0x42e/0x470 fs/xattr.c:518 __vfs_removexattr_locked+0x1ed/0x230 fs/xattr.c:553 vfs_removexattr+0x80/0x1b0 fs/xattr.c:575 removexattr fs/xattr.c:1023 [inline] filename_removexattr fs/xattr.c:1052 [inline] path_removexattrat+0x35d/0x690 fs/xattr.c:1088 __do_sys_lremovexattr fs/xattr.c:1106 [inline] __se_sys_lremovexattr fs/xattr.c:1103 [inline] __x64_sys_lremovexattr+0x65/0x80 fs/xattr.c:1103 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: 0033:0x7f3bbe0f8e19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdd25e6a18 EFLAGS: 00000246 ORIG_RAX: 00000000000000c6 RAX: ffffffffffffffda RBX: 0000200000000240 RCX: 00007f3bbe0f8e19 RDX: ffffffffffffffb8 RSI: 00002000000000c0 RDI: 0000200000000240 RBP: 0000200000000280 R08: 000055557c5ae4c0 R09: 000055557c5ae4c0 R10: 0000000000000000 R11: 0000000000000246 R12: 0072657070752e79 R13: 0031656c69662f2e R14: 0000200000001400 R15: 00007f3bbe14203b Allocated by task 5309: 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_attr_exists+0x163/0x1d0 fs/hfsplus/attributes.c:182 __hfsplus_setxattr+0x33e/0x1f40 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0x11e/0x180 fs/hfsplus/xattr.c:432 hfsplus_trusted_setxattr+0x40/0x60 fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x43c/0x480 fs/xattr.c:200 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234 vfs_setxattr+0x16b/0x2f0 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x274/0x600 fs/xattr.c:665 path_setxattrat+0x364/0x3a0 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 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 ffff8880359b4d00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 48 bytes to the right of allocated 152-byte region [ffff8880359b4d00, ffff8880359b4d98) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x359b4 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88801a4413c0 ffffea0000db1ac0 dead000000000002 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 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 12906469325, 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 sbitmap_queue_init_node+0x41/0x660 lib/sbitmap.c:438 bt_alloc block/blk-mq-tag.c:542 [inline] blk_mq_init_tags+0x110/0x280 block/blk-mq-tag.c:565 blk_mq_alloc_rq_map block/blk-mq.c:3538 [inline] blk_mq_alloc_map_and_rqs+0xbd/0x9f0 block/blk-mq.c:4094 __blk_mq_alloc_map_and_rqs block/blk-mq.c:4116 [inline] __blk_mq_alloc_rq_maps block/blk-mq.c:4643 [inline] blk_mq_alloc_set_map_and_rqs+0x1aa/0x880 block/blk-mq.c:4674 blk_mq_alloc_tag_set+0x847/0xfd0 block/blk-mq.c:4848 add_mtd_blktrans_dev+0x7b3/0x1450 drivers/mtd/mtd_blkdevs.c:331 mtdblock_add_mtd+0x18a/0x240 drivers/mtd/mtdblock.c:333 blktrans_notify_add+0x9f/0xf0 drivers/mtd/mtd_blkdevs.c:464 add_mtd_device+0x1002/0x1850 drivers/mtd/mtdcore.c:812 page_owner free stack trace missing Memory state around the buggy address: ffff8880359b4c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880359b4d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880359b4d80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880359b4e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880359b4e80: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc ==================================================================