loop0: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 134217728 in B*Tree hfsplus: request for non-existent node 134217728 in B*Tree ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff88802be29098 by task syz-executor138/4162 CPU: 1 PID: 4162 Comm: syz-executor138 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:47 [inline] hfsplus_bnode_dump+0x3f7/0x7c0 fs/hfsplus/bnode.c:328 hfsplus_brec_remove+0x428/0x4e0 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x271/0x450 fs/hfsplus/attributes.c:299 hfsplus_delete_attr+0x34f/0x4a0 fs/hfsplus/attributes.c:345 __hfsplus_setxattr+0x494/0x22c0 fs/hfsplus/xattr.c:342 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_trusted_setxattr+0x3c/0x50 fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x27e/0x2e0 fs/xattr.c:611 path_setxattr+0x1bc/0x2a0 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fddeda0d6f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007ffd2b5cc0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fddeda0d6f9 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000200000000180 RBP: 0072657070752e79 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd2b5cc2a8 R14: 0000000000000001 R15: 0000000000000001 Allocated by task 4162: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x168/0x300 mm/slub.c:4407 kmalloc include/linux/slab.h:609 [inline] kzalloc include/linux/slab.h:735 [inline] __hfs_bnode_create+0xf9/0xbb0 fs/hfsplus/bnode.c:416 hfsplus_bnode_find+0x22e/0xe80 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x17f/0x570 fs/hfsplus/bfind.c:172 hfsplus_attr_exists+0x15b/0x1c0 fs/hfsplus/attributes.c:182 __hfsplus_setxattr+0x453/0x22c0 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0xac/0xe0 fs/hfsplus/xattr.c:434 hfsplus_trusted_setxattr+0x3c/0x50 fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x27e/0x2e0 fs/xattr.c:611 path_setxattr+0x1bc/0x2a0 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 insert_work+0x54/0x3e0 kernel/workqueue.c:1366 __queue_work+0x963/0xd00 kernel/workqueue.c:1532 queue_work_on+0x14b/0x250 kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] call_usermodehelper_exec+0x269/0x450 kernel/umh.c:435 kobject_uevent_env+0x69e/0x8d0 lib/kobject_uevent.c:633 device_add+0xa4f/0xfd0 drivers/base/core.c:3393 netdev_register_kobject+0x176/0x310 net/core/net-sysfs.c:2014 register_netdevice+0xfe7/0x16a0 net/core/dev.c:10396 register_netdev+0x37/0x50 net/core/dev.c:10520 rose_proto_init+0x19c/0x7c0 net/rose/af_rose.c:1584 do_one_initcall+0x22b/0x7a0 init/main.c:1302 do_initcall_level+0x157/0x210 init/main.c:1375 do_initcalls+0x49/0x90 init/main.c:1391 kernel_init_freeable+0x425/0x5c0 init/main.c:1615 kernel_init+0x19/0x290 init/main.c:1506 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff88802be29000 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 152 bytes inside of 192-byte region [ffff88802be29000, ffff88802be290c0) The buggy address belongs to the page: page:ffffea0000af8a40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2be29 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0000af80c0 0000000800000008 ffff888017441a00 raw: 0000000000000000 0000000080100010 00000001ffffffff 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 16496522300, free_ts 16495876839 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5466 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2031 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc_trace+0x1a0/0x290 mm/slub.c:3245 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:735 [inline] call_usermodehelper_setup+0x8a/0x260 kernel/umh.c:365 kobject_uevent_env+0x681/0x8d0 lib/kobject_uevent.c:629 device_add+0xa4f/0xfd0 drivers/base/core.c:3393 netdev_register_kobject+0x176/0x310 net/core/net-sysfs.c:2014 register_netdevice+0xfe7/0x16a0 net/core/dev.c:10396 register_netdev+0x37/0x50 net/core/dev.c:10520 rose_proto_init+0x19c/0x7c0 net/rose/af_rose.c:1584 do_one_initcall+0x22b/0x7a0 init/main.c:1302 do_initcall_level+0x157/0x210 init/main.c:1375 do_initcalls+0x49/0x90 init/main.c:1391 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 __vunmap+0x8b3/0xa50 mm/vmalloc.c:2621 free_work+0x57/0x80 mm/vmalloc.c:95 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Memory state around the buggy address: ffff88802be28f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88802be29000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802be29080: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88802be29100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802be29180: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================