loop1: 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-use-after-free in hfsplus_bnode_read+0x22a/0x240 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff88801cc0a600 by task syz-executor.1/5516 CPU: 2 PID: 5516 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 hfsplus_bnode_read+0x22a/0x240 fs/hfsplus/bnode.c:32 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] hfsplus_bnode_dump+0x2a2/0x3e0 fs/hfsplus/bnode.c:321 hfsplus_brec_remove+0x3e2/0x4f0 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x2a2/0x3b0 fs/hfsplus/attributes.c:299 hfsplus_delete_attr+0x27e/0x310 fs/hfsplus/attributes.c:345 __hfsplus_setxattr+0x66f/0x2180 fs/hfsplus/xattr.c:342 hfsplus_setxattr+0x10c/0x180 fs/hfsplus/xattr.c:432 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x350 fs/xattr.c:321 do_setxattr+0x146/0x170 fs/xattr.c:629 setxattr+0x15d/0x180 fs/xattr.c:652 path_setxattr+0x179/0x1e0 fs/xattr.c:671 __do_sys_setxattr fs/xattr.c:687 [inline] __se_sys_setxattr fs/xattr.c:683 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faadca7cee9 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:00007faadd71f0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007faadcbabf80 RCX: 00007faadca7cee9 RDX: 0000000020001280 RSI: 00000000200001c0 RDI: 0000000020000380 RBP: 00007faadcac949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007faadcbabf80 R15: 00007ffe525834b8 Allocated by task 1: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4122 [inline] kmalloc_node_track_caller_noprof+0x20f/0x430 mm/slub.c:4142 __do_krealloc mm/slab_common.c:1183 [inline] krealloc_noprof+0x5d/0x100 mm/slab_common.c:1216 add_sysfs_param+0xcb/0x960 kernel/params.c:654 kernel_add_sysfs_param kernel/params.c:817 [inline] param_sysfs_builtin kernel/params.c:856 [inline] param_sysfs_builtin_init+0x2ce/0x460 kernel/params.c:990 do_one_initcall+0x128/0x700 init/main.c:1267 do_initcall_level init/main.c:1329 [inline] do_initcalls init/main.c:1345 [inline] do_basic_setup init/main.c:1364 [inline] kernel_init_freeable+0x69d/0xca0 init/main.c:1578 kernel_init+0x1c/0x2b0 init/main.c:1467 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 1: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2196 [inline] slab_free mm/slub.c:4437 [inline] kfree+0x12a/0x3b0 mm/slub.c:4558 krealloc_noprof+0xbc/0x100 mm/slab_common.c:1218 add_sysfs_param+0xcb/0x960 kernel/params.c:654 kernel_add_sysfs_param kernel/params.c:817 [inline] param_sysfs_builtin kernel/params.c:856 [inline] param_sysfs_builtin_init+0x2ce/0x460 kernel/params.c:990 do_one_initcall+0x128/0x700 init/main.c:1267 do_initcall_level init/main.c:1329 [inline] do_initcalls init/main.c:1345 [inline] do_basic_setup init/main.c:1364 [inline] kernel_init_freeable+0x69d/0xca0 init/main.c:1578 kernel_init+0x1c/0x2b0 init/main.c:1467 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff88801cc0a600 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 0 bytes inside of freed 192-byte region [ffff88801cc0a600, ffff88801cc0a6c0) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1cc0a anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000000 ffff8880154423c0 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001ffffefff 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 7856776261, free_ts 7462369929 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1468 prep_new_page mm/page_alloc.c:1476 [inline] get_page_from_freelist+0x136a/0x2e50 mm/page_alloc.c:3420 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4678 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x56/0x110 mm/slub.c:2265 allocate_slab mm/slub.c:2428 [inline] new_slab+0x84/0x260 mm/slub.c:2481 ___slab_alloc+0xdac/0x1870 mm/slub.c:3667 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3989 [inline] __do_kmalloc_node mm/slub.c:4121 [inline] __kmalloc_node_noprof+0x35c/0x440 mm/slub.c:4129 kmalloc_node_noprof include/linux/slab.h:681 [inline] kvmalloc_node_noprof+0x9d/0x1a0 mm/util.c:634 drm_property_create_blob+0x74/0x330 drivers/gpu/drm/drm_property.c:565 create_in_format_blob drivers/gpu/drm/drm_plane.c:214 [inline] __drm_universal_plane_init+0x972/0x1d90 drivers/gpu/drm/drm_plane.c:473 __drmm_universal_plane_alloc+0x206/0x290 drivers/gpu/drm/drm_plane.c:560 vkms_plane_init+0x5f/0xe0 drivers/gpu/drm/vkms/vkms_plane.c:206 vkms_output_init+0x437/0x5b0 drivers/gpu/drm/vkms/vkms_output.c:74 vkms_modeset_init drivers/gpu/drm/vkms/vkms_drv.c:173 [inline] vkms_create drivers/gpu/drm/vkms/vkms_drv.c:215 [inline] vkms_init+0x5d1/0x760 drivers/gpu/drm/vkms/vkms_drv.c:252 do_one_initcall+0x128/0x700 init/main.c:1267 page last free pid 10 tgid 10 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1088 [inline] free_unref_page+0x64a/0xe40 mm/page_alloc.c:2583 vfree+0x181/0x7a0 mm/vmalloc.c:3346 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:3267 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff88801cc0a500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801cc0a580: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88801cc0a600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801cc0a680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88801cc0a700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================