loop0: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0xc0/0x2a0 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff8880357d0fc8 by task syz.0.0/5333 CPU: 0 UID: 0 PID: 5333 Comm: syz.0.0 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #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_setxattr+0x37a/0x1f40 fs/hfsplus/xattr.c:342 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 RIP: 0033:0x7fbec0b8e929 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:00007fbebcff5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fbec0db5fa0 RCX: 00007fbec0b8e929 RDX: 0000200000001400 RSI: 0000200000000240 RDI: 0000200000000280 RBP: 00007fbec0c10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000841 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbec0db5fa0 R15: 00007fffa5bf9318 Allocated by task 5334: 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 ffff8880357d0f00 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 [ffff8880357d0f00, ffff8880357d0f98) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x357d0 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88801a4413c0 ffffea00010f26c0 dead000000000002 raw: 0000000000000000 0000000000100010 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 12564354446, 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_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/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] __kmalloc_cache_node_noprof+0x29a/0x3d0 mm/slub.c:4367 kmalloc_node_noprof include/linux/slab.h:928 [inline] alloc_worker kernel/workqueue.c:2647 [inline] init_rescuer+0x176/0x570 kernel/workqueue.c:5567 __alloc_workqueue+0x176b/0x1b70 kernel/workqueue.c:5747 alloc_workqueue+0xd4/0x210 kernel/workqueue.c:5788 ieee802154_register_hw+0x13b/0x980 net/mac802154/main.c:203 hwsim_add_one+0x4b2/0x1420 drivers/net/ieee802154/mac802154_hwsim.c:965 hwsim_probe+0x47/0x110 drivers/net/ieee802154/mac802154_hwsim.c:1022 platform_probe+0x148/0x1d0 drivers/base/platform.c:1404 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26a/0x9a0 drivers/base/dd.c:657 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799 page_owner free stack trace missing Memory state around the buggy address: ffff8880357d0e80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880357d0f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880357d0f80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880357d1000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880357d1080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================