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+0x84/0x24c fs/hfsplus/bnode.c:32
Read of size 8 at addr ffff0000d3f856e0 by task syz.1.624/6099

CPU: 0 PID: 6099 Comm: syz.1.624 Not tainted 5.15.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309
 hfsplus_bnode_read+0x84/0x24c fs/hfsplus/bnode.c:32
 hfsplus_bnode_dump+0x2c4/0x4cc
 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229
 __hfsplus_delete_attr+0x1e0/0x3ec fs/hfsplus/attributes.c:299
 hfsplus_delete_attr+0x2e4/0x41c fs/hfsplus/attributes.c:345
 __hfsplus_setxattr+0x3b8/0x1df0 fs/hfsplus/xattr.c:342
 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434
 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30
 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182
 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216
 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x250/0x2b4 fs/xattr.c:611
 path_setxattr+0x17c/0x258 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Allocated by task 6093:
 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+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x29c/0x4c8 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 __hfs_bnode_create+0xe4/0x864 fs/hfsplus/bnode.c:416
 hfsplus_bnode_find+0x200/0xcb0 fs/hfsplus/bnode.c:497
 hfsplus_brec_find+0x134/0x4a0 fs/hfsplus/bfind.c:172
 hfsplus_find_attr+0x1e0/0x33c
 hfsplus_attr_exists+0x154/0x1c8 fs/hfsplus/attributes.c:182
 __hfsplus_setxattr+0x384/0x1df0 fs/hfsplus/xattr.c:336
 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434
 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30
 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182
 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216
 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x250/0x2b4 fs/xattr.c:611
 path_setxattr+0x17c/0x258 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087
 neigh_parms_release+0x1b0/0x228 net/core/neighbour.c:1674
 addrconf_ifdown+0x1510/0x1814 net/ipv6/addrconf.c:3932
 addrconf_notify+0x350/0xc58
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
 call_netdevice_notifiers net/core/dev.c:2044 [inline]
 unregister_netdevice_many+0xec4/0x189c net/core/dev.c:11102
 unregister_netdevice_queue+0x2d0/0x31c net/core/dev.c:11035
 unregister_netdevice include/linux/netdevice.h:3012 [inline]
 __tun_detach+0xb88/0x12dc drivers/net/tun.c:686
 tun_detach drivers/net/tun.c:702 [inline]
 tun_chr_close+0x118/0x20c drivers/net/tun.c:3440
 __fput+0x1c4/0x800 fs/file_table.c:280
 ____fput+0x20/0x30 fs/file_table.c:308
 task_work_run+0x130/0x1e4 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Second to last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
 insert_work+0x64/0x394 kernel/workqueue.c:1366
 __queue_work+0xb84/0x114c kernel/workqueue.c:1532
 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559
 queue_work include/linux/workqueue.h:512 [inline]
 netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline]
 netdevice_event+0x724/0x84c drivers/infiniband/core/roce_gid_mgmt.c:802
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
 call_netdevice_notifiers+0x138/0x1b8 net/core/dev.c:2044
 register_netdevice+0xf28/0x12d4 net/core/dev.c:10396
 tun_set_iff+0x620/0xaa0 drivers/net/tun.c:2802
 __tun_chr_ioctl+0x85c/0x2dd4 drivers/net/tun.c:3062
 tun_chr_ioctl+0x38/0x4c drivers/net/tun.c:3349
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000d3f85600
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 224 bytes inside of
 256-byte region [ffff0000d3f85600, ffff0000d3f85700)
The buggy address belongs to the page:
page:000000009436ebab refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113f84
head:000000009436ebab order:1 compound_mapcount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 fffffc00033de180 0000000c00000008 ffff0000c0002480
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d3f85580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d3f85600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000d3f85680: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                       ^
 ffff0000d3f85700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d3f85780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
Unable to handle kernel paging request at virtual address ffff61380000c067
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ae196000
[ffff61380000c067] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6099 Comm: syz.1.624 Tainted: G    B             5.15.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : bytes_is_nonzero mm/kasan/generic.c:85 [inline]
pc : memory_is_nonzero mm/kasan/generic.c:102 [inline]
pc : memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
pc : memory_is_poisoned mm/kasan/generic.c:159 [inline]
pc : check_region_inline mm/kasan/generic.c:180 [inline]
pc : kasan_check_range+0x74/0x2b4 mm/kasan/generic.c:189
lr : memcpy+0x90/0xe8 mm/kasan/shadow.c:65
sp : ffff800020a56d90
x29: ffff800020a56d90 x28: 00000000000000ff x27: dfff800000000000
x26: ffff800020a56ec0 x25: 1ffff000028a79cf x24: 0000000000000001
x23: ffff8000171c7000 x22: ffff800008fc3718 x21: ffff800020a56ea0
x20: ffff09c00006033f x19: 0000000000000001 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800011b4e648 x15: 00000000000000ff
x14: ffff0000c7998000 x13: 0000000000ff0100 x12: 0000000000000001
x11: 1fffe1380000c067 x10: 1fffe1380000c067 x9 : ffffffffffffffff
x8 : ffff61380000c067 x7 : 0000000000000000 x6 : 00000000000000ff
x5 : ffff800020a56ec2 x4 : ffff0000f4cd700c x3 : ffff800008fc3718
x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffff09c00006033f
Call trace:
 bytes_is_nonzero mm/kasan/generic.c:84 [inline]
 memory_is_nonzero mm/kasan/generic.c:102 [inline]
 memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
 memory_is_poisoned mm/kasan/generic.c:159 [inline]
 check_region_inline mm/kasan/generic.c:180 [inline]
 kasan_check_range+0x74/0x2b4 mm/kasan/generic.c:189
 memcpy+0x90/0xe8 mm/kasan/shadow.c:65
 hfsplus_bnode_read+0x120/0x24c fs/hfsplus/bnode.c:32
 hfsplus_bnode_dump+0x2c4/0x4cc
 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229
 __hfsplus_delete_attr+0x1e0/0x3ec fs/hfsplus/attributes.c:299
 hfsplus_delete_attr+0x2e4/0x41c fs/hfsplus/attributes.c:345
 __hfsplus_setxattr+0x3b8/0x1df0 fs/hfsplus/xattr.c:342
 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434
 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30
 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182
 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216
 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277
 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x250/0x2b4 fs/xattr.c:611
 path_setxattr+0x17c/0x258 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 5400014c b4000b8c aa2a03e9 8b0b0129 (3940010a) 
---[ end trace 0a846d5e7b5640b3 ]---
----------------
Code disassembly (best guess):
   0:	5400014c 	b.gt	0x28
   4:	b4000b8c 	cbz	x12, 0x174
   8:	aa2a03e9 	mvn	x9, x10
   c:	8b0b0129 	add	x9, x9, x11
* 10:	3940010a 	ldrb	w10, [x8] <-- trapping instruction