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BUG: KASAN: slab-use-after-free in smk_access+0xab/0x3f0 security/smack/smack_access.c:147
Read of size 8 at addr ffff8881056c1b20 by task syz.0.15/4745

CPU: 0 UID: 60928 PID: 4745 Comm: syz.0.15 Not tainted 6.11.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x231/0x330 lib/dump_stack.c:119
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 smk_access+0xab/0x3f0 security/smack/smack_access.c:147
 smack_watch_key+0x2ac/0x370 security/smack/smack_lsm.c:4656
 security_watch_key+0x65/0x90 security/security.c:4359
 keyctl_watch_key+0x2b7/0x480 security/keys/keyctl.c:1813
 __do_sys_keyctl security/keys/keyctl.c:2021 [inline]
 __se_sys_keyctl+0x409/0xc10 security/keys/keyctl.c:1874
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f91164fdef9
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:00007f9115f7f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f91166b5f80 RCX: 00007f91164fdef9
RDX: 0000000000000004 RSI: 000000002eb862bd RDI: 0000000000000020
RBP: 00007f9116570b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f91166b5f80 R15: 00007ffdd617dfa8
 </TASK>

Allocated by task 4327:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x1fb/0x460 mm/slub.c:4177
 kstrdup+0x3a/0x80 mm/util.c:64
 bprm_change_interp+0x82/0xc0 fs/exec.c:1637
 load_script+0x6a4/0x820 fs/binfmt_script.c:125
 search_binary_handler fs/exec.c:1821 [inline]
 exec_binprm fs/exec.c:1863 [inline]
 bprm_execve+0x769/0x1590 fs/exec.c:1914
 do_execveat_common+0x55a/0x6f0 fs/exec.c:2021
 do_execve fs/exec.c:2095 [inline]
 __do_sys_execve fs/exec.c:2171 [inline]
 __se_sys_execve fs/exec.c:2166 [inline]
 __x64_sys_execve+0x92/0xb0 fs/exec.c:2166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 4327:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2252 [inline]
 slab_free mm/slub.c:4473 [inline]
 kfree+0x12f/0x310 mm/slub.c:4594
 free_bprm+0x26e/0x2e0 fs/exec.c:1573
 do_execveat_common+0x383/0x6f0 fs/exec.c:2023
 do_execve fs/exec.c:2095 [inline]
 __do_sys_execve fs/exec.c:2171 [inline]
 __se_sys_execve fs/exec.c:2166 [inline]
 __x64_sys_execve+0x92/0xb0 fs/exec.c:2166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x8d/0x190 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8881056c1b20
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes inside of
 freed 8-byte region [ffff8881056c1b20, ffff8881056c1b28)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1056c1
anon flags: 0x200000000000000(node=0|zone=2)
page_type: 0xfdffffff(slab)
raw: 0200000000000000 ffff888100041500 0000000000000000 dead000000000001
raw: 0000000000000000 0000000080800080 00000001fdffffff 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 3684132729, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x10f/0x130 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x37f4/0x3920 mm/page_alloc.c:3442
 __alloc_pages_noprof+0x256/0x670 mm/page_alloc.c:4700
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2321
 allocate_slab+0x5d/0x290 mm/slub.c:2484
 new_slab mm/slub.c:2537 [inline]
 ___slab_alloc+0xa7f/0x11d0 mm/slub.c:3723
 __slab_alloc mm/slub.c:3813 [inline]
 __slab_alloc_node mm/slub.c:3866 [inline]
 slab_alloc_node mm/slub.c:4025 [inline]
 __do_kmalloc_node mm/slub.c:4157 [inline]
 __kmalloc_noprof+0x25a/0x440 mm/slub.c:4170
 kmalloc_noprof include/linux/slab.h:685 [inline]
 kzalloc_noprof include/linux/slab.h:807 [inline]
 acpi_ut_create_package_object+0x1d7/0x310 drivers/acpi/acpica/utobject.c:148
 acpi_ut_copy_epackage_to_ipackage drivers/acpi/acpica/utcopy.c:554 [inline]
 acpi_ut_copy_eobject_to_iobject+0x3cb/0x9d0 drivers/acpi/acpica/utcopy.c:612
 acpi_evaluate_object+0x4ba/0xaf0 drivers/acpi/acpica/nsxfeval.c:259
 acpi_evaluate_dsm drivers/acpi/utils.c:798 [inline]
 acpi_check_dsm+0x294/0x870 drivers/acpi/utils.c:830
 device_has_acpi_name drivers/pci/pci-label.c:44 [inline]
 smbios_attr_is_visible+0x9c/0x420 drivers/pci/pci-label.c:121
 create_files fs/sysfs/group.c:65 [inline]
 internal_create_group+0x70f/0x1150 fs/sysfs/group.c:180
 internal_create_groups fs/sysfs/group.c:220 [inline]
 sysfs_create_groups+0x56/0x120 fs/sysfs/group.c:246
 bus_add_device+0x168/0x460 drivers/base/bus.c:493
 device_add+0x59b/0xc00 drivers/base/core.c:3636
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8881056c1a00: fa fc fc fc 00 fc fc fc fa fc fc fc fa fc fc fc
 ffff8881056c1a80: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
>ffff8881056c1b00: 00 fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
                               ^
 ffff8881056c1b80: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
 ffff8881056c1c00: 06 fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
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