syzbot

==================================================================
BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x198/0x1b0 lib/list_debug.c:62
Read of size 8 at addr ffff88801c551048 by task syz-executor159/5209

CPU: 0 PID: 5209 Comm: syz-executor159 Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 __list_del_entry_valid_or_report+0x198/0x1b0 lib/list_debug.c:62
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 ptp_release+0xc4/0x2b0 drivers/ptp/ptp_chardev.c:147
 posix_clock_release+0xa4/0x160 kernel/time/posix-clock.c:157
 __fput+0x270/0xbb0 fs/file_table.c:394
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa92/0x2ae0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa4fd059bf9
Code: Unable to access opcode bytes at 0x7fa4fd059bcf.
RSP: 002b:00007ffe06a92e28 EFLAGS: 00000246
 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa4fd059bf9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fa4fd0d4290 R08: ffffffffffffffb8 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa4fd0d4290
R13: 0000000000000000 R14: 00007fa4fd0d4d00 R15: 00007fa4fd02adb0
 </TASK>

Allocated by task 5207:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:600 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 ptp_open+0xe3/0x4f0 drivers/ptp/ptp_chardev.c:112
 posix_clock_open+0x17e/0x240 kernel/time/posix-clock.c:134
 chrdev_open+0x26d/0x6e0 fs/char_dev.c:414
 do_dentry_open+0x8d4/0x18d0 fs/open.c:948
 do_open fs/namei.c:3622 [inline]
 path_openat+0x1d4e/0x2c40 fs/namei.c:3779
 do_filp_open+0x1de/0x430 fs/namei.c:3809
 do_sys_openat2+0x176/0x1e0 fs/open.c:1440
 do_sys_open fs/open.c:1455 [inline]
 __do_sys_openat fs/open.c:1471 [inline]
 __se_sys_openat fs/open.c:1466 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1466
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Freed by task 5207:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
 slab_free mm/slub.c:3809 [inline]
 __kmem_cache_free+0xc0/0x180 mm/slub.c:3822
 ptp_release+0x204/0x2b0 drivers/ptp/ptp_chardev.c:150
 posix_clock_release+0xa4/0x160 kernel/time/posix-clock.c:157
 __fput+0x270/0xbb0 fs/file_table.c:394
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa92/0x2ae0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

The buggy address belongs to the object at ffff88801c550000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 4168 bytes inside of
 freed 8192-byte region [ffff88801c550000, ffff88801c552000)

The buggy address belongs to the physical page:
page:ffffea0000715400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c550
head:ffffea0000715400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888013042280 ffffea000067f200 dead000000000004
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4734, tgid 4734 (start-stop-daem), ts 44349679961, free_ts 44310458454
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36c0 mm/page_alloc.c:3312
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab+0x251/0x380 mm/slub.c:2017
 new_slab mm/slub.c:2070 [inline]
 ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 __kmem_cache_alloc_node+0x131/0x310 mm/slub.c:3517
 kmalloc_trace+0x25/0xe0 mm/slab_common.c:1098
 kmalloc include/linux/slab.h:600 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
 tomoyo_init_log+0xcdf/0x2110 security/tomoyo/audit.c:264
 tomoyo_supervisor+0x30c/0xea0 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_execute_permission+0x38a/0x4a0 security/tomoyo/file.c:619
 tomoyo_find_next_domain+0x367/0x2020 security/tomoyo/domain.c:752
 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:101 [inline]
 tomoyo_bprm_check_security+0x12b/0x1d0 security/tomoyo/tomoyo.c:91
 security_bprm_check+0x6a/0xe0 security/security.c:1103
 search_binary_handler fs/exec.c:1725 [inline]
 exec_binprm fs/exec.c:1779 [inline]
 bprm_execve fs/exec.c:1854 [inline]
 bprm_execve+0x73a/0x1a90 fs/exec.c:1810
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:763 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x15d/0x380 mm/slub.c:3502
 getname_flags.part.0+0x50/0x4e0 fs/namei.c:140
 getname_flags include/linux/audit.h:321 [inline]
 getname+0x90/0xe0 fs/namei.c:219
 do_sys_openat2+0x100/0x1e0 fs/open.c:1434
 do_sys_open fs/open.c:1455 [inline]
 __do_sys_openat fs/open.c:1471 [inline]
 __se_sys_openat fs/open.c:1466 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1466
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffff88801c550f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801c550f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801c551000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff88801c551080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801c551100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
list_del corruption. prev->next should be ffff888019fcd048, but was dead000000000100. (prev=ffff88801c551048)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
invalid opcode: 0000 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 5209 Comm: syz-executor159 Tainted: G    B D            6.6.0-syzkaller-15494-g6bc986ab839c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:__list_del_entry_valid_or_report+0x11f/0x1b0 lib/list_debug.c:62
Code: f2 2e 8b e8 43 1a 02 fd 0f 0b 48 89 ca 48 c7 c7 80 f2 2e 8b e8 32 1a 02 fd 0f 0b 48 89 c2 48 c7 c7 e0 f2 2e 8b e8 21 1a 02 fd <0f> 0b 48 89 d1 48 c7 c7 60 f3 2e 8b 48 89 c2 e8 0d 1a 02 fd 0f 0b
RSP: 0018:ffffc90004557c78 EFLAGS: 00010082
RAX: 000000000000006d RBX: ffff888019fcc000 RCX: ffffffff816b6ea9
RDX: 0000000000000000 RSI: ffffffff816c0332 RDI: 0000000000000005
RBP: ffff888016fbec80 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 78656e3e2d766572 R12: 0000000000000246
R13: ffff888019fcd048 R14: ffff888019fcd008 R15: ffff888019fcd050
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4fd0832a0 CR3: 000000000cd77000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 ptp_release+0xc4/0x2b0 drivers/ptp/ptp_chardev.c:147
 posix_clock_release+0xa4/0x160 kernel/time/posix-clock.c:157
 __fput+0x270/0xbb0 fs/file_table.c:394
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa92/0x2ae0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa4fd059bf9
Code: Unable to access opcode bytes at 0x7fa4fd059bcf.
RSP: 002b:00007ffe06a92e28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa4fd059bf9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fa4fd0d4290 R08: ffffffffffffffb8 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa4fd0d4290
R13: 0000000000000000 R14: 00007fa4fd0d4d00 R15: 00007fa4fd02adb0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x133/0x1b0 lib/list_debug.c:65
Code: e8 32 1a 02 fd 0f 0b 48 89 c2 48 c7 c7 e0 f2 2e 8b e8 21 1a 02 fd 0f 0b 48 89 d1 48 c7 c7 60 f3 2e 8b 48 89 c2 e8 0d 1a 02 fd <0f> 0b 48 89 34 24 e8 e2 4b 76 fd 48 8b 34 24 e9 e3 fe ff ff 48 89
RSP: 0018:ffffc90004517c78 EFLAGS: 00010082
RAX: 000000000000006d RBX: ffff88807ecfc000 RCX: ffffffff816b6ea9
RDX: 0000000000000000 RSI: ffffffff816c0332 RDI: 0000000000000005
RBP: ffff88801f993ca0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000046 R12: 0000000000000246
R13: ffff88807ecfd048 R14: ffff88807ecfd008 R15: ffff88807ecfd050
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4fd0832a0 CR3: 000000000cd77000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400