ffff888063d637e0, ffff88801f1e8000, gfs2_qd_dealloc
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1375 [inline]
BUG: KASAN: slab-use-after-free in gfs2_qd_dealloc+0x9a/0x100 fs/gfs2/quota.c:116
Write of size 4 at addr ffff88801f1e8a78 by task syz-executor.0/5395
CPU: 1 PID: 5395 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0x163/0x540 mm/kasan/report.c:475
kasan_report+0x175/0x1b0 mm/kasan/report.c:588
kasan_check_range+0x27e/0x290 mm/kasan/generic.c:187
instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1375 [inline]
gfs2_qd_dealloc+0x9a/0x100 fs/gfs2/quota.c:116
rcu_do_batch kernel/rcu/tree.c:2139 [inline]
rcu_core+0xacf/0x1790 kernel/rcu/tree.c:2403
__do_softirq+0x2ab/0x908 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1b0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x20 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae b6 10 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 e3 a9 88 f6 65 8b 05 e4 f2 2b 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90004d5f800 EFLAGS: 00000206
RAX: ee750290b0d5dd00 RBX: 1ffff920009abf04 RCX: ffffffff816dbfea
RDX: dffffc0000000000 RSI: ffffffff8b0aa380 RDI: 0000000000000001
RBP: ffffc90004d5f890 R08: ffffffff906fb3df R09: 1ffffffff20df67b
R10: dffffc0000000000 R11: fffffbfff20df67c R12: dffffc0000000000
R13: 1ffff920009abf00 R14: ffffc90004d5f820 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
unlock_page_lruvec_irqrestore include/linux/memcontrol.h:1632 [inline]
release_pages+0x20eb/0x23f0 mm/swap.c:1039
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
truncate_inode_pages_range+0x45d/0x11a0 mm/truncate.c:371
kill_bdev block/bdev.c:76 [inline]
blkdev_flush_mapping+0x15a/0x2b0 block/bdev.c:630
blkdev_put_whole block/bdev.c:661 [inline]
blkdev_put+0x4a9/0x770 block/bdev.c:898
deactivate_locked_super+0xa4/0x110 fs/super.c:481
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f873ec7de17
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff51412c98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f873ec7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff51412d50
RBP: 00007fff51412d50 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff51413e10
R13: 00007f873ecc73b9 R14: 000000000002de37 R15: 0000000000000003
Allocated by task 6207:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:599 [inline]
kzalloc include/linux/slab.h:720 [inline]
init_sbd fs/gfs2/ops_fstype.c:78 [inline]
gfs2_fill_super+0x138/0x2600 fs/gfs2/ops_fstype.c:1165
get_tree_bdev+0x416/0x5b0 fs/super.c:1577
gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1349
vfs_get_tree+0x8c/0x280 fs/super.c:1750
do_new_mount+0x28f/0xae0 fs/namespace.c:3335
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 5395:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook mm/slub.c:1826 [inline]
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0x25f/0x3b0 mm/slub.c:3822
generic_shutdown_super+0x13a/0x2c0 fs/super.c:693
kill_block_super+0x41/0x70 fs/super.c:1646
deactivate_locked_super+0xa4/0x110 fs/super.c:481
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Last potentially related work creation:
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
insert_work+0x3e/0x320 kernel/workqueue.c:1647
__queue_work+0xc06/0x1010 kernel/workqueue.c:1799
rcu_work_rcufn+0xff/0x140 kernel/workqueue.c:2039
rcu_do_batch kernel/rcu/tree.c:2139 [inline]
rcu_core+0xacf/0x1790 kernel/rcu/tree.c:2403
__do_softirq+0x2ab/0x908 kernel/softirq.c:553
Second to last potentially related work creation:
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
__call_rcu_common kernel/rcu/tree.c:2653 [inline]
call_rcu+0x167/0xa70 kernel/rcu/tree.c:2767
call_rcu_hurry include/linux/rcupdate.h:117 [inline]
queue_rcu_work+0x8f/0xa0 kernel/workqueue.c:2059
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
The buggy address belongs to the object at ffff88801f1e8000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2680 bytes inside of
freed 8192-byte region [ffff88801f1e8000, ffff88801f1ea000)
The buggy address belongs to the physical page:
page:ffffea00007c7a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f1e8
head:ffffea00007c7a00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888012842280 ffffea0000a6ba00 dead000000000005
raw: 0000000000000000 0000000080020002 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 4686, tgid 4686 (rcS), ts 45766440412, free_ts 45717036867
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
alloc_slab_page+0x6a/0x160 mm/slub.c:1870
allocate_slab mm/slub.c:2017 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2070
___slab_alloc+0xc85/0x1310 mm/slub.c:3223
__slab_alloc mm/slub.c:3322 [inline]
__slab_alloc_node mm/slub.c:3375 [inline]
slab_alloc_node mm/slub.c:3468 [inline]
__kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3517
kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1114
kmalloc include/linux/slab.h:599 [inline]
kzalloc include/linux/slab.h:720 [inline]
tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
tomoyo_init_log+0x11cd/0x2040 security/tomoyo/audit.c:264
tomoyo_supervisor+0x386/0x11f0 security/tomoyo/common.c:2089
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x178/0x210 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1383/0x1cf0 security/tomoyo/domain.c:878
tomoyo_bprm_check_security+0x114/0x170 security/tomoyo/tomoyo.c:101
security_bprm_check+0x63/0xa0 security/security.c:1103
search_binary_handler fs/exec.c:1727 [inline]
exec_binprm fs/exec.c:1781 [inline]
bprm_execve+0x8c7/0x17c0 fs/exec.c:1856
do_execveat_common+0x580/0x720 fs/exec.c:1964
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405
discard_slab mm/slub.c:2116 [inline]
__unfreeze_partials+0x1dc/0x220 mm/slub.c:2655
put_cpu_partial+0x17b/0x250 mm/slub.c:2731
__slab_free+0x2b6/0x390 mm/slub.c:3679
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x67/0x3d0 mm/slab.h:762
slab_alloc_node mm/slub.c:3478 [inline]
__kmem_cache_alloc_node+0x141/0x270 mm/slub.c:3517
kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1114
kmalloc include/linux/slab.h:599 [inline]
kzalloc include/linux/slab.h:720 [inline]
tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
tomoyo_init_log+0x11cd/0x2040 security/tomoyo/audit.c:264
tomoyo_supervisor+0x386/0x11f0 security/tomoyo/common.c:2089
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x178/0x210 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1383/0x1cf0 security/tomoyo/domain.c:878
tomoyo_bprm_check_security+0x114/0x170 security/tomoyo/tomoyo.c:101
Memory state around the buggy address:
ffff88801f1e8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801f1e8980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801f1e8a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801f1e8a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801f1e8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 ae b6 10 f7 call 0xf710b6c2
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 4e jne 0x69
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 e3 a9 88 f6 call 0xf688aa12 <-- trapping instruction
2f: 65 8b 05 e4 f2 2b 75 mov %gs:0x752bf2e4(%rip),%eax # 0x752bf31a
36: 85 c0 test %eax,%eax
38: 74 3f je 0x79
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss