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BUG: KASAN: out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: out-of-bounds in atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
BUG: KASAN: out-of-bounds in put_bh include/linux/buffer_head.h:320 [inline]
BUG: KASAN: out-of-bounds in end_buffer_read_sync+0xbd/0xd0 fs/buffer.c:160
Write of size 4 at addr ffffc9000d05f820 by task ksoftirqd/0/15

CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
 put_bh include/linux/buffer_head.h:320 [inline]
 end_buffer_read_sync+0xbd/0xd0 fs/buffer.c:160
 end_bio_bh_io_sync+0xb3/0x110 fs/buffer.c:2655
 req_bio_endio block/blk-mq.c:777 [inline]
 blk_update_request+0x53b/0x1010 block/blk-mq.c:922
 blk_mq_end_request+0x3a/0x70 block/blk-mq.c:1047
 blk_complete_reqs block/blk-mq.c:1127 [inline]
 blk_done_softirq+0xf8/0x140 block/blk-mq.c:1132
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938
 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000d058000, ffffc9000d061000) created by:
 copy_process+0x637/0x4060 kernel/fork.c:2098

The buggy address belongs to the physical page:
page:ffffea0001df1940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x77c65
memcg:ffff8880259ab802
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff8880259ab802
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 8858, tgid 8858 (syz-executor.3), ts 269605346492, free_ts 266917160170
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513
 prep_new_page mm/page_alloc.c:2520 [inline]
 get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547
 vm_area_alloc_pages mm/vmalloc.c:2983 [inline]
 __vmalloc_area_node mm/vmalloc.c:3051 [inline]
 __vmalloc_node_range+0x96c/0x1460 mm/vmalloc.c:3223
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct+0x3e5/0x6d0 kernel/fork.c:988
 copy_process+0x637/0x4060 kernel/fork.c:2098
 kernel_clone+0x222/0x920 kernel/fork.c:2682
 __do_sys_clone3 kernel/fork.c:2981 [inline]
 __se_sys_clone3+0x373/0x410 kernel/fork.c:2965
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1440 [inline]
 free_pcp_prepare mm/page_alloc.c:1490 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358
 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3453
 free_slab mm/slub.c:2031 [inline]
 discard_slab mm/slub.c:2037 [inline]
 __unfreeze_partials+0x1b7/0x210 mm/slub.c:2586
 put_cpu_partial+0x17b/0x250 mm/slub.c:2662
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 __kmem_cache_alloc_node+0x137/0x260 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc+0xa1/0x230 mm/slab_common.c:968
 kmalloc include/linux/slab.h:561 [inline]
 tomoyo_realpath_from_path+0xcb/0x5d0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x21f/0x7f0 security/tomoyo/file.c:723
 security_file_ioctl+0x6d/0xa0 security/security.c:1568
 __do_sys_ioctl fs/ioctl.c:864 [inline]
 __se_sys_ioctl+0x47/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Memory state around the buggy address:
 ffffc9000d05f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000d05f780: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3
>ffffc9000d05f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                  ^
 ffffc9000d05f880: f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3
 ffffc9000d05f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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