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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:323 [inline]
BUG: KASAN: out-of-bounds in end_buffer_read_sync+0x5c/0x90 fs/buffer.c:161
Write of size 4 at addr ffffc9000b86f9a8 by task ksoftirqd/0/15

CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.2.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x60/0xa0 lib/dump_stack.c:106
 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:319
 print_report mm/kasan/report.c:430 [inline]
 kasan_report+0x118/0x130 mm/kasan/report.c:536
 check_region_inline mm/kasan/generic.c:181 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:187
 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:323 [inline]
 end_buffer_read_sync+0x5c/0x90 fs/buffer.c:161
 end_bio_bh_io_sync+0xa9/0xf0 fs/buffer.c:2703
 req_bio_endio block/blk-mq.c:795 [inline]
 blk_update_request+0x31f/0x1320 block/blk-mq.c:927
 blk_mq_end_request+0x46/0x70 block/blk-mq.c:1054
 blk_complete_reqs+0xa0/0xd0 block/blk-mq.c:1132
 __do_softirq+0x2df/0xadf kernel/softirq.c:571
 run_ksoftirqd kernel/softirq.c:934 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:926
 smpboot_thread_fn+0x548/0x8f0 kernel/smpboot.c:164
 kthread+0x294/0x330 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
 [ffffc9000b868000, ffffc9000b871000) created by:
 kernel_clone+0xb8/0x720 kernel/fork.c:2684

The buggy address belongs to the physical page:
page:ffffea000070b400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c2d0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 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 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 18192, tgid 18192 (syz-executor116), ts 443352929422, free_ts 443211991052
 prep_new_page mm/page_alloc.c:2552 [inline]
 get_page_from_freelist+0x1190/0x2f80 mm/page_alloc.c:4325
 __alloc_pages+0x1c7/0x5b0 mm/page_alloc.c:5591
 vm_area_alloc_pages mm/vmalloc.c:2943 [inline]
 __vmalloc_area_node mm/vmalloc.c:3011 [inline]
 __vmalloc_node_range+0x7c8/0xf50 mm/vmalloc.c:3181
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct kernel/fork.c:984 [inline]
 copy_process+0x10db/0x6c40 kernel/fork.c:2100
 kernel_clone+0xb8/0x720 kernel/fork.c:2684
 __do_sys_clone+0xa1/0xe0 kernel/fork.c:2825
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1453 [inline]
 free_pcp_prepare+0x65a/0xb40 mm/page_alloc.c:1503
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page_list+0x172/0xcd0 mm/page_alloc.c:3528
 release_pages+0x31c/0x10c0 mm/swap.c:1042
 tlb_batch_pages_flush+0x85/0x160 mm/mmu_gather.c:97
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu mm/mmu_gather.c:299 [inline]
 tlb_finish_mmu+0x110/0x6c0 mm/mmu_gather.c:391
 exit_mmap+0x1cc/0x620 mm/mmap.c:3047
 __mmput+0xf3/0x440 kernel/fork.c:1209
 exit_mm kernel/exit.c:563 [inline]
 do_exit+0x885/0x2500 kernel/exit.c:856
 do_group_exit+0xb0/0x250 kernel/exit.c:1019
 __do_sys_exit_group kernel/exit.c:1030 [inline]
 __se_sys_exit_group kernel/exit.c:1028 [inline]
 __x64_sys_exit_group+0x35/0x40 kernel/exit.c:1028
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffffc9000b86f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000b86f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1
>ffffc9000b86f980: f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 00 00 00 00
                                     ^
 ffffc9000b86fa00: 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
 ffffc9000b86fa80: 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00
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