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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+0x89/0x90 fs/buffer.c:161
Write of size 4 at addr ffffc90004e771a0 by task ksoftirqd/1/21

CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.3.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x167/0x220 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 kasan_check_range+0x283/0x290 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+0x89/0x90 fs/buffer.c:161
 end_bio_bh_io_sync+0x8d/0xe0 fs/buffer.c:2703
 req_bio_endio block/blk-mq.c:795 [inline]
 blk_update_request+0x3a3/0x1000 block/blk-mq.c:927
 blk_mq_end_request+0x39/0x60 block/blk-mq.c:1054
 blk_complete_reqs block/blk-mq.c:1132 [inline]
 blk_done_softirq+0x83/0x120 block/blk-mq.c:1137
 __do_softirq+0x2ab/0x908 kernel/softirq.c:571
 run_ksoftirqd+0xc5/0x120 kernel/softirq.c:934
 smpboot_thread_fn+0x534/0x890 kernel/smpboot.c:164
 kthread+0x232/0x2b0 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
 [ffffc90004e70000, ffffc90004e79000) created by:
 copy_process+0x3d5/0x3b10 kernel/fork.c:2100

The buggy address belongs to the physical page:
page:ffffea0001ce6840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x739a1
memcg:ffff88801cb1b002
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff88801cb1b002
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 8207, tgid 8207 (syz-executor.3), ts 208600046953, free_ts 207926638164
 prep_new_page mm/page_alloc.c:2552 [inline]
 get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4325
 __alloc_pages+0x255/0x670 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+0x700/0x1080 mm/vmalloc.c:3181
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct+0x575/0x690 kernel/fork.c:984
 copy_process+0x3d5/0x3b10 kernel/fork.c:2100
 kernel_clone+0x19a/0x5f0 kernel/fork.c:2684
 __do_sys_clone kernel/fork.c:2825 [inline]
 __se_sys_clone kernel/fork.c:2809 [inline]
 __x64_sys_clone+0x230/0x280 kernel/fork.c:2809
 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
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 mm/page_alloc.c:1503 [inline]
 free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3387
 free_unref_page_list+0x596/0x830 mm/page_alloc.c:3528
 release_pages+0x1a0f/0x1bc0 mm/swap.c:1042
 tlb_batch_pages_flush mm/mmu_gather.c:97 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu+0xe9/0x1e0 mm/mmu_gather.c:299
 tlb_finish_mmu+0xb6/0x1c0 mm/mmu_gather.c:391
 exit_mmap+0x2a0/0x6c0 mm/mmap.c:3047
 __mmput+0xcb/0x300 kernel/fork.c:1209
 exit_mm+0x1de/0x290 kernel/exit.c:563
 do_exit+0x4f2/0x1d10 kernel/exit.c:856
 do_group_exit+0x1b9/0x280 kernel/exit.c:1019
 get_signal+0x1233/0x12e0 kernel/signal.c:2859
 arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
 __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

Memory state around the buggy address:
 ffffc90004e77080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90004e77100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90004e77180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                  ^
 ffffc90004e77200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90004e77280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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