================================================================== BUG: KASAN: out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: out-of-bounds in atomic_dec include/asm-generic/atomic-instrumented.h:244 [inline] BUG: KASAN: out-of-bounds in put_bh include/linux/buffer_head.h:285 [inline] BUG: KASAN: out-of-bounds in end_buffer_read_sync+0x5c/0x90 fs/buffer.c:160 Write of size 4 at addr ffffc90009bafa28 by task ksoftirqd/1/19 CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:105 print_address_description.constprop.0.cold+0xf/0x309 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:436 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_dec include/asm-generic/atomic-instrumented.h:244 [inline] put_bh include/linux/buffer_head.h:285 [inline] end_buffer_read_sync+0x5c/0x90 fs/buffer.c:160 end_bio_bh_io_sync+0xb5/0x100 fs/buffer.c:3001 req_bio_endio block/blk-core.c:263 [inline] blk_update_request+0x738/0x11c0 block/blk-core.c:1438 blk_mq_end_request+0x46/0x480 block/blk-mq.c:565 blk_complete_reqs+0x90/0xc0 block/blk-mq.c:577 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x548/0x8c0 kernel/smpboot.c:164 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffffc90009baf900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 ffffc90009baf980: f1 f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3 f3 00 >ffffc90009bafa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffffc90009bafa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90009bafb00: 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 ==================================================================