================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: use-after-free in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline] BUG: KASAN: use-after-free in __refcount_sub_and_test include/linux/refcount.h:272 [inline] BUG: KASAN: use-after-free in __refcount_dec_and_test include/linux/refcount.h:315 [inline] BUG: KASAN: use-after-free in refcount_dec_and_test include/linux/refcount.h:333 [inline] BUG: KASAN: use-after-free in iocb_put fs/aio.c:1162 [inline] BUG: KASAN: use-after-free in io_submit_one+0x54f/0x17d0 fs/aio.c:1883 Write of size 4 at addr ffff88807aa8c0c8 by task syz-executor.0/8650 CPU: 1 PID: 8650 Comm: syz-executor.0 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 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_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline] __refcount_sub_and_test include/linux/refcount.h:272 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] iocb_put fs/aio.c:1162 [inline] io_submit_one+0x54f/0x17d0 fs/aio.c:1883 __do_sys_io_submit fs/aio.c:1939 [inline] __se_sys_io_submit fs/aio.c:1909 [inline] __x64_sys_io_submit+0x148/0x290 fs/aio.c:1909 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+0x44/0xae RIP: 0033:0x7f437c98caf9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f437c102188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f437ca9ff60 RCX: 00007f437c98caf9 RDX: 0000000020000800 RSI: 0000000000000002 RDI: 00007f437ca83000 RBP: 00007f437c9e6ff7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9ec405af R14: 00007f437c102300 R15: 0000000000022000 Allocated by task 8650: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x83/0xb0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3214 [inline] kmem_cache_alloc+0x209/0x390 mm/slub.c:3219 aio_get_req fs/aio.c:1029 [inline] io_submit_one+0xbf/0x17d0 fs/aio.c:1876 __do_sys_io_submit fs/aio.c:1939 [inline] __se_sys_io_submit fs/aio.c:1909 [inline] __x64_sys_io_submit+0x148/0x290 fs/aio.c:1909 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+0x44/0xae Freed by task 8650: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xff/0x130 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1700 [inline] slab_free_freelist_hook+0x81/0x190 mm/slub.c:1725 slab_free mm/slub.c:3483 [inline] kmem_cache_free+0x8a/0x5b0 mm/slub.c:3499 aio_rw_done fs/aio.c:1511 [inline] aio_read+0x284/0x3c0 fs/aio.c:1538 __io_submit_one fs/aio.c:1831 [inline] io_submit_one+0xb84/0x17d0 fs/aio.c:1880 __do_sys_io_submit fs/aio.c:1939 [inline] __se_sys_io_submit fs/aio.c:1909 [inline] __x64_sys_io_submit+0x148/0x290 fs/aio.c:1909 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+0x44/0xae The buggy address belongs to the object at ffff88807aa8c000 which belongs to the cache aio_kiocb of size 216 The buggy address is located 200 bytes inside of 216-byte region [ffff88807aa8c000, ffff88807aa8c0d8) The buggy address belongs to the page: page:ffffea0001eaa300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7aa8c flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff8881411af500 raw: 0000000000000000 00000000800c000c 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 8650, ts 59997502456, free_ts 45298393216 prep_new_page mm/page_alloc.c:2424 [inline] get_page_from_freelist+0xa6f/0x2f50 mm/page_alloc.c:4153 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5375 alloc_slab_page mm/slub.c:1763 [inline] allocate_slab mm/slub.c:1900 [inline] new_slab+0x319/0x490 mm/slub.c:1963 ___slab_alloc+0x923/0xfe0 mm/slub.c:2994 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3081 slab_alloc_node mm/slub.c:3172 [inline] slab_alloc mm/slub.c:3214 [inline] kmem_cache_alloc+0x365/0x390 mm/slub.c:3219 aio_get_req fs/aio.c:1029 [inline] io_submit_one+0xbf/0x17d0 fs/aio.c:1876 __do_sys_io_submit fs/aio.c:1939 [inline] __se_sys_io_submit fs/aio.c:1909 [inline] __x64_sys_io_submit+0x148/0x290 fs/aio.c:1909 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+0x44/0xae page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x2c5/0x780 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3315 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3394 kasan_depopulate_vmalloc_pte+0x5c/0x70 mm/kasan/shadow.c:375 apply_to_pte_range mm/memory.c:2532 [inline] apply_to_pmd_range mm/memory.c:2576 [inline] apply_to_pud_range mm/memory.c:2612 [inline] apply_to_p4d_range mm/memory.c:2648 [inline] __apply_to_page_range+0x4f8/0xbb0 mm/memory.c:2682 kasan_release_vmalloc+0xa7/0xc0 mm/kasan/shadow.c:485 __purge_vmap_area_lazy+0x701/0x2330 mm/vmalloc.c:1704 _vm_unmap_aliases.part.0+0x30a/0x3e0 mm/vmalloc.c:2107 change_page_attr_set_clr+0x19b/0x3b0 arch/x86/mm/pat/set_memory.c:1740 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline] set_memory_ro+0x6e/0xa0 arch/x86/mm/pat/set_memory.c:1943 bpf_jit_binary_lock_ro include/linux/filter.h:890 [inline] bpf_int_jit_compile+0xcac/0x1000 arch/x86/net/bpf_jit_comp.c:2368 bpf_prog_select_runtime+0x372/0x710 kernel/bpf/core.c:1914 bpf_migrate_filter+0x266/0x2f0 net/core/filter.c:1295 bpf_prepare_filter net/core/filter.c:1343 [inline] bpf_prog_create_from_user+0x3b8/0x5c0 net/core/filter.c:1437 seccomp_prepare_filter kernel/seccomp.c:666 [inline] seccomp_prepare_user_filter kernel/seccomp.c:703 [inline] seccomp_set_mode_filter kernel/seccomp.c:1824 [inline] do_seccomp+0x2b1/0x2270 kernel/seccomp.c:1944 __do_sys_prctl+0x659/0xc50 kernel/sys.c:2346 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff88807aa8bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88807aa8c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88807aa8c080: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ^ ffff88807aa8c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807aa8c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================