REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: use-after-free in test_bit_le include/asm-generic/bitops/le.h:21 [inline] BUG: KASAN: use-after-free in reiserfs_readdir_inode+0x5d8/0x14c0 fs/reiserfs/dir.c:147 Read of size 8 at addr ffff8880706a7000 by task syz-executor463/3541 CPU: 1 PID: 3541 Comm: syz-executor463 Not tainted 6.1.27-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __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 include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] test_bit_le include/asm-generic/bitops/le.h:21 [inline] reiserfs_readdir_inode+0x5d8/0x14c0 fs/reiserfs/dir.c:147 iterate_dir+0x224/0x560 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb60f4c32e9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 17 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffda609aa18 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007ffda609aa68 RCX: 00007fb60f4c32e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007ffda609ab40 R09: 00007ffda609ab40 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda609aa60 R13: 00007ffda609ab40 R14: 431bde82d7b634db R15: 00007ffda609aa40 The buggy address belongs to the physical page: page:ffffea0001c1a9c0 refcount:1 mapcount:1 mapping:0000000000000000 index:0x55be18401 pfn:0x706a7 memcg:ffff88813ff58000 anon flags: 0xfff800000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff800000a0014 ffffea000048b888 ffffea0001e6a648 ffff888028074dd1 raw: 000000055be18401 0000000000000000 0000000100000000 ffff88813ff58000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 3537, tgid 3537 (udevd), ts 84425568408, free_ts 15349359611 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 __folio_alloc+0xf/0x30 mm/page_alloc.c:5591 vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2239 alloc_page_vma include/linux/gfp.h:284 [inline] wp_page_copy+0x289/0x1740 mm/memory.c:3114 handle_pte_fault mm/memory.c:4982 [inline] __handle_mm_fault mm/memory.c:5106 [inline] handle_mm_fault+0x2522/0x5330 mm/memory.c:5227 do_user_addr_fault arch/x86/mm/fault.c:1428 [inline] handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x58d/0x790 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page+0x98/0x570 mm/page_alloc.c:3484 free_contig_range+0x9a/0x150 mm/page_alloc.c:9519 destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354 do_one_initcall+0x265/0x8f0 init/main.c:1303 do_initcall_level+0x157/0x207 init/main.c:1376 do_initcalls+0x49/0x86 init/main.c:1392 kernel_init_freeable+0x473/0x61f init/main.c:1631 kernel_init+0x19/0x290 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Memory state around the buggy address: ffff8880706a6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880706a6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880706a7000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8880706a7080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880706a7100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================