================================================================== BUG: KASAN: vmalloc-out-of-bounds in cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 Read of size 8 at addr ffff800020e1d008 by task syz-executor/4431 CPU: 1 PID: 4431 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0x100 mm/kasan/report.c:524 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 cleanup_freed_for_journal_list fs/reiserfs/journal.c:570 [inline] flush_commit_list+0x1018/0x1898 fs/reiserfs/journal.c:1142 flush_journal_list+0x254/0x18e4 fs/reiserfs/journal.c:1391 flush_used_journal_lists+0xf3c/0x1234 fs/reiserfs/journal.c:1829 do_journal_end+0x2ad4/0x3bb0 fs/reiserfs/journal.c:-1 journal_end_sync+0x164/0x1d0 fs/reiserfs/journal.c:3539 reiserfs_sync_fs+0xd0/0x14c fs/reiserfs/super.c:78 sync_filesystem+0xe8/0x218 fs/sync.c:56 generic_shutdown_super+0x70/0x324 fs/super.c:474 kill_block_super+0x70/0xdc fs/super.c:1470 reiserfs_kill_sb+0x124/0x13c fs/reiserfs/super.c:570 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 cleanup_mnt+0x37c/0x404 fs/namespace.c:1182 __cleanup_mnt+0x20/0x30 fs/namespace.c:1189 task_work_run+0x1ec/0x270 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x54c/0x19a8 kernel/exit.c:880 do_group_exit+0x194/0x22c kernel/exit.c:1022 get_signal+0x11d0/0x1310 kernel/signal.c:2871 do_signal arch/arm64/kernel/signal.c:1081 [inline] do_notify_resume+0x290/0x2b0c arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_da+0xb4/0x154 arch/arm64/kernel/entry-common.c:516 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to a 1-page vmalloc region starting at 0xffff800020e1d000 allocated at reiserfs_allocate_list_bitmaps+0x5c/0x204 fs/reiserfs/journal.c:290 The buggy address belongs to the physical page: page:000000007607e326 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10cc69 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff800020e1cf00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffff800020e1cf80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffff800020e1d000: 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffff800020e1d080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffff800020e1d100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== Unable to handle kernel paging request at virtual address ffff800020e1e000 KASAN: probably user-memory-access in range [0x00000001070f0000-0x00000001070f0007] Mem abort info: ESR = 0x0000000096000007 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x07: level 3 translation fault Data abort info: ISV = 0, ISS = 0x00000007 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020e267000 [ffff800020e1e000] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000010a1b0003, pte=0000000000000000 Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4431 Comm: syz-executor Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 02400005 (nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 lr : cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 sp : ffff8000212a6df0 x29: ffff8000212a6e30 x28: dfff800000000000 x27: ffff8000215e92e0 x26: 1ffff000042bd25c x25: ffff0000d2cf4678 x24: ffff0000d2c63000 x23: ffff0000d2cf4018 x22: ffff800020e1e000 x21: 0000000000000200 x20: 0000000000000201 x19: 0000000000000000 x18: ffff800011abbcc0 x17: 0000000000000000 x16: ffff800008042c8c x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008cda7d8 x10: 0000000000000000 x9 : ffff80001c326a10 x8 : 0000000000000001 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000212a67d8 x4 : ffff8000151a4820 x3 : ffff800008cda5ac x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000000 Call trace: cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 cleanup_freed_for_journal_list fs/reiserfs/journal.c:570 [inline] flush_commit_list+0x1018/0x1898 fs/reiserfs/journal.c:1142 flush_journal_list+0x254/0x18e4 fs/reiserfs/journal.c:1391 flush_used_journal_lists+0xf3c/0x1234 fs/reiserfs/journal.c:1829 do_journal_end+0x2ad4/0x3bb0 fs/reiserfs/journal.c:-1 journal_end_sync+0x164/0x1d0 fs/reiserfs/journal.c:3539 reiserfs_sync_fs+0xd0/0x14c fs/reiserfs/super.c:78 sync_filesystem+0xe8/0x218 fs/sync.c:56 generic_shutdown_super+0x70/0x324 fs/super.c:474 kill_block_super+0x70/0xdc fs/super.c:1470 reiserfs_kill_sb+0x124/0x13c fs/reiserfs/super.c:570 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 cleanup_mnt+0x37c/0x404 fs/namespace.c:1182 __cleanup_mnt+0x20/0x30 fs/namespace.c:1189 task_work_run+0x1ec/0x270 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x54c/0x19a8 kernel/exit.c:880 do_group_exit+0x194/0x22c kernel/exit.c:1022 get_signal+0x11d0/0x1310 kernel/signal.c:2871 do_signal arch/arm64/kernel/signal.c:1081 [inline] do_notify_resume+0x290/0x2b0c arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_da+0xb4/0x154 arch/arm64/kernel/entry-common.c:516 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 387c6908 34000068 aa1603e0 97eff0ee (f94002d6) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 387c6908 ldrb w8, [x8, x28] 4: 34000068 cbz w8, 0x10 8: aa1603e0 mov x0, x22 c: 97eff0ee bl 0xffffffffffbfc3c4 * 10: f94002d6 ldr x22, [x22] <-- trapping instruction