================================================================== BUG: KASAN: vmalloc-out-of-bounds in cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 Read of size 8 at addr ffff80001bbf6008 by task syz-executor/4919 CPU: 0 PID: 4919 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+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 print_address_description+0x78/0x30c mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xec/0x15c mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 cleanup_bitmap_list+0x14c/0x46c fs/reiserfs/journal.c:231 cleanup_freed_for_journal_list fs/reiserfs/journal.c:570 [inline] flush_commit_list+0x10f4/0x1a6c fs/reiserfs/journal.c:1139 flush_journal_list+0x254/0x1980 fs/reiserfs/journal.c:1388 flush_used_journal_lists+0xf68/0x126c fs/reiserfs/journal.c:1826 do_journal_end+0x2b1c/0x3ae0 fs/reiserfs/journal.c:-1 journal_end_sync+0x164/0x1d0 fs/reiserfs/journal.c:3535 reiserfs_sync_fs+0xd0/0x14c fs/reiserfs/super.c:78 sync_filesystem+0xe8/0x218 fs/sync.c:56 generic_shutdown_super+0x70/0x2f0 fs/super.c:448 kill_block_super+0x70/0xdc fs/super.c:1427 reiserfs_kill_sb+0x124/0x13c fs/reiserfs/super.c:570 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Memory state around the buggy address: ffff80001bbf5f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffff80001bbf5f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffff80001bbf6000: 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffff80001bbf6080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffff80001bbf6100: 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 ffff80001bbf7000 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=00000002113ce000 [ffff80001bbf7000] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=10000001022ec003, pte=0000000000000000 Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4919 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 : ffff80001f217100 x29: ffff80001f217140 x28: dfff800000000000 x27: ffff8000206192e0 x26: 1ffff000040c325c x25: ffff0000cf85c678 x24: ffff0000cde8e000 x23: ffff0000cf85c018 x22: ffff80001bbf7000 x21: 0000000000000200 x20: 0000000000000201 x19: 0000000000000000 x18: 1fffe0003421a996 x17: 1fffe0003421a996 x16: ffff8000082d647c x15: ffff80001421ed80 x14: ffff0001a10d4cc0 x13: ffff0001a10d4cbc x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80001ae3b210 x8 : 0000000000000001 x7 : 0000000000000000 x6 : ffff8000082459c4 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008c22e04 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+0x10f4/0x1a6c fs/reiserfs/journal.c:1139 flush_journal_list+0x254/0x1980 fs/reiserfs/journal.c:1388 flush_used_journal_lists+0xf68/0x126c fs/reiserfs/journal.c:1826 do_journal_end+0x2b1c/0x3ae0 fs/reiserfs/journal.c:-1 journal_end_sync+0x164/0x1d0 fs/reiserfs/journal.c:3535 reiserfs_sync_fs+0xd0/0x14c fs/reiserfs/super.c:78 sync_filesystem+0xe8/0x218 fs/sync.c:56 generic_shutdown_super+0x70/0x2f0 fs/super.c:448 kill_block_super+0x70/0xdc fs/super.c:1427 reiserfs_kill_sb+0x124/0x13c fs/reiserfs/super.c:570 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 387c6908 34000068 aa1603e0 97f068d1 (f94002d6) ---[ end trace 5e1c769c356f9ecf ]--- ---------------- Code disassembly (best guess): 0: 387c6908 ldrb w8, [x8, x28] 4: 34000068 cbz w8, 0x10 8: aa1603e0 mov x0, x22 c: 97f068d1 bl 0xffffffffffc1a350 * 10: f94002d6 ldr x22, [x22] <-- trapping instruction