loop0: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 65030 in B*Tree hfsplus: request for non-existent node 65030 in B*Tree ================================================================== BUG: KASAN: use-after-free in memcpy_from_page include/linux/highmem.h:417 [inline] BUG: KASAN: use-after-free in hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] BUG: KASAN: use-after-free in hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] BUG: KASAN: use-after-free in hfsplus_bnode_dump+0x3f0/0xa50 fs/hfsplus/bnode.c:305 Read of size 2 at addr ffff00000000103e by task syz-executor572/6163 CPU: 1 PID: 6163 Comm: syz-executor572 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x174/0x514 mm/kasan/report.c:488 kasan_report+0xd8/0x138 mm/kasan/report.c:601 kasan_check_range+0x254/0x294 mm/kasan/generic.c:189 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 memcpy_from_page include/linux/highmem.h:417 [inline] hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] hfsplus_bnode_dump+0x3f0/0xa50 fs/hfsplus/bnode.c:305 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1dc/0x3e4 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x214/0x348 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x990/0xd58 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2d0/0x690 fs/hfsplus/dir.c:385 hfsplus_rename+0xd0/0x1b0 fs/hfsplus/dir.c:547 vfs_rename+0x9bc/0xc84 fs/namei.c:4879 do_renameat2+0x9c8/0xe40 fs/namei.c:5036 __do_sys_renameat2 fs/namei.c:5070 [inline] __se_sys_renameat2 fs/namei.c:5067 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5067 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 The buggy address belongs to the physical page: page:0000000036163a36 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x40001 flags: 0x1ffc00000000000(node=0|zone=0|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 01ffc00000000000 fffffc0000000048 fffffc0000000048 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000000000f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000000000f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff000000001000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff000000001080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000000001100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== Unable to handle kernel paging request at virtual address ffff600665335a7f KASAN: probably wild-memory-access in range [0xffff0033299ad3f8-0xffff0033299ad3ff] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001adbb8000 [ffff600665335a7f] pgd=0000000234192003, p4d=0000000234192003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6163 Comm: syz-executor572 Tainted: G B 6.8.0-rc2-syzkaller-g41bccc98fb79 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : bytes_is_nonzero mm/kasan/generic.c:87 [inline] pc : memory_is_nonzero mm/kasan/generic.c:104 [inline] pc : memory_is_poisoned_n mm/kasan/generic.c:129 [inline] pc : memory_is_poisoned mm/kasan/generic.c:161 [inline] pc : check_region_inline mm/kasan/generic.c:180 [inline] pc : kasan_check_range+0x64/0x294 mm/kasan/generic.c:189 lr : __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 sp : ffff800097867100 x29: ffff800097867100 x28: 0000000000000002 x27: fffffbffff000000 x26: 0000000000000000 x25: ffff0000cca66b18 x24: ffff0000cca66aba x23: 00000000ffffeffe x22: ffff800081153fbc x21: ffff8000978671f0 x20: ffff0033299ad3fe x19: 0000000000000002 x18: ffff8000978664c0 x17: 0000000000000000 x16: ffff80008ac972c0 x15: 0000000000000001 x14: 1fffe00665335a7f x13: 00000000000000ff x12: ffffffffffffffff x11: ffff600665335a7f x10: 1fffe00665335a7f x9 : dfff800000000000 x8 : ffff0033299ad3ff x7 : 0000000000000001 x6 : 0000000000000000 x5 : ffff8000978671f2 x4 : ffff000000000042 x3 : ffff800081153fbc x2 : 0000000000000000 x1 : 0000000000000002 x0 : ffff0033299ad3fe Call trace: bytes_is_nonzero mm/kasan/generic.c:86 [inline] memory_is_nonzero mm/kasan/generic.c:104 [inline] memory_is_poisoned_n mm/kasan/generic.c:129 [inline] memory_is_poisoned mm/kasan/generic.c:161 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x64/0x294 mm/kasan/generic.c:189 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 memcpy_from_page include/linux/highmem.h:417 [inline] hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] hfsplus_bnode_dump+0x3f0/0xa50 fs/hfsplus/bnode.c:305 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1dc/0x3e4 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x214/0x348 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x990/0xd58 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2d0/0x690 fs/hfsplus/dir.c:385 hfsplus_rename+0xd0/0x1b0 fs/hfsplus/dir.c:547 vfs_rename+0x9bc/0xc84 fs/namei.c:4879 do_renameat2+0x9c8/0xe40 fs/namei.c:5036 __do_sys_renameat2 fs/namei.c:5070 [inline] __se_sys_renameat2 fs/namei.c:5067 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5067 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: 5400014c b4000b8f aa2a03ec 8b0e018c (3940016d) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 5400014c b.gt 0x28 4: b4000b8f cbz x15, 0x174 8: aa2a03ec mvn x12, x10 c: 8b0e018c add x12, x12, x14 * 10: 3940016d ldrb w13, [x11] <-- trapping instruction