loop1: detected capacity change from 0 to 1024 hfsplus: invalid length 256 has been corrected to 255 ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_uni2asc+0x670/0x10f0 fs/hfsplus/unicode.c:186 Read of size 2 at addr ffff0000f60f6a18 by task syz.1.502/5941 CPU: 0 PID: 5941 Comm: syz.1.502 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_load2_noabort+0x2c/0x38 mm/kasan/report_generic.c:349 hfsplus_uni2asc+0x670/0x10f0 fs/hfsplus/unicode.c:186 hfsplus_listxattr+0x4a8/0x9e8 fs/hfsplus/xattr.c:740 vfs_listxattr fs/xattr.c:457 [inline] listxattr+0x29c/0x3cc fs/xattr.c:804 path_listxattr+0xdc/0x1b4 fs/xattr.c:828 __do_sys_llistxattr fs/xattr.c:846 [inline] __se_sys_llistxattr fs/xattr.c:843 [inline] __arm64_sys_llistxattr+0x80/0x94 fs/xattr.c:843 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 5941: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xec/0x178 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] hfsplus_find_init+0x84/0x1bc fs/hfsplus/bfind.c:21 hfsplus_listxattr+0x2fc/0x9e8 fs/hfsplus/xattr.c:700 vfs_listxattr fs/xattr.c:457 [inline] listxattr+0x29c/0x3cc fs/xattr.c:804 path_listxattr+0xdc/0x1b4 fs/xattr.c:828 __do_sys_llistxattr fs/xattr.c:846 [inline] __se_sys_llistxattr fs/xattr.c:843 [inline] __arm64_sys_llistxattr+0x80/0x94 fs/xattr.c:843 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xc0/0xdc mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0x100/0x954 kernel/rcu/tree.c:2849 sctp_transport_destroy net/sctp/transport.c:173 [inline] sctp_transport_put+0xf0/0x174 net/sctp/transport.c:486 sctp_transport_free+0x140/0x158 net/sctp/transport.c:144 sctp_association_free+0x5c0/0x6e0 net/sctp/associola.c:382 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1331 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline] sctp_do_sm+0x2ce0/0x4894 net/sctp/sm_sideeffect.c:1170 sctp_primitive_ABORT+0x98/0xc8 net/sctp/primitive.c:104 sctp_close+0x254/0x790 net/sctp/socket.c:1525 inet_release+0x154/0x1d0 net/ipv4/af_inet.c:430 inet6_release+0x5c/0x78 net/ipv6/af_inet6.c:491 __sock_release net/socket.c:654 [inline] sock_close+0xb4/0x1f8 net/socket.c:1400 __fput+0x1bc/0x7c0 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x270 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137 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_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000f60f6800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 536 bytes inside of 1024-byte region [ffff0000f60f6800, ffff0000f60f6c00) The buggy address belongs to the physical page: page:00000000bbcbffef refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000f60f1000 pfn:0x1360f0 head:00000000bbcbffef order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc000366da00 dead000000000002 ffff0000c0002780 raw: ffff0000f60f1000 000000008010000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000f60f6900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000f60f6980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000f60f6a00: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000f60f6a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000f60f6b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================