autofs4:pid:23828:autofs4_fill_super: called with bogus options ================================================================== BUG: KASAN: slab-out-of-bounds in predicate_parse kernel/trace/trace_events_filter.c:562 [inline] BUG: KASAN: slab-out-of-bounds in process_preds+0x1905/0x19d0 kernel/trace/trace_events_filter.c:1505 Read of size 4 at addr ffff8801d7d12ff0 by task syz-executor7/23839 CPU: 0 PID: 23839 Comm: syz-executor7 Not tainted 4.17.0-rc3+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432 predicate_parse kernel/trace/trace_events_filter.c:562 [inline] process_preds+0x1905/0x19d0 kernel/trace/trace_events_filter.c:1505 create_filter+0x155/0x270 kernel/trace/trace_events_filter.c:1713 ftrace_profile_set_filter+0x130/0x2e0 kernel/trace/trace_events_filter.c:2038 perf_event_set_filter+0x248/0x1230 kernel/events/core.c:9079 _perf_ioctl+0x84c/0x15e0 kernel/events/core.c:5059 perf_ioctl+0x59/0x80 kernel/events/core.c:5110 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455979 RSP: 002b:00007f3092283c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f30922846d4 RCX: 0000000000455979 RDX: 0000000020000000 RSI: 0000000040082406 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000002bf R14: 00000000006f8288 R15: 0000000000000000 Allocated by task 22963: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554 kmem_cache_zalloc include/linux/slab.h:691 [inline] alloc_vfsmnt+0xe0/0x9d0 fs/namespace.c:205 clone_mnt+0x11c/0x1480 fs/namespace.c:1077 copy_tree+0x46c/0xae0 fs/namespace.c:1806 propagate_one+0x4db/0x910 fs/pnode.c:265 propagate_mnt+0x18a/0x3e0 fs/pnode.c:315 attach_recursive_mnt+0x5f8/0xb50 fs/namespace.c:2033 graft_tree+0x1aa/0x240 fs/namespace.c:2133 do_loopback fs/namespace.c:2254 [inline] do_mount+0x2745/0x3070 fs/namespace.c:2842 ksys_mount+0x12d/0x140 fs/namespace.c:3064 __do_sys_mount fs/namespace.c:3078 [inline] __se_sys_mount fs/namespace.c:3075 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 17: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kmem_cache_free+0x86/0x2d0 mm/slab.c:3756 free_vfsmnt+0x6a/0x80 fs/namespace.c:644 delayed_free_vfsmnt+0x16/0x20 fs/namespace.c:649 __rcu_reclaim kernel/rcu/rcu.h:178 [inline] rcu_do_batch kernel/rcu/tree.c:2675 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2930 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2897 [inline] rcu_process_callbacks+0x941/0x15f0 kernel/rcu/tree.c:2914 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285 The buggy address belongs to the object at ffff8801d7d12e00 which belongs to the cache mnt_cache of size 432 The buggy address is located 64 bytes to the right of 432-byte region [ffff8801d7d12e00, ffff8801d7d12fb0) The buggy address belongs to the page: page:ffffea00075f4480 count:1 mapcount:0 mapping:ffff8801d7d12000 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801d7d12000 0000000000000000 0000000100000008 raw: ffffea00072440e0 ffffea0006511660 ffff8801da9887c0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d7d12e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d7d12f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801d7d12f80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ^ ffff8801d7d13000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d7d13080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================