random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
==================================================================
BUG: KASAN: slab-out-of-bounds in predicate_parse kernel/trace/trace_events_filter.c:557 [inline]
BUG: KASAN: slab-out-of-bounds in process_preds+0x191f/0x19d0 kernel/trace/trace_events_filter.c:1509
Write of size 4 at addr ffff8801d3d02ff0 by task syz-executor120/4499

CPU: 1 PID: 4499 Comm: syz-executor120 Not tainted 4.17.0+ #39
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_store4_noabort+0x17/0x20 mm/kasan/report.c:437
 predicate_parse kernel/trace/trace_events_filter.c:557 [inline]
 process_preds+0x191f/0x19d0 kernel/trace/trace_events_filter.c:1509
 create_filter+0x155/0x270 kernel/trace/trace_events_filter.c:1717
 ftrace_profile_set_filter+0x130/0x2e0 kernel/trace/trace_events_filter.c:2042
 perf_event_set_filter+0x22e/0x1230 kernel/events/core.c:9078
 _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/0x16f0 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:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43fdb9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 6b 45 00 00 c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007fffe723e228 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9
RDX: 0000000020000040 RSI: 0000000040082406 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004016e0
R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 3037:
 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
 kmem_cache_alloc_trace+0x152/0x780 mm/slab.c:3620
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:706 [inline]
 alloc_pipe_info+0x16d/0x580 fs/pipe.c:636
 get_pipe_inode fs/pipe.c:715 [inline]
 create_pipe_files+0xd0/0x940 fs/pipe.c:748
 __do_pipe_flags+0x45/0x250 fs/pipe.c:805
 do_pipe2+0x95/0x2f0 fs/pipe.c:853
 __do_sys_pipe fs/pipe.c:876 [inline]
 __se_sys_pipe fs/pipe.c:874 [inline]
 __x64_sys_pipe+0x33/0x40 fs/pipe.c:874
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 3039:
 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]
 kfree+0xd9/0x260 mm/slab.c:3813
 free_pipe_info+0x253/0x300 fs/pipe.c:687
 put_pipe_info+0xd0/0xf0 fs/pipe.c:559
 pipe_release+0x1de/0x270 fs/pipe.c:580
 __fput+0x353/0x890 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x1e4/0x290 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1aee/0x2730 kernel/exit.c:865
 do_group_exit+0x16f/0x430 kernel/exit.c:968
 __do_sys_exit_group kernel/exit.c:979 [inline]
 __se_sys_exit_group kernel/exit.c:977 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:977
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8801d3d02cc0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 304 bytes to the right of
 512-byte region [ffff8801d3d02cc0, ffff8801d3d02ec0)
The buggy address belongs to the page:
page:ffffea00074f4080 count:1 mapcount:0 mapping:ffff8801da800940 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea00074f4048 ffffea00074f4108 ffff8801da800940
raw: 0000000000000000 ffff8801d3d02040 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d3d02e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8801d3d02f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801d3d02f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff8801d3d03000: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff8801d3d03080: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
==================================================================