rpcbind: RPC call returned error 22 ================================================================== 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 ffff8801d3db96f0 by task syz-executor4/10298 CPU: 0 PID: 10298 Comm: syz-executor4 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 rpcbind: RPC call returned error 22 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: 0033:0x455a99 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb24a178c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb24a1796d4 RCX: 0000000000455a99 RDX: 0000000020000200 RSI: 0000000040082406 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c4e70 R14: 00000000004cc5d0 R15: 0000000000000000 Allocated by task 5673: 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] sctp_inetaddr_event+0x4a9/0x880 net/sctp/protocol.c:776 notifier_call_chain+0x178/0x380 kernel/notifier.c:93 __blocking_notifier_call_chain kernel/notifier.c:317 [inline] blocking_notifier_call_chain+0x139/0x170 kernel/notifier.c:328 __inet_insert_ifa+0x83e/0xb80 net/ipv4/devinet.c:519 inet_rtm_newaddr+0xe76/0x1390 net/ipv4/devinet.c:910 rtnetlink_rcv_msg+0x466/0xc10 net/core/rtnetlink.c:4662 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4680 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:645 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:655 ___sys_sendmsg+0x805/0x940 net/socket.c:2161 __sys_sendmsg+0x115/0x270 net/socket.c:2199 __do_sys_sendmsg net/socket.c:2208 [inline] __se_sys_sendmsg net/socket.c:2206 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2206 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 4378: 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 __vunmap+0x333/0x460 mm/vmalloc.c:1532 vfree+0x68/0x100 mm/vmalloc.c:1593 n_tty_close+0xc3/0x130 drivers/tty/n_tty.c:1862 tty_ldisc_close.isra.0+0xb0/0xe0 drivers/tty/tty_ldisc.c:477 tty_ldisc_kill+0x4b/0xc0 drivers/tty/tty_ldisc.c:623 tty_ldisc_hangup+0x2dd/0x640 drivers/tty/tty_ldisc.c:741 __tty_hangup.part.21+0x2da/0x6e0 drivers/tty/tty_io.c:621 __tty_hangup drivers/tty/tty_io.c:571 [inline] tty_vhangup+0x21/0x30 drivers/tty/tty_io.c:694 pty_close+0x3bd/0x510 drivers/tty/pty.c:78 tty_release+0x494/0x12e0 drivers/tty/tty_io.c:1656 __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 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x302/0x360 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801d3db9680 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 48 bytes to the right of 64-byte region [ffff8801d3db9680, ffff8801d3db96c0) The buggy address belongs to the page: page:ffffea00074f6e40 count:1 mapcount:0 mapping:ffff8801da800340 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea000766f348 ffffea00074ac388 ffff8801da800340 raw: 0000000000000000 ffff8801d3db9000 0000000100000020 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d3db9580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801d3db9600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8801d3db9680: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff8801d3db9700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ffff8801d3db9780: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================