WARNING: can't dereference registers at ffffffff97656f09 for ip apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1105 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1122 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1163 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1176 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1186 comm=syz-executor1 selinux_nlmsg_perm: 6 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1286 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1358 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1370 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1401 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1424 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1440 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1453 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1494 comm=syz-executor1 ================================================================== BUG: KASAN: stack-out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:290 [inline] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x1595/0x1930 arch/x86/kernel/unwind_orc.c:420 Read of size 8 at addr ffff8801d9107668 by task syz-executor1/1494 CPU: 0 PID: 1494 Comm: syz-executor1 Not tainted 4.14.78+ #26 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 print_address_description+0x60/0x22b mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report.cold.6+0x11b/0x2dd mm/kasan/report.c:409 deref_stack_regs arch/x86/kernel/unwind_orc.c:290 [inline] unwind_next_frame+0x1595/0x1930 arch/x86/kernel/unwind_orc.c:420 perf_callchain_kernel+0x39c/0x540 arch/x86/events/core.c:2354 get_perf_callchain+0x2eb/0x760 kernel/events/callchain.c:217 perf_callchain+0x14a/0x190 kernel/events/callchain.c:190 perf_prepare_sample+0x704/0x13c0 kernel/events/core.c:6140 __perf_event_output kernel/events/core.c:6256 [inline] perf_event_output_forward+0xeb/0x230 kernel/events/core.c:6274 __perf_event_overflow+0x116/0x320 kernel/events/core.c:7510 perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586 perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619 perf_tp_event+0x5e5/0x790 kernel/events/core.c:8048 perf_trace_run_bpf_submit+0x10f/0x170 kernel/events/core.c:8018 perf_trace_lock+0x2f6/0x4c0 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x4dc/0x720 kernel/locking/lockdep.c:4009 rcu_lock_release include/linux/rcupdate.h:249 [inline] rcu_read_unlock include/linux/rcupdate.h:687 [inline] __is_insn_slot_addr+0x139/0x1f0 kernel/kprobes.c:301 is_kprobe_optinsn_slot include/linux/kprobes.h:344 [inline] kernel_text_address+0x7c/0x120 kernel/extable.c:148 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:238 __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:45 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc.part.1+0x4f/0xd0 mm/kasan/kasan.c:551 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=513 sclass=netlink_route_socket pig=1503 comm=syz-executor1 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc_node mm/slub.c:2723 [inline] slab_alloc mm/slub.c:2731 [inline] kmem_cache_alloc+0xe4/0x2b0 mm/slub.c:2736 kmem_cache_zalloc include/linux/slab.h:651 [inline] ebitmap_cpy+0xc4/0x260 security/selinux/ss/ebitmap.c:60 mls_context_cpy security/selinux/ss/context.h:51 [inline] mls_compute_sid+0x24a/0xda0 security/selinux/ss/mls.c:556 security_compute_sid.part.6+0x76f/0x1080 security/selinux/ss/services.c:1725 security_compute_sid security/selinux/ss/services.c:1764 [inline] security_transition_sid+0xcb/0x120 security/selinux/ss/services.c:1764 socket_sockcreate_sid security/selinux/hooks.c:4344 [inline] selinux_socket_post_create+0x4e9/0x690 security/selinux/hooks.c:4395 security_socket_post_create+0x8c/0xc0 security/security.c:1347 __sock_create+0x498/0x600 net/socket.c:1290 sock_create net/socket.c:1314 [inline] SYSC_socket net/socket.c:1344 [inline] SyS_socket+0xdf/0x1d0 net/socket.c:1324 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457569 RSP: 002b:00007f2e8762dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0020000000080003 RDI: 0000000000000010 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2e8762e6d4 R13: 00000000004c4618 R14: 00000000004d78b0 R15: 00000000ffffffff The buggy address belongs to the page: page:ffffea00076441c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x4000000000000000() raw: 4000000000000000 0000000000000000 0000000000000000 00000000ffffffff raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d9107500: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 ffff8801d9107580: f1 04 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 00 00 00 >ffff8801d9107600: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 ^ ffff8801d9107680: f2 f2 f2 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d9107700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================