* WARNING in intel_pmu_lbr_counters_reorder
@ 2024-09-30 7:46 Ubisectech Sirius
0 siblings, 0 replies; 2+ messages in thread
From: Ubisectech Sirius @ 2024-09-30 7:46 UTC (permalink / raw)
To: linux-kernel; +Cc: peterz, mingo, acme, namhyung
[-- Attachment #1: Type: text/plain, Size: 2865 bytes --]
Hello.
We are Ubisectech Sirius Team, the vulnerability lab of China ValiantSec. Recently, our team has discovered a issue in Linux kernel 6.11.0-rc2-g6a0e38264012. Attached to the email were a PoC file of the issue.
Stack dump:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13222 at arch/x86/events/intel/lbr.c:957 intel_pmu_lbr_counters_reorder.isra.0+0x61f/0x750 arch/x86/events/intel/lbr.c:957
Modules linked in:
CPU: 0 UID: 0 PID: 13222 Comm: syz.3.335 Not tainted 6.11.0-rc2-g6a0e38264012 #49
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:intel_pmu_lbr_counters_reorder.isra.0+0x61f/0x750 arch/x86/events/intel/lbr.c:957
Code: 00 48 8d bb 20 01 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 84 26 ff ff ff e8 ac 96 df 00 e9 1c ff ff ff e8 22 cd 83 00 90 <0f> 0b 90 e9 80 fb ff ff 48 c7 c7 60 87 6c 8d e8 0d c0 8e 03 e9 79
RSP: 0000:ffffc90001d77910 EFLAGS: 00010046
RAX: 0000000080110000 RBX: ffff888000155070 RCX: ffffffff8105486e
RDX: ffff888043692500 RSI: ffffffff81054cee RDI: 0000000000000005
RBP: ffff888000155070 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88802c622bb8 R15: 0000000000000000
FS: 00007f3f01bc8640(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d000 CR3: 000000005c572000 CR4: 0000000000750ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
PKRU: 55555554
Call Trace:
<TASK>
intel_pmu_lbr_save_brstack+0x1ef/0x3b0 arch/x86/events/intel/lbr.c:976
handle_pmi_common+0x744/0xbd0 arch/x86/events/intel/core.c:3118
intel_pmu_handle_irq+0x2b7/0x10b0 arch/x86/events/intel/core.c:3181
perf_event_nmi_handler arch/x86/events/core.c:1747 [inline]
perf_event_nmi_handler+0x4c/0x70 arch/x86/events/core.c:1733
nmi_handle+0x1a6/0x5b0 arch/x86/kernel/nmi.c:151
default_do_nmi+0x88/0x220 arch/x86/kernel/nmi.c:351
exc_nmi+0x262/0x310 arch/x86/kernel/nmi.c:545
asm_exc_nmi+0xb8/0x101 arch/x86/entry/entry_64.S:1192
RIP: 0033:0x7f3f00c4a51a
Code: 00 00 00 ff 89 81 90 00 00 00 75 04 85 c0 74 1c 48 63 44 24 18 48 8d 14 80 48 8d 14 50 48 8d 05 6c 16 25 00 48 83 7c d0 28 00 <74> 0f 48 8b 44 24 08 c7 80 90 00 00 00 16 00 00 00 48 8b 54 24 08
RSP: 002b:00007f3f01bc7fc0 EFLAGS: 00000246
RAX: 00007f3f00e9bb80 RBX: 00007f3f00f35f80 RCX: 00007f3f00f35f80
RDX: 0000000000007a81 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f3f00e1bd8a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3f00f35f80 R15: 00007f3f01ba8000
</TASK>
Thank you for taking the time to read this email and we look forward to working with you further.
[-- Attachment #2: poc.c --]
[-- Type: application/octet-stream, Size: 9812 bytes --]
// autogenerated by syzkaller (https://github.com/google/syzkaller)
#define _GNU_SOURCE
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
static void sleep_ms(uint64_t ms)
{
usleep(ms * 1000);
}
static uint64_t current_time_ms(void)
{
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts))
exit(1);
return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}
#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \
*(type*)(addr) = \
htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \
(((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))
static bool write_file(const char* file, const char* what, ...)
{
char buf[1024];
va_list args;
va_start(args, what);
vsnprintf(buf, sizeof(buf), what, args);
va_end(args);
buf[sizeof(buf) - 1] = 0;
int len = strlen(buf);
int fd = open(file, O_WRONLY | O_CLOEXEC);
if (fd == -1)
return false;
if (write(fd, buf, len) != len) {
int err = errno;
close(fd);
errno = err;
return false;
}
close(fd);
return true;
}
static void kill_and_wait(int pid, int* status)
{
kill(-pid, SIGKILL);
kill(pid, SIGKILL);
for (int i = 0; i < 100; i++) {
if (waitpid(-1, status, WNOHANG | __WALL) == pid)
return;
usleep(1000);
}
DIR* dir = opendir("/sys/fs/fuse/connections");
if (dir) {
for (;;) {
struct dirent* ent = readdir(dir);
if (!ent)
break;
if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
continue;
char abort[300];
snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
ent->d_name);
int fd = open(abort, O_WRONLY);
if (fd == -1) {
continue;
}
if (write(fd, abort, 1) < 0) {
}
close(fd);
}
closedir(dir);
} else {
}
while (waitpid(-1, status, __WALL) != pid) {
}
}
static void setup_test()
{
prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
setpgrp();
write_file("/proc/self/oom_score_adj", "1000");
}
static void execute_one(void);
#define WAIT_FLAGS __WALL
static void loop(void)
{
int iter = 0;
for (;; iter++) {
int pid = fork();
if (pid < 0)
exit(1);
if (pid == 0) {
setup_test();
execute_one();
exit(0);
}
int status = 0;
uint64_t start = current_time_ms();
for (;;) {
sleep_ms(10);
if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
break;
if (current_time_ms() - start < 5000)
continue;
kill_and_wait(pid, &status);
break;
}
}
}
uint64_t r[1] = {0xffffffffffffffff};
void execute_one(void)
{
intptr_t res = 0;
if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
}
*(uint32_t*)0x2001d000 = 1;
*(uint32_t*)0x2001d004 = 0x80;
*(uint8_t*)0x2001d008 = 1;
*(uint8_t*)0x2001d009 = 0;
*(uint8_t*)0x2001d00a = 0;
*(uint8_t*)0x2001d00b = 0;
*(uint32_t*)0x2001d00c = 0;
*(uint64_t*)0x2001d010 = 0x41c1;
*(uint64_t*)0x2001d018 = 0;
*(uint64_t*)0x2001d020 = 0;
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 0, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 1, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 2, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 3, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 4, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 1, 5, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 6, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 7, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 8, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 9, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 10, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 11, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 12, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 13, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 14, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 15, 2);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 17, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 18, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 19, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 20, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 21, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 22, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 23, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 24, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 25, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 26, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 27, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 28, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 29, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 30, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 31, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 32, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 33, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0x2000, 34, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 35, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 36, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 37, 1);
STORE_BY_BITMASK(uint64_t, , 0x2001d028, 0, 38, 26);
*(uint32_t*)0x2001d030 = 0;
*(uint32_t*)0x2001d034 = 0;
*(uint64_t*)0x2001d038 = 0;
*(uint64_t*)0x2001d040 = 0;
*(uint64_t*)0x2001d048 = 0;
*(uint64_t*)0x2001d050 = 0;
*(uint32_t*)0x2001d058 = 0;
*(uint32_t*)0x2001d05c = 0;
*(uint64_t*)0x2001d060 = 0;
*(uint32_t*)0x2001d068 = 0;
*(uint16_t*)0x2001d06c = 0;
*(uint16_t*)0x2001d06e = 0;
*(uint32_t*)0x2001d070 = 0;
*(uint32_t*)0x2001d074 = 0;
*(uint64_t*)0x2001d078 = 0;
res = syscall(__NR_perf_event_open, /*attr=*/0x2001d000ul, /*pid=*/0,
/*cpu=*/-1, /*group=*/-1, /*flags=*/0ul);
if (res != -1)
r[0] = res;
*(uint32_t*)0x20000300 = 4;
*(uint32_t*)0x20000304 = 0x80;
*(uint8_t*)0x20000308 = 0x43;
*(uint8_t*)0x20000309 = 0x81;
*(uint8_t*)0x2000030a = 0;
*(uint8_t*)0x2000030b = 0;
*(uint32_t*)0x2000030c = 0;
*(uint64_t*)0x20000310 = 6;
*(uint64_t*)0x20000318 = 0xc1b06;
*(uint64_t*)0x20000320 = 0xe;
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 0, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 1, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 2, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 3, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 4, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0x10000003, 5, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 6, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 7, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 8, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 9, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 10, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 11, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 12, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 13, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 14, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 15, 2);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 17, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 18, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 19, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 20, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 21, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 22, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 23, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 24, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 25, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 26, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 27, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 28, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 29, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 30, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 31, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 32, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 33, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 34, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 35, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 36, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 37, 1);
STORE_BY_BITMASK(uint64_t, , 0x20000328, 0, 38, 26);
*(uint32_t*)0x20000330 = 0x400000;
*(uint32_t*)0x20000334 = 4;
*(uint64_t*)0x20000338 = 0;
*(uint64_t*)0x20000340 = 9;
*(uint64_t*)0x20000348 = 0x10062;
*(uint64_t*)0x20000350 = 8;
*(uint32_t*)0x20000358 = 0xd;
*(uint32_t*)0x2000035c = 0;
*(uint64_t*)0x20000360 = 9;
*(uint32_t*)0x20000368 = 5;
*(uint16_t*)0x2000036c = 1;
*(uint16_t*)0x2000036e = 0;
*(uint32_t*)0x20000370 = 0;
*(uint32_t*)0x20000374 = 0;
*(uint64_t*)0x20000378 = 5;
syscall(__NR_perf_event_open, /*attr=*/0x20000300ul, /*pid=*/0, /*cpu=*/-1,
/*group=*/r[0], /*flags=*/0ul);
}
int main(void)
{
syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
/*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
/*offset=*/0ul);
syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
/*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
/*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
/*offset=*/0ul);
syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
/*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
/*offset=*/0ul);
const char* reason;
(void)reason;
loop();
return 0;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* WARNING in intel_pmu_lbr_counters_reorder
@ 2024-03-17 12:40 cheung wall
0 siblings, 0 replies; 2+ messages in thread
From: cheung wall @ 2024-03-17 12:40 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Ian Rogers,
Adrian Hunter, Thomas Gleixner, Borislav Petkov, Dave Hansen,
x86, H. Peter Anvin, linux-perf-users, linux-kernel
Hello,
when using Healer to fuzz the latest Linux Kernel, the following crash
was triggered on:
HEAD commit: 90d35da658da8cff0d4ecbb5113f5fac9d00eb72 (tag: v6.8-rc7)
git tree: upstream
console output: https://pastebin.com/raw/LcT7Dv8f
kernel config: https://pastebin.com/raw/aKPdyw3m
C reproducer: https://pastebin.com/raw/twMjJuni
Syzlang reproducer: https://pastebin.com/raw/Yx0zjYTg
If you fix this issue, please add the following tag to the commit:
Reported-by: Qiang Zhang <zzqq0103.hey@gmail.com>
-----------------------------------------------------------------------------
WARNING: CPU: 0 PID: 314 at arch/x86/events/intel/lbr.c:956
intel_pmu_lbr_counters_reorder.isra.0+0xe6/0x4e0
arch/x86/events/intel/lbr.c:956
Modules linked in:
CPU: 0 PID: 314 Comm: syz-executor323 Not tainted 6.8.0-rc7 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
RIP: 0010:intel_pmu_lbr_counters_reorder.isra.0+0xe6/0x4e0
arch/x86/events/intel/lbr.c:956
Code: 0f 85 ff 03 00 00 4c 8b a5 90 00 00 00 48 85 db 0f 85 c5 01 00
00 e8 09 09 5a 00 49 39 ec 0f 84 30 03 00 00 e8 fb 08 5a 00 90 <0f> 0b
90 c7 44 24 14 00 00 00 00 e8 ea 08 5a 00 48 8b 44 24 08 48
RSP: 0000:fffffe06d8a4b8f0 EFLAGS: 00010046
RAX: ffff8881110eaf80 RBX: ffff8881114d8000 RCX: ffffffff8f642ba5
RDX: 0000000080110003 RSI: ffff8881114d8000 RDI: ffff8881114d84a8
RBP: ffff8881114d8000 R08: fffffbfff29954b8 R09: ffffed102229b0d1
R10: ffffed102229b0d0 R11: ffff8881114d8687 R12: dffffc0000000000
R13: ffff8881c0022ec8 R14: ffff8881c0022bb8 R15: fffffe06d8a4bbc0
FS: 0000555555ab4880(0000) GS:ffff8881c0000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff2fe39010 CR3: 0000000105540001 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<NMI>
intel_pmu_lbr_save_brstack+0x1af/0x350 arch/x86/events/intel/lbr.c:975
handle_pmi_common+0x5aa/0x9a0 arch/x86/events/intel/core.c:3058
intel_pmu_handle_irq+0x205/0xc70 arch/x86/events/intel/core.c:3121
perf_event_nmi_handler arch/x86/events/core.c:1743 [inline]
perf_event_nmi_handler+0x42/0x70 arch/x86/events/core.c:1729
nmi_handle+0xaf/0x2e0 arch/x86/kernel/nmi.c:150
default_do_nmi+0x54/0x160 arch/x86/kernel/nmi.c:350
exc_nmi+0x132/0x170 arch/x86/kernel/nmi.c:544
end_repeat_nmi+0xf/0x60
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline]
RIP: 0010:__intel_pmu_enable_all.constprop.0+0xf9/0x350
arch/x86/events/intel/core.c:2248
Code: ea 03 80 3c 02 00 0f 85 f1 01 00 00 4c 8b a3 d0 0d 00 00 b9 8f
03 00 00 49 f7 d4 4d 21 f4 4c 89 e2 44 89 e0 48 c1 ea 20 0f 30 <0f> 1f
44 00 00 e8 2d 69 5b 00 48 8d ab 00 02 00 00 be 08 00 00 00
RSP: 0018:ffff888111bd7980 EFLAGS: 00000002
RAX: 000000000000000f RBX: ffff8881c0022220 RCX: 000000000000038f
RDX: 0000000000000007 RSI: 0000000000000008 RDI: ffff8881c0022ff0
RBP: ffff8881c0022ba8 R08: 0000000000000021 R09: ffffed10380045ff
R10: ffffed10380045fe R11: ffff8881c0022ff7 R12: 000000070000000f
R13: 00000000000000b0 R14: 000000070000000f R15: 0000000000000021
</NMI>
<TASK>
x86_pmu_enable+0x349/0xb20 arch/x86/events/core.c:1356
perf_pmu_enable kernel/events/core.c:1153 [inline]
perf_ctx_enable+0xed/0x170 kernel/events/core.c:706
ctx_resched+0xa0/0xe0 kernel/events/core.c:2740
__perf_install_in_context+0x2f1/0x820 kernel/events/core.c:2807
remote_function kernel/events/core.c:92 [inline]
remote_function+0x111/0x1a0 kernel/events/core.c:72
csd_do_func kernel/smp.c:133 [inline]
generic_exec_single kernel/smp.c:404 [inline]
generic_exec_single+0x14f/0x390 kernel/smp.c:390
smp_call_function_single+0x2bb/0x3a0 kernel/smp.c:647
task_function_call+0xce/0x150 kernel/events/core.c:120
perf_install_in_context+0x23e/0x480 kernel/events/core.c:2909
__do_sys_perf_event_open+0x10a2/0x1d50 kernel/events/core.c:12768
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xb4/0x1b0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7eff2fdbebed
Code: c3 e8 37 2a 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcbbb21e48 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000000bd9b RCX: 00007eff2fdbebed
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000002fd77c40
R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffcbbb21e54
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
---[ end trace 0000000000000000 ]---
INFO: NMI handler (perf_event_nmi_handler) took too long to run: 2.678 msecs
perf: interrupt took too long (20898 > 2500), lowering
kernel.perf_event_max_sample_rate to 9000
perf: interrupt took too long (26124 > 26122), lowering
kernel.perf_event_max_sample_rate to 7000
perf: interrupt took too long (32789 > 32655), lowering
kernel.perf_event_max_sample_rate to 6000
perf: interrupt took too long (41339 > 40986), lowering
kernel.perf_event_max_sample_rate to 4000
perf: interrupt took too long (51743 > 51673), lowering
kernel.perf_event_max_sample_rate to 3000
perf: interrupt took too long (64806 > 64678), lowering
kernel.perf_event_max_sample_rate to 3000
perf: interrupt took too long (81009 > 81007), lowering
kernel.perf_event_max_sample_rate to 2000
perf: interrupt took too long (101467 > 101261), lowering
kernel.perf_event_max_sample_rate to 1000
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
4: 0f 85 f1 01 00 00 jne 0x1fb
a: 4c 8b a3 d0 0d 00 00 mov 0xdd0(%rbx),%r12
11: b9 8f 03 00 00 mov $0x38f,%ecx
16: 49 f7 d4 not %r12
19: 4d 21 f4 and %r14,%r12
1c: 4c 89 e2 mov %r12,%rdx
1f: 44 89 e0 mov %r12d,%eax
22: 48 c1 ea 20 shr $0x20,%rdx
26: 0f 30 wrmsr
* 28: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
2d: e8 2d 69 5b 00 callq 0x5b695f
32: 48 8d ab 00 02 00 00 lea 0x200(%rbx),%rbp
39: be 08 00 00 00 mov $0x8,%esi
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