INFO: rcu detected stall in __perf_sw_event
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syzbot
Jul 27, 2020, 2:04:18 AM7/27/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 69b94dd6 Linux 4.14.189
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15b92a74900000
kernel config: https://syzkaller.appspot.com/x/.config?x=80d63ff414fa81b0
dashboard link: https://syzkaller.appspot.com/bug?extid=22fa47646f6ba9350797
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+22fa47...@syzkaller.appspotmail.com
loop5: p2 < >
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
loop5: p2 < >
NOHZ: local_softirq_pending 08
INFO: rcu_preempt self-detected stall on CPU
0-...: (10499 ticks this GP) idle=4fe/140000000000001/0 softirq=51101/51101 fqs=5213
(t=10500 jiffies g=14008 c=14007 q=2294)
NMI backtrace for cpu 0
CPU: 0 PID: 22898 Comm: syz-executor.1 Not tainted 4.14.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:__output_copy kernel/events/internal.h:176 [inline]
RIP: 0010:perf_output_read_group kernel/events/core.c:5895 [inline]
RIP: 0010:perf_output_read+0x6e2/0x1090 kernel/events/core.c:5928
RSP: 0018:ffff888064acf290 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffffed100c959ea8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffff888064acf370 RDI: ffff888090d1dcc8
RBP: ffff888064acf370 R08: 0000000000000001 R09: ffffed10121a3b98
R10: ffff888090d1dcc7 R11: 0000007037f4da9c R12: dffffc0000000000
R13: ffffed100c959eaa R14: ffff888064acf528 R15: 0000000000000010
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888064acfa78 EFLAGS: 00010206
RAX: ffffed100c35a000 RBX: 0000000000008000 RCX: 0000000000003acb
RDX: 0000000000008000 RSI: 0000000020ffa000 RDI: ffff888061acc535
RBP: 0000000020ff5acb R08: 0000000000000001 R09: ffffed100c359fff
R10: ffff888061acffff R11: 0000000000000000 R12: ffff888061ac8000
R13: 00007ffffffff000 R14: 0000000020ffdacb R15: ffff888061ac8000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x195/0x690 lib/iov_iter.c:608
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1885 [inline]
skb_copy_to_page_nocache include/net/sock.h:1911 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45c369
RSP: 002b:00007fc719dfec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ba00 RCX: 000000000045c369
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006
RBP: 000000000078bf58 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd110d746f R14: 00007fc719dff9c0 R15: 000000000078bf0c
INFO: rcu_sched self-detected stall on CPU
0-...: (1 GPs behind) idle=4fe/140000000000001/0 softirq=51077/51101 fqs=5195
(t=10500 jiffies g=6564 c=6563 q=40)
NMI backtrace for cpu 0
CPU: 0 PID: 22898 Comm: syz-executor.1 Not tainted 4.14.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:sched_clock_cpu+0x4/0x1b0 kernel/sched/clock.c:358
RSP: 0018:ffff888064acf268 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: ffff8880692c4500 RCX: ffffc9000647b000
RDX: 0000000000040000 RSI: ffffffff8169e609 RDI: 0000000000000000
RBP: ffff888064acf370 R08: 0000000000000001 R09: ffffed10121a3a6a
R10: ffff888090d1d357 R11: 00000070683c7795 R12: dffffc0000000000
R13: ffffed100c959eaa R14: ffff888064acf528 R15: 0000000000000010
local_clock include/linux/sched/clock.h:84 [inline]
cpu_clock_event_update kernel/events/core.c:8828 [inline]
cpu_clock_event_read+0x15/0x30 kernel/events/core.c:8861
perf_output_read_group kernel/events/core.c:5889 [inline]
perf_output_read+0xc28/0x1090 kernel/events/core.c:5928
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888064acfa78 EFLAGS: 00010206
RAX: ffffed100c35a000 RBX: 0000000000008000 RCX: 0000000000003acb
RDX: 0000000000008000 RSI: 0000000020ffa000 RDI: ffff888061acc535
RBP: 0000000020ff5acb R08: 0000000000000001 R09: ffffed100c359fff
R10: ffff888061acffff R11: 0000000000000000 R12: ffff888061ac8000
R13: 00007ffffffff000 R14: 0000000020ffdacb R15: ffff888061ac8000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x195/0x690 lib/iov_iter.c:608
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1885 [inline]
skb_copy_to_page_nocache include/net/sock.h:1911 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45c369
RSP: 002b:00007fc719dfec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ba00 RCX: 000000000045c369
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006
RBP: 000000000078bf58 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd110d746f R14: 00007fc719dff9c0 R15: 000000000078bf0c
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 69b94dd6 Linux 4.14.189
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15b92a74900000
kernel config: https://syzkaller.appspot.com/x/.config?x=80d63ff414fa81b0
dashboard link: https://syzkaller.appspot.com/bug?extid=22fa47646f6ba9350797
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+22fa47...@syzkaller.appspotmail.com
loop5: p2 < >
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
loop5: p2 < >
NOHZ: local_softirq_pending 08
INFO: rcu_preempt self-detected stall on CPU
0-...: (10499 ticks this GP) idle=4fe/140000000000001/0 softirq=51101/51101 fqs=5213
(t=10500 jiffies g=14008 c=14007 q=2294)
NMI backtrace for cpu 0
CPU: 0 PID: 22898 Comm: syz-executor.1 Not tainted 4.14.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:__output_copy kernel/events/internal.h:176 [inline]
RIP: 0010:perf_output_read_group kernel/events/core.c:5895 [inline]
RIP: 0010:perf_output_read+0x6e2/0x1090 kernel/events/core.c:5928
RSP: 0018:ffff888064acf290 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffffed100c959ea8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffff888064acf370 RDI: ffff888090d1dcc8
RBP: ffff888064acf370 R08: 0000000000000001 R09: ffffed10121a3b98
R10: ffff888090d1dcc7 R11: 0000007037f4da9c R12: dffffc0000000000
R13: ffffed100c959eaa R14: ffff888064acf528 R15: 0000000000000010
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888064acfa78 EFLAGS: 00010206
RAX: ffffed100c35a000 RBX: 0000000000008000 RCX: 0000000000003acb
RDX: 0000000000008000 RSI: 0000000020ffa000 RDI: ffff888061acc535
RBP: 0000000020ff5acb R08: 0000000000000001 R09: ffffed100c359fff
R10: ffff888061acffff R11: 0000000000000000 R12: ffff888061ac8000
R13: 00007ffffffff000 R14: 0000000020ffdacb R15: ffff888061ac8000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x195/0x690 lib/iov_iter.c:608
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1885 [inline]
skb_copy_to_page_nocache include/net/sock.h:1911 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45c369
RSP: 002b:00007fc719dfec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ba00 RCX: 000000000045c369
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006
RBP: 000000000078bf58 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd110d746f R14: 00007fc719dff9c0 R15: 000000000078bf0c
INFO: rcu_sched self-detected stall on CPU
0-...: (1 GPs behind) idle=4fe/140000000000001/0 softirq=51077/51101 fqs=5195
(t=10500 jiffies g=6564 c=6563 q=40)
NMI backtrace for cpu 0
CPU: 0 PID: 22898 Comm: syz-executor.1 Not tainted 4.14.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:sched_clock_cpu+0x4/0x1b0 kernel/sched/clock.c:358
RSP: 0018:ffff888064acf268 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: ffff8880692c4500 RCX: ffffc9000647b000
RDX: 0000000000040000 RSI: ffffffff8169e609 RDI: 0000000000000000
RBP: ffff888064acf370 R08: 0000000000000001 R09: ffffed10121a3a6a
R10: ffff888090d1d357 R11: 00000070683c7795 R12: dffffc0000000000
R13: ffffed100c959eaa R14: ffff888064acf528 R15: 0000000000000010
local_clock include/linux/sched/clock.h:84 [inline]
cpu_clock_event_update kernel/events/core.c:8828 [inline]
cpu_clock_event_read+0x15/0x30 kernel/events/core.c:8861
perf_output_read_group kernel/events/core.c:5889 [inline]
perf_output_read+0xc28/0x1090 kernel/events/core.c:5928
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888064acfa78 EFLAGS: 00010206
RAX: ffffed100c35a000 RBX: 0000000000008000 RCX: 0000000000003acb
RDX: 0000000000008000 RSI: 0000000020ffa000 RDI: ffff888061acc535
RBP: 0000000020ff5acb R08: 0000000000000001 R09: ffffed100c359fff
R10: ffff888061acffff R11: 0000000000000000 R12: ffff888061ac8000
R13: 00007ffffffff000 R14: 0000000020ffdacb R15: ffff888061ac8000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x195/0x690 lib/iov_iter.c:608
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1885 [inline]
skb_copy_to_page_nocache include/net/sock.h:1911 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45c369
RSP: 002b:00007fc719dfec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ba00 RCX: 000000000045c369
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006
RBP: 000000000078bf58 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd110d746f R14: 00007fc719dff9c0 R15: 000000000078bf0c
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Oct 2, 2020, 2:57:19 PM10/2/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=171970af900000
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e5f1b7900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+22fa47...@syzkaller.appspotmail.com
(t=10501 jiffies g=4384 c=4383 q=28604)
RIP: 0010:check_memory_region+0x17/0x170 mm/kasan/kasan.c:267
RSP: 0018:ffff8880a0727268 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: ffff7fffffffffff RBX: 0000000000000000 RCX: ffffffff8169efd9
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffff8880a0727360
RBP: ffff88808f2041b0 R08: 0000000000000000 R09: ffff88821fff700f
R10: ffff88821fff7017 R11: 0000003efa49bf0a R12: 0000000000000010
R13: ffff8880a0727360 R14: ffff8880a0727528 R15: 0000000000000010
memcpy+0x20/0x50 mm/kasan/kasan.c:302
memcpy include/linux/string.h:372 [inline]
memcpy_common kernel/events/internal.h:172 [inline]
__output_copy kernel/events/internal.h:176 [inline]
perf_output_read_group kernel/events/core.c:5895 [inline]
perf_output_read+0x6c9/0x1090 kernel/events/core.c:5928
RAX: ffffed1013b0a000 RBX: 0000000000008000 RCX: 0000000000000acb
RDX: 0000000000008000 RSI: 0000000020e6d000 RDI: ffff88809d84f535
RBP: 0000000020e65acb R08: 0000000000000001 R09: ffffed1013b09fff
R10: ffff88809d84ffff R11: 0000000000000000 R12: ffff88809d848000
R13: 00007ffffffff000 R14: 0000000020e6dacb R15: ffff88809d848000
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1889 [inline]
skb_copy_to_page_nocache include/net/sock.h:1915 [inline]
RSP: 002b:00007f919d024da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004498a9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000004
RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c
R13: 00007ffc0d5347ff R14: 00007f919d0259c0 R15: 0000000000000064
INFO: rcu_sched detected stalls on CPUs/tasks:
0-...: (10497 ticks this GP) idle=176/140000000000000/0 softirq=15477/15477 fqs=5233
(detected by 1, t=10548 jiffies, g=2309, c=2308, q=1238)
Sending NMI from CPU 1 to CPUs 0:
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:87 [inline]
RIP: 0010:pvclock_clocksource_read+0x1e1/0x4f0 arch/x86/kernel/pvclock.c:87
RSP: 0018:ffff8880a0727190 EFLAGS: 00000246
RAX: 0000003f07a621c1 RBX: ffff88821fff7000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffff88821fff7018 R09: ffff88821fff700f
R10: ffff88821fff7017 R11: ffff88821fff701b R12: ffff88821fff7003
R13: ffffed1043ffee01 R14: ffff88821fff701d R15: ffff88821fff7010
FS: 00007f919d025700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000800000001 CR3: 000000008ddc0000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kvm_clock_read+0x1f/0x30 arch/x86/kernel/kvmclock.c:88
kvm_sched_clock_read+0x5/0x10 arch/x86/kernel/kvmclock.c:100
paravirt_sched_clock arch/x86/include/asm/paravirt.h:175 [inline]
sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:228
sched_clock_cpu+0x18/0x1b0 kernel/sched/clock.c:363
RAX: ffffed1013b0a000 RBX: 0000000000008000 RCX: 0000000000000acb
RDX: 0000000000008000 RSI: 0000000020e6d000 RDI: ffff88809d84f535
RBP: 0000000020e65acb R08: 0000000000000001 R09: ffffed1013b09fff
R10: ffff88809d84ffff R11: 0000000000000000 R12: ffff88809d848000
R13: 00007ffffffff000 R14: 0000000020e6dacb R15: ffff88809d848000
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1889 [inline]
skb_copy_to_page_nocache include/net/sock.h:1915 [inline]
RSP: 002b:00007f919d024da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004498a9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000004
RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c
R13: 00007ffc0d5347ff R14: 00007f919d0259c0 R15: 0000000000000064
Code: 03 0f b6 14 2a 40 38 f2 40 0f 9e c6 84 d2 0f 95 c2 40 84 d6 0f 85 c1 01 00 00 4c 89 d2 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 <40> 84 d6 0f 85 a7 01 00 00 4c 89 f2 48 8b 7b 10 4c 89 f1 48 c1
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=171970af900000
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
dashboard link: https://syzkaller.appspot.com/bug?extid=22fa47646f6ba9350797
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f18a1f900000
compiler: gcc (GCC) 10.1.0-syz 20200507
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e5f1b7900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+22fa47...@syzkaller.appspotmail.com
INFO: rcu_preempt self-detected stall on CPU
0-...: (10499 ticks this GP) idle=176/140000000000001/0 softirq=15476/15477 fqs=5234
(t=10501 jiffies g=4384 c=4383 q=28604)
NMI backtrace for cpu 0
CPU: 0 PID: 9987 Comm: syz-executor212 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
update_process_times+0x28/0xa0 kernel/time/timer.c:1591
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x464/0xd99 kernel/rcu/tree.c:2792
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:251 [inline]
tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:check_memory_region+0x17/0x170 mm/kasan/kasan.c:267
RSP: 0018:ffff8880a0727268 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: ffff7fffffffffff RBX: 0000000000000000 RCX: ffffffff8169efd9
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffff8880a0727360
RBP: ffff88808f2041b0 R08: 0000000000000000 R09: ffff88821fff700f
R10: ffff88821fff7017 R11: 0000003efa49bf0a R12: 0000000000000010
R13: ffff8880a0727360 R14: ffff8880a0727528 R15: 0000000000000010
memcpy+0x20/0x50 mm/kasan/kasan.c:302
memcpy include/linux/string.h:372 [inline]
memcpy_common kernel/events/internal.h:172 [inline]
__output_copy kernel/events/internal.h:176 [inline]
perf_output_read_group kernel/events/core.c:5895 [inline]
perf_output_read+0x6c9/0x1090 kernel/events/core.c:5928
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff8880a0727a78 EFLAGS: 00010206
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RAX: ffffed1013b0a000 RBX: 0000000000008000 RCX: 0000000000000acb
RDX: 0000000000008000 RSI: 0000000020e6d000 RDI: ffff88809d84f535
RBP: 0000000020e65acb R08: 0000000000000001 R09: ffffed1013b09fff
R10: ffff88809d84ffff R11: 0000000000000000 R12: ffff88809d848000
R13: 00007ffffffff000 R14: 0000000020e6dacb R15: ffff88809d848000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x197/0x690 lib/iov_iter.c:608
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1889 [inline]
skb_copy_to_page_nocache include/net/sock.h:1915 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4498a9
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RSP: 002b:00007f919d024da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004498a9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000004
RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c
R13: 00007ffc0d5347ff R14: 00007f919d0259c0 R15: 0000000000000064
INFO: rcu_sched detected stalls on CPUs/tasks:
0-...: (10497 ticks this GP) idle=176/140000000000000/0 softirq=15477/15477 fqs=5233
(detected by 1, t=10548 jiffies, g=2309, c=2308, q=1238)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9987 Comm: syz-executor212 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808974e540 task.stack: ffff8880a0720000
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:87 [inline]
RIP: 0010:pvclock_clocksource_read+0x1e1/0x4f0 arch/x86/kernel/pvclock.c:87
RSP: 0018:ffff8880a0727190 EFLAGS: 00000246
RAX: 0000003f07a621c1 RBX: ffff88821fff7000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffff88821fff7018 R09: ffff88821fff700f
R10: ffff88821fff7017 R11: ffff88821fff701b R12: ffff88821fff7003
R13: ffffed1043ffee01 R14: ffff88821fff701d R15: ffff88821fff7010
FS: 00007f919d025700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000800000001 CR3: 000000008ddc0000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kvm_clock_read+0x1f/0x30 arch/x86/kernel/kvmclock.c:88
kvm_sched_clock_read+0x5/0x10 arch/x86/kernel/kvmclock.c:100
paravirt_sched_clock arch/x86/include/asm/paravirt.h:175 [inline]
sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:228
sched_clock_cpu+0x18/0x1b0 kernel/sched/clock.c:363
local_clock include/linux/sched/clock.h:84 [inline]
cpu_clock_event_update kernel/events/core.c:8828 [inline]
cpu_clock_event_read+0x15/0x30 kernel/events/core.c:8861
perf_output_read_group kernel/events/core.c:5889 [inline]
perf_output_read+0xc28/0x1090 kernel/events/core.c:5928
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff8880a0727a78 EFLAGS: 00010206
cpu_clock_event_update kernel/events/core.c:8828 [inline]
cpu_clock_event_read+0x15/0x30 kernel/events/core.c:8861
perf_output_read_group kernel/events/core.c:5889 [inline]
perf_output_read+0xc28/0x1090 kernel/events/core.c:5928
perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5970
__perf_event_output kernel/events/core.c:6283 [inline]
perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6296
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7541
perf_swevent_overflow kernel/events/core.c:7617 [inline]
perf_swevent_event+0x299/0x460 kernel/events/core.c:7645
do_perf_sw_event kernel/events/core.c:7758 [inline]
___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7789
__perf_sw_event+0x4f/0x100 kernel/events/core.c:7801
perf_sw_event include/linux/perf_event.h:1046 [inline]
__do_page_fault+0x6c1/0xb50 arch/x86/mm/fault.c:1483
page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RAX: ffffed1013b0a000 RBX: 0000000000008000 RCX: 0000000000000acb
RDX: 0000000000008000 RSI: 0000000020e6d000 RDI: ffff88809d84f535
RBP: 0000000020e65acb R08: 0000000000000001 R09: ffffed1013b09fff
R10: ffff88809d84ffff R11: 0000000000000000 R12: ffff88809d848000
R13: 00007ffffffff000 R14: 0000000020e6dacb R15: ffff88809d848000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
_copy_from_iter_full+0x197/0x690 lib/iov_iter.c:608
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
copy_from_iter_full include/linux/uio.h:126 [inline]
skb_do_copy_data_nocache include/net/sock.h:1889 [inline]
skb_copy_to_page_nocache include/net/sock.h:1915 [inline]
tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4498a9
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
SYSC_sendto net/socket.c:1763 [inline]
SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RSP: 002b:00007f919d024da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004498a9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000004
RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c
R13: 00007ffc0d5347ff R14: 00007f919d0259c0 R15: 0000000000000064
Code: 03 0f b6 14 2a 40 38 f2 40 0f 9e c6 84 d2 0f 95 c2 40 84 d6 0f 85 c1 01 00 00 4c 89 d2 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 <40> 84 d6 0f 85 a7 01 00 00 4c 89 f2 48 8b 7b 10 4c 89 f1 48 c1
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