bpfilter breaks IPT_SO_GET_INFO

[Dmitry Vyukov]

Hi,

I am having some problem with upstream kernel and bpfilter. The
manifestation is that IPT_SO_GET_INFO on an ipv4 socket works, then
something (that I can't fully localize but can reproduce) happens and
then IPT_SO_GET_INFO starts permanently returning 256.

Here is litmus program:

#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <linux/net.h>
#include <linux/netfilter_ipv4/ip_tables.h>
int main()
{
    int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    struct ipt_getinfo info;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, "filter");
    socklen_t optlen = sizeof(info);
    getsockopt(fd, SOL_IP, IPT_SO_GET_INFO, &info, &optlen);
    return 0;
}

Initially when I run it under strace I get:

getsockopt(3, SOL_IP, 0x40 /* IP_??? */,
"filter\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., [84])
= 0

Then I run this program (potentially several times, aborting with
ctrl+C after random time):

https://gist.githubusercontent.com/dvyukov/ec92310bc0f83bf7d170781a04d01547/raw/fa1983783bcd39a29eef4507984e31bf01bedd93/gistfile1.txt

Now the litmus program always fails with:

getsockopt(3, SOL_IP, 0x40 /* IP_??? */,
"filter\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., [84])
= 256

I am currently on upstream commit
28619527b8a712590c93d0a9e24b4425b9376a8c, my .config is attached. I
don't know what is bpfilter, I see it mentions some umh, if it
requires some additional setup I don't it, i.e. I don't install any
userspace modules/helpers.

I've also attached kernel trace of the failing getsockopt syscall, it
seem to bail out somewhere in umh.c.

This is pretty unpleasant issue for syzkaller as it hits this all the time.

Thanks
__x64_sys_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/socket.c:1945
__sys_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/socket.c:1925
fdget
/usr/local/google/home/dvyukov/src/linux/./include/linux/file.h:60
sockfd_lookup_light
/usr/local/google/home/dvyukov/src/linux/net/socket.c:470
__fdget
/usr/local/google/home/dvyukov/src/linux/fs/file.c:749
__fget_light
/usr/local/google/home/dvyukov/src/linux/fs/file.c:732
__fcheck_files
/usr/local/google/home/dvyukov/src/linux/./include/linux/fdtable.h:84
__fget_light
/usr/local/google/home/dvyukov/src/linux/fs/file.c:736
__fcheck_files
/usr/local/google/home/dvyukov/src/linux/./include/linux/fdtable.h:87
__fget_light
/usr/local/google/home/dvyukov/src/linux/fs/file.c:736
__fget_light
/usr/local/google/home/dvyukov/src/linux/fs/file.c:737 (discriminator 1)
__fget_light
/usr/local/google/home/dvyukov/src/linux/fs/file.c:746
sock_from_file
/usr/local/google/home/dvyukov/src/linux/net/socket.c:429
sockfd_lookup_light
/usr/local/google/home/dvyukov/src/linux/net/socket.c:475
sock_from_file
/usr/local/google/home/dvyukov/src/linux/net/socket.c:430
sockfd_lookup_light
/usr/local/google/home/dvyukov/src/linux/net/socket.c:475
sockfd_lookup_light
/usr/local/google/home/dvyukov/src/linux/net/socket.c:477
sockfd_lookup_light
/usr/local/google/home/dvyukov/src/linux/net/socket.c:483
__sys_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/socket.c:1927
security_socket_getsockopt
/usr/local/google/home/dvyukov/src/linux/security/security.c:1431
security_socket_getsockopt
/usr/local/google/home/dvyukov/src/linux/security/security.c:1431 (discriminator 19)
apparmor_socket_getsockopt
/usr/local/google/home/dvyukov/src/linux/security/apparmor/lsm.c:1001
aa_sock_opt_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/lsm.c:986
aa_sock_opt_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/lsm.c:987
aa_sock_opt_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/lsm.c:988
aa_sock_opt_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/lsm.c:990
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:167
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:168 (discriminator 3)
aa_current_raw_label
/usr/local/google/home/dvyukov/src/linux/security/apparmor/include/cred.h:79 (discriminator 3)
begin_current_label_crit_section
/usr/local/google/home/dvyukov/src/linux/security/apparmor/include/cred.h:152 (discriminator 3)
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:171 (discriminator 3)
begin_current_label_crit_section
/usr/local/google/home/dvyukov/src/linux/security/apparmor/include/cred.h:154
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:171
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:172
aa_label_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:150
aa_label_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:150 (discriminator 1)
aa_label_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:150
aa_label_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:155 (discriminator 3)
aa_label_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:148
end_current_label_crit_section
/usr/local/google/home/dvyukov/src/linux/security/apparmor/include/cred.h:112
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:173
aa_sk_perm
/usr/local/google/home/dvyukov/src/linux/security/apparmor/net.c:163 (discriminator 3)
security_socket_getsockopt
/usr/local/google/home/dvyukov/src/linux/security/security.c:1431 (discriminator 10)
security_socket_getsockopt
/usr/local/google/home/dvyukov/src/linux/security/security.c:1432 (discriminator 20)
__sys_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/socket.c:1931
__sys_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/socket.c:1937
sock_common_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2995
tcp_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/tcp.c:3582
tcp_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/tcp.c:3583
ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1562
getsockopt_needs_rtnl
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1302
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1314
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1318
ip_mroute_opt
/usr/local/google/home/dvyukov/src/linux/./include/linux/mroute.h:15
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1321
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1324
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4571
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4573
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4575
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4578
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4578
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4580
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1326
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1329
lock_sock
/usr/local/google/home/dvyukov/src/linux/./include/net/sock.h:1491
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1331
lock_sock_nested
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2831
lock_sock_nested
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2835
local_bh_enable
/usr/local/google/home/dvyukov/src/linux/./include/linux/bottom_half.h:32
lock_sock_nested
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2841
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:39
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:23
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:24
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_enable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:40
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:27
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:30
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1529
spin_lock_bh
/usr/local/google/home/dvyukov/src/linux/./include/linux/spinlock.h:334
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2847
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2854
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2855
tcp_release_cb
/usr/local/google/home/dvyukov/src/linux/net/ipv4/tcp_output.c:864
tcp_release_cb
/usr/local/google/home/dvyukov/src/linux/net/ipv4/tcp_output.c:897
sock_release_ownership
/usr/local/google/home/dvyukov/src/linux/./include/net/sock.h:1452
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2857
sock_release_ownership
/usr/local/google/home/dvyukov/src/linux/./include/net/sock.h:1456
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2857
waitqueue_active
/usr/local/google/home/dvyukov/src/linux/./include/linux/wait.h:126
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2858
spin_unlock_bh
/usr/local/google/home/dvyukov/src/linux/./include/linux/spinlock.h:374
release_sock
/usr/local/google/home/dvyukov/src/linux/net/core/sock.c:2860
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:39
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:23
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:24
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_enable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:40
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:27
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:30
do_ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1312 (discriminator 1)
ip_getsockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/ip_sockglue.c:1566
bpfilter_ip_get_sockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/bpfilter/sockopt.c:39
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4571
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4573
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4575
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4578
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4578
__might_fault
/usr/local/google/home/dvyukov/src/linux/mm/memory.c:4580
bpfilter_ip_get_sockopt
/usr/local/google/home/dvyukov/src/linux/net/ipv4/bpfilter/sockopt.c:42
bpfilter_mbox_request
/usr/local/google/home/dvyukov/src/linux/net/ipv4/bpfilter/sockopt.c:17
bpfilter_mbox_request
/usr/local/google/home/dvyukov/src/linux/net/ipv4/bpfilter/sockopt.c:18
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:137
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:137 (discriminator 1)
current_wq_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue_internal.h:63
current_is_async
/usr/local/google/home/dvyukov/src/linux/kernel/async.c:329
current_wq_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue_internal.h:63
current_is_async
/usr/local/google/home/dvyukov/src/linux/kernel/async.c:329
current_is_async
/usr/local/google/home/dvyukov/src/linux/kernel/async.c:328
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:139 (discriminator 9)
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:142
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2227
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2238
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2240
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2243
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2245
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2003
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2017
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2029
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2028
format_decode
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2002
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2252
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2253
memcpy
/usr/local/google/home/dvyukov/src/linux/./include/linux/string.h:346
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2255
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2257
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2243
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2364
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2365
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2366
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2372
vsnprintf
/usr/local/google/home/dvyukov/src/linux/lib/vsprintf.c:2224
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:148
security_kernel_module_request
/usr/local/google/home/dvyukov/src/linux/security/security.c:1040
security_kernel_module_request
/usr/local/google/home/dvyukov/src/linux/security/security.c:1043
integrity_kernel_module_request
/usr/local/google/home/dvyukov/src/linux/security/integrity/digsig_asymmetric.c:136
integrity_kernel_module_request
/usr/local/google/home/dvyukov/src/linux/security/integrity/digsig_asymmetric.c:137
security_kernel_module_request
/usr/local/google/home/dvyukov/src/linux/security/security.c:1044
__read_once_size
/usr/local/google/home/dvyukov/src/linux/./include/linux/compiler.h:188
arch_atomic_read
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/atomic.h:31
atomic_read
/usr/local/google/home/dvyukov/src/linux/./include/asm-generic/atomic-instrumented.h:22
atomic_dec_if_positive
/usr/local/google/home/dvyukov/src/linux/./include/linux/atomic.h:711
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:152
atomic_try_cmpxchg
/usr/local/google/home/dvyukov/src/linux/./include/asm-generic/atomic-instrumented.h:71
atomic_dec_if_positive
/usr/local/google/home/dvyukov/src/linux/./include/linux/atomic.h:717
__request_module
/usr/local/google/home/dvyukov/src/linux/kernel/kmod.c:152
atomic_dec_if_positive
/usr/local/google/home/dvyukov/src/linux/./include/linux/atomic.h:719
__request_module
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trace_workqueue_activate_work
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__queue_work
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__queue_work
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__queue_work
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__queue_work
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insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1296
work_static
/usr/local/google/home/dvyukov/src/linux/./include/linux/workqueue.h:212
set_work_data
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:617
set_work_pwq
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:623
insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1299
__list_add
/usr/local/google/home/dvyukov/src/linux/./include/linux/list.h:63
list_add_tail
/usr/local/google/home/dvyukov/src/linux/./include/linux/list.h:93
insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1300
insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1301
get_pwq
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1063
get_pwq
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1063
get_pwq
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1064
get_pwq
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1065
insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1311
__read_once_size
/usr/local/google/home/dvyukov/src/linux/./include/linux/compiler.h:188
list_empty
/usr/local/google/home/dvyukov/src/linux/./include/linux/list.h:203
first_idle_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:818
wake_up_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:835
first_idle_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:821
wake_up_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:835
wake_up_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:838
trace_hardirqs_off
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trace_hardirqs_off
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__preempt_count_add
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/preempt.h:76
prandom_u32
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:81
prandom_u32_state
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:63
wq_worker_waking_up
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:854
to_kthread
/usr/local/google/home/dvyukov/src/linux/kernel/kthread.c:72
kthread_data
/usr/local/google/home/dvyukov/src/linux/kernel/kthread.c:156
to_kthread
/usr/local/google/home/dvyukov/src/linux/kernel/kthread.c:73
kthread_data
/usr/local/google/home/dvyukov/src/linux/kernel/kthread.c:156
wq_worker_waking_up
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:860
trace_hardirqs_off
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trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
wake_up_worker
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:834
insert_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1295
__queue_work
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1365
arch_irqs_disabled_flags
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/irqflags.h:164
queue_work_on
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1490
queue_work_on
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1490 (discriminator 2)
trace_hardirqs_on
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trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:24
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_enable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:40
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
trace_hardirqs_on
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trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:30
arch_local_irq_restore
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/paravirt.h:788
queue_work_on
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1490
queue_work_on
/usr/local/google/home/dvyukov/src/linux/kernel/workqueue.c:1492
call_usermodehelper_exec
/usr/local/google/home/dvyukov/src/linux/kernel/umh.c:562
trace_hardirqs_off
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trace_hardirqs_off
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trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
__preempt_count_add
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/preempt.h:76
prandom_u32
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:81
prandom_u32_state
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:63
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:39
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:23
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:24
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_enable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:40
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:25
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:27
trace_hardirqs_on
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:30
schedule_timeout
/usr/local/google/home/dvyukov/src/linux/kernel/time/timer.c:1770
schedule_timeout
/usr/local/google/home/dvyukov/src/linux/kernel/time/timer.c:1780
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:39
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
/usr/local/google/home/dvyukov/src/linux/./include/trace/events/preemptirq.h:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
__preempt_count_add
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/preempt.h:76
prandom_u32
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:81
prandom_u32_state
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:63
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
__preempt_count_add
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/preempt.h:76
prandom_u32
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:81
prandom_u32_state
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:63
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:591
_msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/./include/linux/jiffies.h:310
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:593
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:594
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
__ffs
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/bitops.h:365
_find_next_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:63
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:93
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:53
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
__ffs
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/bitops.h:365
_find_next_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:63
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:93
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:53
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
__ffs
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/bitops.h:365
_find_next_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:63
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:93
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
__preempt_count_add
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/preempt.h:76
prandom_u32
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:81
prandom_u32_state
/usr/local/google/home/dvyukov/src/linux/lib/random32.c:63
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:43
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:53
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
__ffs
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/bitops.h:365
_find_next_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:63
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:93
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:53
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
__ffs
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/bitops.h:365
_find_next_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:63
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:93
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
cpumask_next_and
/usr/local/google/home/dvyukov/src/linux/lib/cpumask.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:40
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:43
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:45
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:49
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:53
find_next_and_bit
/usr/local/google/home/dvyukov/src/linux/lib/find_bit.c:94
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:591
_msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/./include/linux/jiffies.h:310
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:593
__msecs_to_jiffies
/usr/local/google/home/dvyukov/src/linux/kernel/time/time.c:594
schedule_timeout
/usr/local/google/home/dvyukov/src/linux/kernel/time/timer.c:1766
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:36
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:39
trace_hardirqs_off
/usr/local/google/home/dvyukov/src/linux/kernel/trace/trace_preemptirq.c:40
arch_static_branch
/usr/local/google/home/dvyukov/src/linux/./arch/x86/include/asm/jump_label.h:44
static_key_false
/usr/local/google/home/dvyukov/src/linux/./include/linux/jump_label.h:142
trace_irq_disable_rcuidle
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trace_hardirqs_off
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bpf_jit_kallsyms_enabled
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bpf_prog_kallsyms_find
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rcu_read_unlock
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is_bpf_text_address
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static_key_false
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trace_irq_enable_rcuidle
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trace_hardirqs_on
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trace_hardirqs_on
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trace_hardirqs_on
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static_key_false
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trace_irq_enable_rcuidle
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trace_hardirqs_on
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atomic_dec_and_test
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helper_unlock
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call_usermodehelper_exec
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helper_unlock
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call_usermodehelper_exec
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static_key_false
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trace_irq_disable_rcuidle
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trace_hardirqs_on
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arch_static_branch
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static_key_false
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trace_irq_enable_rcuidle
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trace_hardirqs_on
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trace_hardirqs_on
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Attachment: .config
Description: Binary data