On 12/13/2016 12:51 AM, Cong Wang wrote:
On Mon, Dec 12, 2016 at 1:18 PM, Or Gerlitz <gerlitz...@gmail.com> wrote:
On Mon, Dec 12, 2016 at 3:28 PM, Daniel Borkmann <dan...@iogearbox.net> wrote:
Note that there's still the RCU fix missing for the deletion race that
Cong will still send out, but you say that the only thing you do is to
add a single rule, but no other operation in involved during that test?
What's missing to have the deletion race fixed? making a patch or
testing to a patch which was sent?
If you think it would help for this problem, here is my patch rebased
on the latest net-next.
Again, I don't see how it could help this case yet, especially I don't
see how we could have a loop in this singly linked list.
I've applied cong's patch and hit a different lockup(full log attached):
[ 264.725414] RIP: 0010:fl_classify+0x1f1/0x2b0 [cls_flower]
(gdb) list *(fl_classify+0x1f1)
0x1591 is in fl_classify (net/sched/cls_flower.c:187).
182 if (f && !tc_skip_sw(f->flags)) {
183 *res = f->res;
184 return tcf_exts_exec(skb, &f->exts, res);
185 }
186 return -1;
187 }
188
189 static int fl_init(struct tcf_proto *tp)
190 {
191 struct cls_fl_head *head;
(gdb)
Daniel suggested I'll add a print:
case RTM_DELTFILTER:
- err = tp->ops->delete(tp, fh);
+ printk(KERN_ERR "DEBUGG:SK %s:%d\n", __func__, __LINE__);
+ err = tp->ops->delete(tp, fh, &last);
if (err == 0) {
and I couldn't see this print in the output.....
[ 238.507670] GACT probability on
[ 264.573942] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
[modprobe:4867]
[ 264.582875] Modules linked in: act_gact act_mirred openvswitch
nf_conntrack_ipv6 nf_nat_ipv6 nf_defrag_ipv6 vfio_pci vfio_virqfd
vfio_iommu_type1 vfio cls_flower mlx5_ib mlx5_core devlink sch_ingress nfsv3
nfs fscache xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
iptable_nat nf_nat_ipv4 nf_nat libcrc32c nf_conntrack_ipv4 nf_defrag_ipv4
xt_conntrack nf_conntrack tun ebtable_filter ebtables ip6table_filter
ip6_tables netconsole bridge stp llc rpcrdma ib_isert iscsi_target_mod ib_iser
libiscsi scsi_transport_iscsi ib_srpt ib_srp scsi_transport_srp ib_ipoib
rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm intel_rapl sb_edac
edac_core x86_pkg_temp_thermal coretemp kvm_intel kvm ib_core irqbypass
crct10dif_pclmul crc32_pclmul igb ptp iTCO_wdt pps_core crc32c_intel joydev
i2c_algo_bit ghash_clmulni_intel iTCO_vendor_support pcspkr i2c_i801 mei_me
ipmi_ssif ioatdma shpchp tpm_tis i2c_smbus tpm_tis_core dca tpm mei lpc_ich
ipmi_si ipmi_msghandler wmi nfsd target_core_mod auth_rpcgss nfs_acl lockd
grace sunrpc isci libsas serio_raw scsi_transport_sas [last unloaded: devlink]
[ 264.703539] CPU: 0 PID: 4867 Comm: modprobe Not tainted 4.9.0+ #27
[ 264.710766] Hardware name: Supermicro X9DRW/X9DRW, BIOS 3.0a 08/08/2013
[ 264.718475] task: ffff89916ad09d80 task.stack: ffffa36f44510000
[ 264.725414] RIP: 0010:fl_classify+0x1f1/0x2b0 [cls_flower]
[ 264.731863] RSP: 0018:ffff89916fa03ad8 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff10
[ 264.740971] RAX: 00000000ffffffff RBX: ffff89913f522100 RCX: 0000000000000000
[ 264.749265] RDX: ffff89916fa03c98 RSI: ffff89915bd743c0 RDI: ffff89913f522100
[ 264.757558] RBP: ffff89916fa03c28 R08: 000000000000270f R09: 0000000000000000
[ 264.765852] R10: 0000000000000000 R11: 0000000000000004 R12: ffff89916fa03c98
[ 264.774144] R13: ffff89913ecc7c00 R14: ffff89915bd743c0 R15: 0000000000000001
[ 264.782440] FS: 00007f74f2f5e700(0000) GS:ffff89916fa00000(0000)
knlGS:0000000000000000
[ 264.792066] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 264.798809] CR2: 00007f74f2491480 CR3: 000000043f3f8000 CR4: 00000000000426f0
[ 264.807102] Call Trace:
[ 264.810151] <IRQ>
[ 264.812717] ? handle_edge_irq+0x87/0x130
[ 264.817504] ? handle_irq+0xab/0x130
[ 264.821808] ? irq_exit+0x77/0xe0
[ 264.825828] ? irq_exit+0x77/0xe0
[ 264.829849] ? do_IRQ+0x51/0xd0
[ 264.833664] ? common_interrupt+0x93/0x93
[ 264.838462] tc_classify+0x78/0x120
[ 264.842679] __netif_receive_skb_core+0x623/0xa00
[ 264.848264] ? udp4_gro_receive+0x10b/0x2d0
[ 264.853253] __netif_receive_skb+0x18/0x60
[ 264.858150] netif_receive_skb_internal+0x40/0xb0
[ 264.863723] napi_gro_receive+0xcd/0x120
[ 264.868437] mlx5e_handle_rx_cqe_rep+0x61b/0x890 [mlx5_core]
[ 264.875105] ? kvm_irq_delivery_to_apic+0x2c0/0x2c0 [kvm]
[ 264.881462] mlx5e_poll_rx_cq+0x83/0x840 [mlx5_core]
[ 264.887333] mlx5e_napi_poll+0x89/0x480 [mlx5_core]
[ 264.893102] net_rx_action+0x260/0x3c0
[ 264.897610] __do_softirq+0xc9/0x28c
[ 264.901922] irq_exit+0xd7/0xe0
[ 264.905748] do_IRQ+0x51/0xd0
[ 264.909380] common_interrupt+0x93/0x93
[ 264.913984] RIP: 0010:mpihelp_submul_1+0x91/0xe0
[ 264.919460] RSP: 0018:ffffa36f44513940 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffffa2
[ 264.928565] RAX: 5414d8fd4127cc59 RBX: 0000000100000000 RCX: ffffffffffffff50
[ 264.936860] RDX: 00000000ffffffea RSI: 0000000019ba7e4d RDI: 0000000068ef6b86
[ 264.945146] RBP: ffffa36f44513960 R08: 352cbbd4573982a8 R09: 64589019128fea22
[ 264.953440] R10: 128fea2200000000 R11: 352cbbd5573982a8 R12: ffff89955c585c00
[ 264.961732] R13: ffff899134dbfbd0 R14: 66a4c31fb80cf128 R15: d7554d389539f6c8
[ 264.970028] </IRQ>
[ 264.972688] mpihelp_divrem+0x23b/0x740
[ 264.977291] mpi_powm+0x471/0xa10
[ 264.981312] rsa_verify+0xa5/0x130
[ 264.985421] pkcs1pad_verify+0xb9/0xf0
[ 264.989925] public_key_verify_signature+0x1f7/0x280
[ 264.995790] public_key_verify_signature_2+0x15/0x20
[ 265.001656] verify_signature+0x3c/0x50
[ 265.006259] pkcs7_validate_trust+0xa1/0x200
[ 265.011352] verify_pkcs7_signature+0x9a/0x140
[ 265.016636] mod_verify_sig+0x92/0xe0
[ 265.021046] load_module+0x171/0x2810
[ 265.025456] ? vfs_read+0x113/0x130
[ 265.029668] ? kernel_read_file+0x158/0x190
[ 265.034659] ? kernel_read_file_from_fd+0x49/0x80
[ 265.040248] SYSC_finit_module+0xa6/0xf0
[ 265.044947] SyS_finit_module+0xe/0x10
[ 265.049452] entry_SYSCALL_64_fastpath+0x1a/0xa9
[ 265.054931] RIP: 0033:0x7f74f2439239
[ 265.059241] RSP: 002b:00007ffeb8b23218 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 265.068373] RAX: ffffffffffffffda RBX: 00007ffeb8b21f10 RCX: 00007f74f2439239
[ 265.076665] RDX: 0000000000000000 RSI: 00005578b61d02a6 RDI: 0000000000000000
[ 265.084958] RBP: 00007ffeb8b21f00 R08: 0000000000000000 R09: 0000000000000000
[ 265.098996] R10: 0000000000000000 R11: 0000000000000246 R12: 00005578b61d1be7
[ 265.107289] R13: 00007ffeb8b22088 R14: 0000000000000000 R15: 00005578b61d1bf3
[ 265.115582] Code: 02 75 e2 48 8b 81 98 00 00 00 48 8b 91 a0 00 00 00 48 8b
7c 24 18 48 89 07 48 89 57 08 8b 81 84 00 00 00 85 c0 0f 85 86 00 00 00 <48> 8b
9c 24 20 01 00 00 65 48 33 1c 25 28 00 00 00 0f 85 a1 00
[ 265.143394] Kernel panic - not syncing: softlockup: hung tasks
[ 265.150231] CPU: 0 PID: 4867 Comm: modprobe Tainted: G L 4.9.0+
#27
[ 265.159057] Hardware name: Supermicro X9DRW/X9DRW, BIOS 3.0a 08/08/2013
[ 265.166766] Call Trace:
[ 265.169811] <IRQ>
[ 265.172374] dump_stack+0x63/0x8c
[ 265.176393] panic+0xeb/0x239
[ 265.180047] watchdog_timer_fn+0x1e5/0x1f0
[ 265.184941] ? watchdog+0x40/0x40
[ 265.188960] __hrtimer_run_queues+0xee/0x270
[ 265.194050] hrtimer_interrupt+0xa8/0x190
[ 265.198849] local_apic_timer_interrupt+0x35/0x60
[ 265.204422] smp_apic_timer_interrupt+0x38/0x50
[ 265.209802] apic_timer_interrupt+0x93/0xa0
[ 265.214794] RIP: 0010:fl_classify+0x1f1/0x2b0 [cls_flower]
[ 265.221242] RSP: 0018:ffff89916fa03ad8 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff10
[ 265.230339] RAX: 00000000ffffffff RBX: ffff89913f522100 RCX: 0000000000000000
[ 265.238635] RDX: ffff89916fa03c98 RSI: ffff89915bd743c0 RDI: ffff89913f522100
[ 265.246929] RBP: ffff89916fa03c28 R08: 000000000000270f R09: 0000000000000000
[ 265.255223] R10: 0000000000000000 R11: 0000000000000004 R12: ffff89916fa03c98
[ 265.263516] R13: ffff89913ecc7c00 R14: ffff89915bd743c0 R15: 0000000000000001
[ 265.271812] ? handle_edge_irq+0x87/0x130
[ 265.276599] ? handle_irq+0xab/0x130
[ 265.280902] ? irq_exit+0x77/0xe0
[ 265.284911] ? irq_exit+0x77/0xe0
[ 265.288927] ? do_IRQ+0x51/0xd0
[ 265.292752] ? common_interrupt+0x93/0x93
[ 265.297549] tc_classify+0x78/0x120
[ 265.301762] __netif_receive_skb_core+0x623/0xa00
[ 265.307336] ? udp4_gro_receive+0x10b/0x2d0
[ 265.312328] __netif_receive_skb+0x18/0x60
[ 265.317221] netif_receive_skb_internal+0x40/0xb0
[ 265.322795] napi_gro_receive+0xcd/0x120
[ 265.327502] mlx5e_handle_rx_cqe_rep+0x61b/0x890 [mlx5_core]
[ 265.334153] ? kvm_irq_delivery_to_apic+0x2c0/0x2c0 [kvm]
[ 265.340510] mlx5e_poll_rx_cq+0x83/0x840 [mlx5_core]
[ 265.346379] mlx5e_napi_poll+0x89/0x480 [mlx5_core]
[ 265.352170] net_rx_action+0x260/0x3c0
[ 265.356675] __do_softirq+0xc9/0x28c
[ 265.360987] irq_exit+0xd7/0xe0
[ 265.364814] do_IRQ+0x51/0xd0
[ 265.368440] common_interrupt+0x93/0x93
[ 265.373041] RIP: 0010:mpihelp_submul_1+0x91/0xe0
[ 265.378516] RSP: 0018:ffffa36f44513940 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffffa2
[ 265.387614] RAX: 5414d8fd4127cc59 RBX: 0000000100000000 RCX: ffffffffffffff50
[ 265.395921] RDX: 00000000ffffffea RSI: 0000000019ba7e4d RDI: 0000000068ef6b86
[ 265.404235] RBP: ffffa36f44513960 R08: 352cbbd4573982a8 R09: 64589019128fea22
[ 265.412526] R10: 128fea2200000000 R11: 352cbbd5573982a8 R12: ffff89955c585c00
[ 265.420819] R13: ffff899134dbfbd0 R14: 66a4c31fb80cf128 R15: d7554d389539f6c8
[ 265.429113] </IRQ>
[ 265.431769] mpihelp_divrem+0x23b/0x740
[ 265.436373] mpi_powm+0x471/0xa10
[ 265.440394] rsa_verify+0xa5/0x130
[ 265.444508] pkcs1pad_verify+0xb9/0xf0
[ 265.449014] public_key_verify_signature+0x1f7/0x280
[ 265.454878] public_key_verify_signature_2+0x15/0x20
[ 265.460741] verify_signature+0x3c/0x50
[ 265.465343] pkcs7_validate_trust+0xa1/0x200
[ 265.470430] verify_pkcs7_signature+0x9a/0x140
[ 265.475715] mod_verify_sig+0x92/0xe0
[ 265.480147] load_module+0x171/0x2810
[ 265.484555] ? vfs_read+0x113/0x130
[ 265.488758] ? kernel_read_file+0x158/0x190
[ 265.493751] ? kernel_read_file_from_fd+0x49/0x80
[ 265.499328] SYSC_finit_module+0xa6/0xf0
[ 265.504051] SyS_finit_module+0xe/0x10
[ 265.508555] entry_SYSCALL_64_fastpath+0x1a/0xa9
[ 265.514030] RIP: 0033:0x7f74f2439239
[ 265.518340] RSP: 002b:00007ffeb8b23218 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 265.527446] RAX: ffffffffffffffda RBX: 00007ffeb8b21f10 RCX: 00007f74f2439239
[ 265.535740] RDX: 0000000000000000 RSI: 00005578b61d02a6 RDI: 0000000000000000
[ 265.544056] RBP: 00007ffeb8b21f00 R08: 0000000000000000 R09: 0000000000000000
[ 265.552354] R10: 0000000000000000 R11: 0000000000000246 R12: 00005578b61d1be7
[ 265.560648] R13: 00007ffeb8b22088 R14: 0000000000000000 R15: 00005578b61d1bf3
[ 265.568994] Kernel Offset: 0x3b000000 from 0xffffffff81000000 (relocation
range: 0xffffffff80000000-0xffffffffbfffffff)
[ 266.845267] ---[ end Kernel panic - not syncing: softlockup: hung tasks
[ 266.853000] ------------[ cut here ]------------
[ 266.858490] WARNING: CPU: 0 PID: 4867 at arch/x86/kernel/smp.c:127
native_smp_send_reschedule+0x3f/0x50
[ 266.869551] Modules linked in: act_gact act_mirred openvswitch
nf_conntrack_ipv6 nf_nat_ipv6 nf_defrag_ipv6 vfio_pci vfio_virqfd
vfio_iommu_type1 vfio cls_flower mlx5_ib mlx5_core devlink sch_ingress nfsv3
nfs fscache xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
iptable_nat nf_nat_ipv4 nf_nat libcrc32c nf_conntrack_ipv4 nf_defrag_ipv4
xt_conntrack nf_conntrack tun ebtable_filter ebtables ip6table_filter
ip6_tables netconsole bridge stp llc rpcrdma ib_isert iscsi_target_mod ib_iser
libiscsi scsi_transport_iscsi ib_srpt ib_srp scsi_transport_srp ib_ipoib
rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm intel_rapl sb_edac
edac_core x86_pkg_temp_thermal coretemp kvm_intel kvm ib_core irqbypass
crct10dif_pclmul crc32_pclmul igb ptp iTCO_wdt pps_core crc32c_intel joydev
i2c_algo_bit ghash_clmulni_intel iTCO_vendor_support pcspkr i2c_i801 mei_me
ipmi_ssif ioatdma shpchp tpm_tis i2c_smbus tpm_tis_core dca tpm mei lpc_ich
ipmi_si ipmi_msghandler wmi nfsd target_core_mod auth_rpcgss nfs_acl lockd
grace sunrpc isci libsas serio_raw scsi_transport_sas [last unloaded: devlink]
[ 266.990566] CPU: 0 PID: 4867 Comm: modprobe Tainted: G L 4.9.0+
#27
[ 266.999401] Hardware name: Supermicro X9DRW/X9DRW, BIOS 3.0a 08/08/2013
[ 267.007118] Call Trace:
[ 267.010179] <IRQ>
[ 267.012748] dump_stack+0x63/0x8c
[ 267.016783] __warn+0xd1/0xf0
[ 267.020420] warn_slowpath_null+0x1d/0x20
[ 267.025314] native_smp_send_reschedule+0x3f/0x50
[ 267.030895] try_to_wake_up+0x312/0x390
[ 267.035501] wake_up_process+0x15/0x20
[ 267.040009] swake_up_locked+0x24/0x50
[ 267.044519] swake_up+0x2c/0x40
[ 267.048364] kvm_vcpu_kick+0x32/0x80 [kvm]
[ 267.053276] __apic_accept_irq+0x1b6/0x330 [kvm]
[ 267.058774] kvm_apic_set_irq+0x2a/0x30 [kvm]
[ 267.063978] kvm_irq_delivery_to_apic_fast+0xf5/0x3c0 [kvm]
[ 267.070544] kvm_arch_set_irq_inatomic+0x99/0xb0 [kvm]
[ 267.076621] irqfd_wakeup+0x111/0x160 [kvm]
[ 267.081628] ? kvm_irq_delivery_to_apic+0x2c0/0x2c0 [kvm]
[ 267.087984] __wake_up_common+0x55/0x90
[ 267.092583] __wake_up_locked_key+0x18/0x20
[ 267.097580] eventfd_signal+0x5c/0x80
[ 267.102001] vfio_msihandler+0x16/0x20 [vfio_pci]
[ 267.107578] __handle_irq_event_percpu+0x3c/0x1a0
[ 267.113164] handle_irq_event_percpu+0x32/0x80
[ 267.118453] handle_irq_event+0x2c/0x50
[ 267.123068] handle_edge_irq+0x87/0x130
[ 267.127677] handle_irq+0xab/0x130
[ 267.131801] do_IRQ+0x48/0xd0
[ 267.135435] common_interrupt+0x93/0x93
[ 267.140042] RIP: 0010:panic+0x1f5/0x239
[ 267.144647] RSP: 0018:ffff89916fa03898 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff73
[ 267.153760] RAX: 000000000000003b RBX: 0000000000000000 RCX: 0000000000000006
[ 267.162062] RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffff89916fa0e060
[ 267.170362] RBP: ffff89916fa03908 R08: 0000000000000691 R09: ffff898d000bc4c0
[ 267.178659] R10: 000000000000010a R11: 0000000000000198 R12: ffffffffbcc4a459
[ 267.186964] R13: 0000000000000000 R14: 0000000000000000 R15: ffff89916fa03a28
[ 267.195266] ? panic+0x1f1/0x239
[ 267.199201] watchdog_timer_fn+0x1e5/0x1f0
[ 267.204104] ? watchdog+0x40/0x40
[ 267.208130] __hrtimer_run_queues+0xee/0x270
[ 267.213224] hrtimer_interrupt+0xa8/0x190
[ 267.218036] local_apic_timer_interrupt+0x35/0x60
[ 267.223612] smp_apic_timer_interrupt+0x38/0x50
[ 267.228999] apic_timer_interrupt+0x93/0xa0
[ 267.233987] RIP: 0010:fl_classify+0x1f1/0x2b0 [cls_flower]
[ 267.240440] RSP: 0018:ffff89916fa03ad8 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff10
[ 267.249539] RAX: 00000000ffffffff RBX: ffff89913f522100 RCX: 0000000000000000
[ 267.257829] RDX: ffff89916fa03c98 RSI: ffff89915bd743c0 RDI: ffff89913f522100
[ 267.266128] RBP: ffff89916fa03c28 R08: 000000000000270f R09: 0000000000000000
[ 267.274425] R10: 0000000000000000 R11: 0000000000000004 R12: ffff89916fa03c98
[ 267.282721] R13: ffff89913ecc7c00 R14: ffff89915bd743c0 R15: 0000000000000001
[ 267.291019] ? handle_edge_irq+0x87/0x130
[ 267.295818] ? handle_irq+0xab/0x130
[ 267.300133] ? irq_exit+0x77/0xe0
[ 267.304160] ? irq_exit+0x77/0xe0
[ 267.308184] ? do_IRQ+0x51/0xd0
[ 267.312015] ? common_interrupt+0x93/0x93
[ 267.316818] tc_classify+0x78/0x120
[ 267.321038] __netif_receive_skb_core+0x623/0xa00
[ 267.326618] ? udp4_gro_receive+0x10b/0x2d0
[ 267.331616] __netif_receive_skb+0x18/0x60
[ 267.336514] netif_receive_skb_internal+0x40/0xb0
[ 267.342091] napi_gro_receive+0xcd/0x120
[ 267.346809] mlx5e_handle_rx_cqe_rep+0x61b/0x890 [mlx5_core]
[ 267.353467] ? kvm_irq_delivery_to_apic+0x2c0/0x2c0 [kvm]
[ 267.359837] mlx5e_poll_rx_cq+0x83/0x840 [mlx5_core]
[ 267.365716] mlx5e_napi_poll+0x89/0x480 [mlx5_core]
[ 267.371500] net_rx_action+0x260/0x3c0
[ 267.376008] __do_softirq+0xc9/0x28c
[ 267.380330] irq_exit+0xd7/0xe0
[ 267.384168] do_IRQ+0x51/0xd0
[ 267.387810] common_interrupt+0x93/0x93
[ 267.392426] RIP: 0010:mpihelp_submul_1+0x91/0xe0
[ 267.403605] RSP: 0018:ffffa36f44513940 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffffa2
[ 267.412818] RAX: 5414d8fd4127cc59 RBX: 0000000100000000 RCX: ffffffffffffff50
[ 267.421114] RDX: 00000000ffffffea RSI: 0000000019ba7e4d RDI: 0000000068ef6b86
[ 267.429418] RBP: ffffa36f44513960 R08: 352cbbd4573982a8 R09: 64589019128fea22
[ 267.437713] R10: 128fea2200000000 R11: 352cbbd5573982a8 R12: ffff89955c585c00
[ 267.446014] R13: ffff899134dbfbd0 R14: 66a4c31fb80cf128 R15: d7554d389539f6c8
[ 267.454311] </IRQ>
[ 267.456981] mpihelp_divrem+0x23b/0x740
[ 267.461598] mpi_powm+0x471/0xa10
[ 267.465630] rsa_verify+0xa5/0x130
[ 267.469759] pkcs1pad_verify+0xb9/0xf0
[ 267.474277] public_key_verify_signature+0x1f7/0x280
[ 267.480148] public_key_verify_signature_2+0x15/0x20
[ 267.486011] verify_signature+0x3c/0x50
[ 267.490619] pkcs7_validate_trust+0xa1/0x200
[ 267.495710] verify_pkcs7_signature+0x9a/0x140
[ 267.501000] mod_verify_sig+0x92/0xe0
[ 267.505404] load_module+0x171/0x2810
[ 267.509822] ? vfs_read+0x113/0x130
[ 267.514047] ? kernel_read_file+0x158/0x190
[ 267.519041] ? kernel_read_file_from_fd+0x49/0x80
[ 267.524620] SYSC_finit_module+0xa6/0xf0
[ 267.529325] SyS_finit_module+0xe/0x10
[ 267.533844] entry_SYSCALL_64_fastpath+0x1a/0xa9
[ 267.539325] RIP: 0033:0x7f74f2439239
[ 267.543639] RSP: 002b:00007ffeb8b23218 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 267.552740] RAX: ffffffffffffffda RBX: 00007ffeb8b21f10 RCX: 00007f74f2439239
[ 267.561042] RDX: 0000000000000000 RSI: 00005578b61d02a6 RDI: 0000000000000000
[ 267.569341] RBP: 00007ffeb8b21f00 R08: 0000000000000000 R09: 0000000000000000
[ 267.577638] R10: 0000000000000000 R11: 0000000000000246 R12: 00005578b61d1be7
[ 267.585935] R13: 00007ffeb8b22088 R14: 0000000000000000 R15: 00005578b61d1bf3
[ 267.594231] ---[ end trace 2eb46a584b6ba420 ]---
