Bug 1887805
| Summary: | RT kernel nodes report BUG: using smp_processor_id() in preemptible [00000000] code: handler18/6040 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Marius Cornea <mcornea> |
| Component: | kernel-rt | Assignee: | Networking Services Kernel Team bug triage <nst-kernel-bugs> |
| kernel-rt sub component: | Networking | QA Contact: | Jianwen Ji <jiji> |
| Status: | CLOSED DUPLICATE | Docs Contact: | |
| Severity: | urgent | ||
| Priority: | urgent | CC: | atragler, bbreard, bhu, imcleod, jligon, kzhang, mleitner, nstielau, william.caban |
| Version: | 8.2 | ||
| Target Milestone: | rc | ||
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-10-13 21:15:56 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Found an upstream patch which seems related - https://lkml.org/lkml/2020/10/9/515 Looks like a dupe of https://bugzilla.redhat.com/show_bug.cgi?id=1886109 Assigning to kernel-rt team for confirmation (In reply to Micah Abbott from comment #2) > Looks like a dupe of https://bugzilla.redhat.com/show_bug.cgi?id=1886109 > > Assigning to kernel-rt team for confirmation Not kernel-rt here, but right you are :-) Thanks. *** This bug has been marked as a duplicate of bug 1886109 *** |
Description of problem: RT kernel nodes report: [ 1309.725742] BUG: using smp_processor_id() in preemptible [00000000] code: handler20/6042 [ 1309.725747] caller is flow_lookup.isra.15+0x2c/0xf0 [openvswitch] [ 1309.725749] CPU: 3 PID: 6042 Comm: handler20 Not tainted 4.18.0-193.24.1.rt13.74.el8_2.dt1.x86_64 #1 [ 1309.725750] Hardware name: Red Hat KVM, BIOS 0.0.0 02/06/2015 [ 1309.725751] Call Trace: [ 1309.725755] dump_stack+0x5c/0x80 [ 1309.725757] check_preemption_disabled+0xc4/0xd0 [ 1309.725762] flow_lookup.isra.15+0x2c/0xf0 [openvswitch] [ 1309.725767] ovs_flow_tbl_lookup+0x3b/0x60 [openvswitch] [ 1309.725772] ovs_flow_cmd_new+0x2d8/0x430 [openvswitch] [ 1309.725777] ? do_execute_actions+0xc4/0xa20 [openvswitch] [ 1309.725786] genl_family_rcv_msg+0x1d7/0x410 [ 1309.725790] ? migrate_enable+0x123/0x3a0 [ 1309.725794] genl_rcv_msg+0x47/0x8c [ 1309.725797] ? __kmalloc_node_track_caller+0xff/0x2e0 [ 1309.725799] ? genl_family_rcv_msg+0x410/0x410 [ 1309.725850] netlink_rcv_skb+0x4c/0x120 [ 1309.725853] genl_rcv+0x24/0x40 [ 1309.725855] netlink_unicast+0x197/0x230 [ 1309.725858] netlink_sendmsg+0x204/0x3d0 [ 1309.725862] sock_sendmsg+0x4c/0x50 [ 1309.725864] ___sys_sendmsg+0x29f/0x300 [ 1309.725867] ? migrate_enable+0x123/0x3a0 [ 1309.725870] ? ep_send_events_proc+0x8a/0x1f0 [ 1309.725872] ? ep_scan_ready_list.constprop.23+0x237/0x260 [ 1309.725874] ? rt_spin_unlock+0x23/0x40 [ 1309.725877] ? ep_poll+0x1b3/0x390 [ 1309.725880] ? __fget+0x72/0xa0 [ 1309.725882] __sys_sendmsg+0x57/0xa0 [ 1309.725886] do_syscall_64+0x87/0x1a0 [ 1309.725889] entry_SYSCALL_64_after_hwframe+0x65/0xca [ 1309.725891] RIP: 0033:0x7f58bd32bb07 [ 1309.725894] Code: c3 66 90 41 54 41 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 eb ec ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 24 ed ff ff 48 [ 1309.725895] RSP: 002b:00007f58b3f9ca80 EFLAGS: 00003293 ORIG_RAX: 000000000000002e [ 1309.725898] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f58bd32bb07 [ 1309.725899] RDX: 0000000000000000 RSI: 00007f58b3f9cb10 RDI: 000000000000001c [ 1309.725900] RBP: 00007f58b3f9cb10 R08: 0000000000000000 R09: 00007f58a80153e0 [ 1309.725901] R10: 00007f58a80149b8 R11: 0000000000003293 R12: 0000000000000000 [ 1309.725902] R13: 00007f58b3f9ebd0 R14: 00007f58b3f9cfc0 R15: 00007f58b3f9cb10 Version-Release number of selected component (if applicable): 4.18.0-193.24.1.rt13.74.el8_2.dt1.x86_64 4.6.0-rc.3 How reproducible: 100% Steps to Reproduce: 1. Deploy via baremetal IPI flow by using 4.6.0-rc.3 with following MachineConfig: apiVersion: machineconfiguration.openshift.io/v1 kind: MachineConfig metadata: labels: machineconfiguration.openshift.io/role: worker name: realtime-worker spec: kernelType: realtime 2. After deployment copletes log in to one of the workers and check console or dmesg Actual results: Continuously reporting the bug below: [ 1446.262496] BUG: using smp_processor_id() in preemptible [00000000] code: handler19/6041 [ 1446.262507] caller is flow_lookup.isra.15+0x2c/0xf0 [openvswitch] [ 1446.262510] CPU: 2 PID: 6041 Comm: handler19 Not tainted 4.18.0-193.24.1.rt13.74.el8_2.dt1.x86_64 #1 [ 1446.262511] Hardware name: Red Hat KVM, BIOS 0.0.0 02/06/2015 [ 1446.262512] Call Trace: [ 1446.262523] dump_stack+0x5c/0x80 [ 1446.262528] check_preemption_disabled+0xc4/0xd0 [ 1446.262534] flow_lookup.isra.15+0x2c/0xf0 [openvswitch] [ 1446.262540] ovs_flow_tbl_lookup+0x3b/0x60 [openvswitch] [ 1446.262544] ovs_flow_cmd_new+0x2d8/0x430 [openvswitch] [ 1446.262548] ? __switch_to_asm+0x35/0x70 [ 1446.262550] ? __switch_to_asm+0x41/0x70 [ 1446.262551] ? __switch_to_asm+0x35/0x70 [ 1446.262563] genl_family_rcv_msg+0x1d7/0x410 [ 1446.262569] ? migrate_enable+0x123/0x3a0 [ 1446.262574] genl_rcv_msg+0x47/0x8c [ 1446.262579] ? __kmalloc_node_track_caller+0xff/0x2e0 [ 1446.262581] ? genl_family_rcv_msg+0x410/0x410 [ 1446.262584] netlink_rcv_skb+0x4c/0x120 [ 1446.262587] genl_rcv+0x24/0x40 [ 1446.262590] netlink_unicast+0x197/0x230 [ 1446.262593] netlink_sendmsg+0x204/0x3d0 [ 1446.262599] sock_sendmsg+0x4c/0x50 [ 1446.262602] ___sys_sendmsg+0x29f/0x300 [ 1446.262604] ? ___sys_recvmsg+0x15e/0x1e0 [ 1446.262610] ? ep_scan_ready_list.constprop.23+0x237/0x260 [ 1446.262612] ? rt_spin_unlock+0x23/0x40 [ 1446.262618] ? ep_poll+0x1b3/0x390 [ 1446.262623] ? __fget+0x72/0xa0 [ 1446.262626] __sys_sendmsg+0x57/0xa0 [ 1446.262631] do_syscall_64+0x87/0x1a0 [ 1446.262634] entry_SYSCALL_64_after_hwframe+0x65/0xca [ 1446.262637] RIP: 0033:0x7f58bd32bb07 [ 1446.262640] Code: c3 66 90 41 54 41 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 eb ec ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 24 ed ff ff 48 [ 1446.262641] RSP: 002b:00007f58b9f8aa80 EFLAGS: 00003293 ORIG_RAX: 000000000000002e [ 1446.262643] RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007f58bd32bb07 [ 1446.262645] RDX: 0000000000000000 RSI: 00007f58b9f8ab10 RDI: 0000000000000040 [ 1446.262646] RBP: 00007f58b9f8ab10 R08: 0000000000000000 R09: 00007f58b9f8c390 [ 1446.262647] R10: 00000000e2990db8 R11: 0000000000003293 R12: 0000000000000000 [ 1446.262648] R13: 00007f58b9f8c338 R14: 00007f58b9f8afb0 R15: 00007f58b9f8ab10 Expected results: No bugs are reported Additional info: