Bug 436678
| Summary: | ptrace: Testcase block-step crashes the machine | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan Kratochvil <jan.kratochvil> |
| Component: | kernel | Assignee: | Roland McGrath <roland> |
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | rawhide | CC: | kernel-mgr |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-03-11 18:29:09 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Jan Kratochvil
2008-03-09 06:16:33 UTC
Again, actually not utrace at all (it's not even in rawhide yet). It's ptrace-related x86 arch code. It is also my problem though. ;-) Sorry, I should know the current Rawhide has current no utrace patches applied. "Upstream" http://sourceware.org/systemtap/wiki/utrace/tests moved block-step into CRASHERS as it got now reproduced on the vanilla build: kernel-vanilla-2.6.25-0.101.rc4.git3.fc8.x86_64 http://koji.fedoraproject.org/koji/taskinfo?taskID=507618 general protection fault: 0000 [1] SMP DEBUG_PAGEALLOC CPU 0 Modules linked in: snd_hda_intel snd_usb_audio snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep snd soundcore nfs nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs ipv6 dm_mirror dm_mod uinput parport_pc parport floppy pcspkr 8139too 8139cp mii button sr_mod cdrom sg ata_piix ahci libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: freq_table] Pid: 1885, comm: block-step Not tainted 2.6.25-0.101.rc4.git3.fc8 #1 RIP: 0010:[<ffffffff8100ab79>] [<ffffffff8100ab79>] __switch_to+0x218/0x2bc RSP: 0018:ffff81000e42dca8 EFLAGS: 00000046 RAX: 0000000000000002 RBX: ffff81000e4cc470 RCX: 00000000000001d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff81000e42c000 RBP: ffff81000e42dcd8 R08: ffff810001069e00 R09: ffff81000106c390 R10: 0000000000000000 R11: 0000000000000001 R12: ffff81000e408470 R13: 0000000000000000 R14: ffff81000e408000 R15: ffff81000e4cc000 FS: 00007fa22e1d66f0(0000) GS:ffffffff81412000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000003b986ce650 CR3: 0000000011483000 CR4: 00000000000006a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process block-step (pid: 1885, threadinfo ffff81000e42c000, task ffff81000e4cc000) Stack: ffff81000e42dce8 ffff81000106c300 ffff81001613d400 ffff81001613ca00 0000000000000000 0000000000000001 ffff81000e4cc000 ffffffff812967d3 ffff81000e42dd78 0000000000000046 ffff81000e42dd18 ffffffff8104fe28 Call Trace: [<ffffffff812967d3>] thread_return+0x0/0xa9 [<ffffffff8104fe28>] ? lock_release_holdtime+0x45/0x4a [<ffffffff8103db2b>] ? ptrace_stop+0x161/0x166 [<ffffffff8103e8cb>] ? get_signal_to_deliver+0xc8/0x316 [<ffffffff8100b2e0>] ? do_notify_resume+0xac/0x868 [<ffffffff81134f5f>] ? __up_read+0x7a/0x83 [<ffffffff8104fe28>] ? lock_release_holdtime+0x45/0x4a [<ffffffff81012116>] ? native_sched_clock+0x50/0x6d [<ffffffff81012116>] ? native_sched_clock+0x50/0x6d [<ffffffff812987d0>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff81051d44>] ? trace_hardirqs_on+0xf1/0x115 [<ffffffff812987d0>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff81299762>] ? paranoid_userspace1+0x44/0x4c Code: 0f 30 48 89 f2 66 b9 00 06 89 f0 48 c1 ea 20 0f 30 31 d2 48 8b 83 b8 02 00 00 48 39 d0 74 0e 48 89 c2 b9 d9 01 00 00 48 c1 ea 20 <0f> 30 f6 47 12 20 74 2a 48 8b 43 50 0f 23 c0 48 8b 43 58 0f 23 RIP [<ffffffff8100ab79>] __switch_to+0x218/0x2bc RSP <ffff81000e42dca8> ---[ end trace ca143223eefdc828 ]--- BUG: sleeping function called from invalid context at kernel/rwsem.c:21 in_atomic():0, irqs_disabled():1 INFO: lockdep is turned off. irq event stamp: 324 hardirqs last enabled at (323): [<ffffffff8129932c>] _spin_unlock_irqrestore+0x3f/0x47 hardirqs last disabled at (324): [<ffffffff812961b5>] schedule+0xf6/0x714 softirqs last enabled at (168): [<ffffffff81038233>] __do_softirq+0xda/0xe3 softirqs last disabled at (165): [<ffffffff8100d19c>] call_softirq+0x1c/0x28 Pid: 1885, comm: block-step Tainted: G D 2.6.25-0.101.rc4.git3.fc8 #1 Call Trace: [<ffffffff8104fd60>] ? print_irqtrace_events+0x110/0x114 [<ffffffff8102ac30>] __might_sleep+0xda/0xdc [<ffffffff81297b27>] down_read+0x20/0x6d [<ffffffff81061594>] acct_collect+0x4c/0x19c [<ffffffff81036395>] do_exit+0x219/0x757 [<ffffffff812999fe>] oops_begin+0x0/0x96 [<ffffffff8100d9fa>] die+0x5d/0x66 [<ffffffff8129a0ad>] do_general_protection+0x128/0x131 [<ffffffff812994fd>] error_exit+0x0/0xa9 [<ffffffff8100ab79>] ? __switch_to+0x218/0x2bc [<ffffffff812967d3>] ? thread_return+0x0/0xa9 [<ffffffff8104fe28>] ? lock_release_holdtime+0x45/0x4a [<ffffffff8103db2b>] ? ptrace_stop+0x161/0x166 [<ffffffff8103e8cb>] ? get_signal_to_deliver+0xc8/0x316 [<ffffffff8100b2e0>] ? do_notify_resume+0xac/0x868 [<ffffffff81134f5f>] ? __up_read+0x7a/0x83 [<ffffffff8104fe28>] ? lock_release_holdtime+0x45/0x4a [<ffffffff81012116>] ? native_sched_clock+0x50/0x6d [<ffffffff81012116>] ? native_sched_clock+0x50/0x6d [<ffffffff812987d0>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff81051d44>] ? trace_hardirqs_on+0xf1/0x115 [<ffffffff812987d0>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff81299762>] ? paranoid_userspace1+0x44/0x4c I can't reproduce any crash on 2.6.25-0.101.rc4.git3.fc9 on x86_64. block-step.c rev 1.4 Was your test on real hardware or kvm? kvm... going to reproduce it on the RHTS real hardware. OK, closing as it is only a host kernel/kvm Bug 437028. Removing the `crasher' category upstream as KVM crashes should not hurt much. |