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[Bug kprobes/2071] Probes on ISR with probes on task thread's prehandler crash the system
- From: "hien at us dot ibm dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 21 Dec 2005 18:11:07 -0000
- Subject: [Bug kprobes/2071] Probes on ISR with probes on task thread's prehandler crash the system
- References: <20051220073112.2071.anil.s.keshavamurthy@intel.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From hien at us dot ibm dot com 2005-12-21 18:11 -------
Anil, I run your test on ppc64, the system gave an oops after building the
kernel with make -j8 for a while. Here's the trace
kernel BUG in do_exit at kernel/exit.c:880!
Oops: Exception in kernel mode, sig: 5 [#1]
SMP NR_CPUS=128 NUMA PSERIES LPAR
Modules linked in: mon_sched mon_sched_4 mon_sched_3 mon_sched_2 mon_sched_1
mon_irq mon_irq_4 mon_irq_3 mon_irq_2 mon_irq_1 mon_reent mon_dummy ipv6
parport_pc lp parport sg autofs4 binfmt_misc dm_multipath dm_mod pdc202xx_new
e1000 ipr firmware_class sd_mod scsi_mod
NIP: C000000000059694 LR: C00000000002C9F8 CTR: C00000000004CFCC
REGS: c000000038847a40 TRAP: 0700 Not tainted (2.6.15-rc5cel)
MSR: 8000000000029032 <EE,ME,IR,DR> CR: 24004422 XER: 00000010
TASK = c000000041c447e0[32713] 'as' THREAD: c000000038844000 CPU: 1
GPR00: 0000000000000000 C000000038847CC0 C0000000005BF790 0000000000000000
GPR04: 8000000000001032 C0000000417FDC80 00000000283B9E5D C000000001F34DA0
GPR08: 0000000000000000 0000000000000004 C000000038847D30 C0000000005BF790
GPR12: 0000000024004482 C00000000048D400 00000000100F39F8 0000000010030000
GPR16: 0000000010030000 0000000010020000 00000000FFFF9008 0000000010050000
GPR20: 0000000010050000 0000000000000002 C000000041C44908 C000000038847D30
GPR24: C000000041C44970 C000000041C44890 C000000041C44890 C0000000028C47E0
GPR28: 0000000000000010 C000000041C447E0 C0000000004FCBB0 C000000038847D30
NIP [C000000000059694] .do_exit+0xa9c/0xda4
LR [C00000000002C9F8] kretprobe_trampoline+0x0/0x8
Call Trace:
[C000000038847CC0] [C00000000002C9F8] kretprobe_trampoline+0x0/0x8 (unreliable)
[C000000038847D90] [C000000000059A2C] .do_group_exit+0x50/0xe4
[C000000038847E30] [C000000000008600] syscall_exit+0x0/0x18
Instruction dump:
480586a1 60000000 e81d0018 39200000 f93d0788 70000008 0b000000 e93d0018
61290008 f93d0018 48348ea1 60000000 <0fe00000> 48000000 39200001 4bfffda8
<1>Fixing recursive fault but reboot is needed!
--
http://sourceware.org/bugzilla/show_bug.cgi?id=2071
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