Re: [Crash-utility] Crash-utility Digest, Vol 179, Issue 4

在 2020年08月13日 16:33, David Wysochanski 写道: How did you reproduce it? Can you help to confirm if you have applied the correct patch as below? [root@intel-sharkbay-mb-03 crash]# git diff kernel.c diff --git a/kernel.c b/kernel.c index 5ed6021..6375b24 100644 --- a/kernel.c +++ b/kernel.c @@ -4939,13 +4939,20 @@ cmd_log(void) if (argerrs) cmd_usage(pc->curcmd, SYNOPSIS); - if (kt->boot_date.tv_sec == 0) { - ulonglong uptime_jiffies; - ulong uptime_sec; - get_uptime(NULL, &uptime_jiffies); - uptime_sec = (uptime_jiffies)/(ulonglong)machdep->hz; - kt->boot_date.tv_sec = kt->date.tv_sec - uptime_sec; - kt->boot_date.tv_nsec = 0; + if (msg_flags & SHOW_LOG_CTIME) { + if (pc->flags & MINIMAL_MODE) { + error(WARNING, "the option '-T' not available in minimal mode\n"); + return; + } + + if (kt->boot_date.tv_sec == 0) { + ulonglong uptime_jiffies; + ulong uptime_sec; + get_uptime(NULL, &uptime_jiffies); + uptime_sec = (uptime_jiffies)/(ulonglong)machdep->hz; + kt->boot_date.tv_sec = kt->date.tv_sec - uptime_sec; + kt->boot_date.tv_nsec = 0; + } } if (msg_flags & SHOW_LOG_AUDIT) { I didn't see any problems, it's strange, this is my test steps. [root@intel-sharkbay-mb-03 crash]# ./crash vmlinux /var/crash/vmcore --minimal crash 7.2.8++ Copyright (C) 2002-2020 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. GNU gdb (GDB) 7.6 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... WARNING: kernel relocated [160MB]: patching 98187 gdb minimal_symbol values NOTE: minimal mode commands: log, dis, rd, sym, eval, set, extend and exit crash> log -T log: WARNING: the option '-T' not available in minimal mode crash> Tasks: 183 total, 1 running, 182 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 3527.0 total, 359.8 free, 682.5 used, 2484.7 buff/cache MiB Swap: 3816.0 total, 3804.2 free, 11.8 used. 2563.1 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 20 0 245500 13888 8968 S 0.0 0.4 0:04.86 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.06 kthreadd 3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp 4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par_gp 6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/0:0H-kblockd 9 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu_wq 10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 11 root 20 0 0 0 0 I 0.0 0.0 1:24.46 rcu_sched 12 root rt 0 0 0 0 S 0.0 0.0 0:00.03 migration/0 13 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 14 root 20 0 0 0 0 S 0.0 0.0 0:00.02 cpuhp/0 Thanks. Lianbo