Hi Hagio-san, I should have checked the warning. Thank you for your review and your additional fix. Thanks, Shogo Matsumoto -----Original Message----- > > This patch set introduces -s option for log builtin command to display > > printk safe buffers (safe_print_seq/nmi_print_seq) as follows: > > > > === > > crash> log -s > > PRINTK_SAFE_SEQ_BUF: nmi_print_seq > > CPU: 0 ADDR: ffff969d7bc19ce0 LEN: 150 MESSAGE_LOST: 0 > > Uhhuh. NMI received for unknown reason 20 on CPU 0. > > Do you have a strange power saving mode enabled? > > Dazed and confused, but trying to continue > > ... > > === > > > > The printk safe buffers are also displayed at the bottom of > > 'log' output so as not to overlook them. > > > > === > > crash> log > > ... > > [nmi_print_seq] Uhhuh. NMI received for unknown reason 20 on CPU 0. > > [nmi_print_seq] Do you have a strange power saving mode enabled? > > [nmi_print_seq] Dazed and confused, but trying to continue > > === > > > > -m and -t options are also supported. > > > > Note that the safe buffer (struct printk_safe_seq_buf) was introduced > > in kernel-4.11 (Merge commit 7d91de74436a69c2b78a7a72f1e7f97f8b4396fa) > > and removed in kernel-5.15 (93d102f094be9beab28e5afb656c188b16a3793b). > > > > Changes since v2: > > - Add support new options -s, -t, -m (Kazu) > > - Add help text (Kazu) > > Thank you for the update. > > Maybe I will join the patches into two or three and the following warning > is emitted, so I will adjust a little when merging, but otherwise the > patchset and the output of the commands look nice to me! > > Acked-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; > > > $ make clean ; make warn > ... > cc -c -g -DX86_64 -DLZO -DSNAPPY -DGDB_10_2 kernel.c -Wall -O2 > -Wstrict-prototypes -Wmissing-prototypes -fstack-protector -Wformat-security > kernel.c: In function ‘__dump_printk_safe_seq_buf’: > > Will add "%s". > > Thanks, > Kazu > > > > > [v1]: > https://listman.redhat.com/archives/crash-utility/2021-December/msg00031.ht > ml > > [v2]: > https://listman.redhat.com/archives/crash-utility/2022-January/msg00004.html > > > > Test program is attached in the above v2 patch e-mail. > > > > Shogo Matsumoto (7): > > log: introduce -s option > > log: adjust indent and line breaks for log -s > > log: append printk safe buffer output to 'log' > > log: add support -t option for output of printk safe buffers > > log: add support -m for output of printk safe buffers > > symbols: add support 'help -o' for printk safe buffers > > log: add help text for printk safe buffers > > > > defs.h | 5 ++ > > help.c | 25 ++++++++- > > kernel.c | 159 > +++++++++++++++++++++++++++++++++++++++++++++++++++ > ++- > > symbols.c | 5 ++ > > 4 files changed, 192 insertions(+), 2 deletions(-) > > > > -- > > 2.29.2 > > > > > > -- > > Crash-utility mailing list > > Crash-utility(a)redhat.com > > https://listman.redhat.com/mailman/listinfo/crash-utility