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(#2024502) fix(shutdown): be robust against forced shutdown #20

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merged 1 commit into from Feb 9, 2022

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When a forced shutdown is issued through sending a burst of Ctrl-Alt-Del
keys, systemd sends SIGTERM to all processes. This ends up killing
dracut-initramfs-restore as well, preventing the script from detecting
that the unpack of the initramfs is incomplete, which later causes a
crash to happen when "shutdown" tries to execute from the unpacked
initramfs.

This fix makes sure dracut-initramfs-restore remains alive to detect
the unpack failed (because cpio was killed by systemd too).

Refs:
 * https://bugzilla.redhat.com/show_bug.cgi?id=2023665
(cherry picked from commit b9ba3c8)

Resolves: #2024502
@systemd-rhel-bot systemd-rhel-bot merged commit cecc1fb into redhat-plumbers:main Feb 9, 2022
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LGTM.

pvalena pushed a commit to pvalena/dracut-rhel9 that referenced this pull request Nov 14, 2023
in install_dependent_modules we use &path[kerneldirlen] as the key for inserting,
let's do the same for checking.

otherwise installing kernel module has circular dependency from a custom kernel
module directory will cause infinite recursion and segfault.

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.dep
kernel/drivers/char/ipmi/ipmi_msghandler.ko:
kernel/drivers/char/ipmi/ipmi_devintf.ko: kernel/drivers/char/ipmi/ipmi_msghandler.ko

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.softdep
softdep ipmi_msghandler post: ipmi_devintf

$ ./dracut-install -D /tmp --kerneldir ~/working/kernel/linux-5.10.121/kbuilt/lib/modules/5.10.121 -m ipmi-devintf
Segmentation fault (core dumped)

(gdb) b install_dependent_modules
Breakpoint 1 at 0x7db0: file src/install/dracut-install.c, line 1513.
(gdb) bt
#0  install_dependent_modules (modlist=0x0) at src/install/dracut-install.c:1513
#1  0x000055555555c027 in install_dependent_modules (modlist=modlist@entry=0x555555579e90) at src/install/dracut-install.c:1553
#2  0x000055555555bf1c in install_dependent_modules (modlist=0x5555555799d0) at src/install/dracut-install.c:1548
redhat-plumbers#3  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557a3f0) at src/install/dracut-install.c:1554
redhat-plumbers#4  0x000055555555bf1c in install_dependent_modules (modlist=0x555555579d60) at src/install/dracut-install.c:1548
redhat-plumbers#5  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557b170) at src/install/dracut-install.c:1554
redhat-plumbers#6  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557a0f0) at src/install/dracut-install.c:1548
redhat-plumbers#7  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555575320) at src/install/dracut-install.c:1554
redhat-plumbers#8  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557ab30) at src/install/dracut-install.c:1548
redhat-plumbers#9  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557dd60) at src/install/dracut-install.c:1554
redhat-plumbers#10 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b640) at src/install/dracut-install.c:1548
redhat-plumbers#11 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e0f0) at src/install/dracut-install.c:1554
redhat-plumbers#12 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b9d0) at src/install/dracut-install.c:1548
redhat-plumbers#13 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574340) at src/install/dracut-install.c:1554
redhat-plumbers#14 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557cf70) at src/install/dracut-install.c:1548
redhat-plumbers#15 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x5555555768d0) at src/install/dracut-install.c:1554
redhat-plumbers#16 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557d750) at src/install/dracut-install.c:1548
redhat-plumbers#17 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e700) at src/install/dracut-install.c:1554
redhat-plumbers#18 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557de90) at src/install/dracut-install.c:1548
redhat-plumbers#19 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555581c90) at src/install/dracut-install.c:1554
redhat-plumbers#20 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571e60) at src/install/dracut-install.c:1548
redhat-plumbers#21 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b620) at src/install/dracut-install.c:1554
redhat-plumbers#22 0x000055555555bf1c in install_dependent_modules (modlist=0x555555583000) at src/install/dracut-install.c:1548
redhat-plumbers#23 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b640) at src/install/dracut-install.c:1554
redhat-plumbers#24 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571b40) at src/install/dracut-install.c:1548
redhat-plumbers#25 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574100) at src/install/dracut-install.c:1554
redhat-plumbers#26 0x000055555555c4b0 in install_module (mod=mod@entry=0x555555573bc0) at src/install/dracut-install.c:1617
redhat-plumbers#27 0x000055555555c93d in install_modules (argc=argc@entry=1, argv=argv@entry=0x7fffffffd6e0) at src/install/dracut-install.c:1952
redhat-plumbers#28 0x000055555555862a in main (argc=<optimized out>, argv=0x7fffffffd6a8) at src/install/dracut-install.c:2090

Signed-off-by: runsisi <runsisi@hust.edu.cn>
pvalena pushed a commit to pvalena/dracut-rhel9 that referenced this pull request Nov 15, 2023
in install_dependent_modules we use &path[kerneldirlen] as the key for inserting,
let's do the same for checking.

otherwise installing kernel module has circular dependency from a custom kernel
module directory will cause infinite recursion and segfault.

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.dep
kernel/drivers/char/ipmi/ipmi_msghandler.ko:
kernel/drivers/char/ipmi/ipmi_devintf.ko: kernel/drivers/char/ipmi/ipmi_msghandler.ko

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.softdep
softdep ipmi_msghandler post: ipmi_devintf

$ ./dracut-install -D /tmp --kerneldir ~/working/kernel/linux-5.10.121/kbuilt/lib/modules/5.10.121 -m ipmi-devintf
Segmentation fault (core dumped)

(gdb) b install_dependent_modules
Breakpoint 1 at 0x7db0: file src/install/dracut-install.c, line 1513.
(gdb) bt
  #0  install_dependent_modules (modlist=0x0) at src/install/dracut-install.c:1513
  #1  0x000055555555c027 in install_dependent_modules (modlist=modlist@entry=0x555555579e90) at src/install/dracut-install.c:1553
  #2  0x000055555555bf1c in install_dependent_modules (modlist=0x5555555799d0) at src/install/dracut-install.c:1548
  redhat-plumbers#3  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557a3f0) at src/install/dracut-install.c:1554
  redhat-plumbers#4  0x000055555555bf1c in install_dependent_modules (modlist=0x555555579d60) at src/install/dracut-install.c:1548
  redhat-plumbers#5  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557b170) at src/install/dracut-install.c:1554
  redhat-plumbers#6  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557a0f0) at src/install/dracut-install.c:1548
  redhat-plumbers#7  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555575320) at src/install/dracut-install.c:1554
  redhat-plumbers#8  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557ab30) at src/install/dracut-install.c:1548
  redhat-plumbers#9  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557dd60) at src/install/dracut-install.c:1554
  redhat-plumbers#10 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b640) at src/install/dracut-install.c:1548
  redhat-plumbers#11 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e0f0) at src/install/dracut-install.c:1554
  redhat-plumbers#12 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b9d0) at src/install/dracut-install.c:1548
  redhat-plumbers#13 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574340) at src/install/dracut-install.c:1554
  redhat-plumbers#14 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557cf70) at src/install/dracut-install.c:1548
  redhat-plumbers#15 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x5555555768d0) at src/install/dracut-install.c:1554
  redhat-plumbers#16 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557d750) at src/install/dracut-install.c:1548
  redhat-plumbers#17 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e700) at src/install/dracut-install.c:1554
  redhat-plumbers#18 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557de90) at src/install/dracut-install.c:1548
  redhat-plumbers#19 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555581c90) at src/install/dracut-install.c:1554
  redhat-plumbers#20 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571e60) at src/install/dracut-install.c:1548
  redhat-plumbers#21 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b620) at src/install/dracut-install.c:1554
  redhat-plumbers#22 0x000055555555bf1c in install_dependent_modules (modlist=0x555555583000) at src/install/dracut-install.c:1548
  redhat-plumbers#23 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b640) at src/install/dracut-install.c:1554
  redhat-plumbers#24 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571b40) at src/install/dracut-install.c:1548
  redhat-plumbers#25 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574100) at src/install/dracut-install.c:1554
  redhat-plumbers#26 0x000055555555c4b0 in install_module (mod=mod@entry=0x555555573bc0) at src/install/dracut-install.c:1617
  redhat-plumbers#27 0x000055555555c93d in install_modules (argc=argc@entry=1, argv=argv@entry=0x7fffffffd6e0) at src/install/dracut-install.c:1952
  redhat-plumbers#28 0x000055555555862a in main (argc=<optimized out>, argv=0x7fffffffd6a8) at src/install/dracut-install.c:2090

Signed-off-by: runsisi <runsisi@hust.edu.cn>

(Cherry-picked commit: 7bb1f64b972586d86d82fcb23de4b979eab0ddfe)

Resolves: RHEL-15821
pvalena pushed a commit that referenced this pull request Dec 14, 2023
in install_dependent_modules we use &path[kerneldirlen] as the key for inserting,
let's do the same for checking.

otherwise installing kernel module has circular dependency from a custom kernel
module directory will cause infinite recursion and segfault.

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.dep
kernel/drivers/char/ipmi/ipmi_msghandler.ko:
kernel/drivers/char/ipmi/ipmi_devintf.ko: kernel/drivers/char/ipmi/ipmi_msghandler.ko

$ grep ipmi kbuilt/lib/modules/5.10.121/modules.softdep
softdep ipmi_msghandler post: ipmi_devintf

$ ./dracut-install -D /tmp --kerneldir ~/working/kernel/linux-5.10.121/kbuilt/lib/modules/5.10.121 -m ipmi-devintf
Segmentation fault (core dumped)

(gdb) b install_dependent_modules
Breakpoint 1 at 0x7db0: file src/install/dracut-install.c, line 1513.
(gdb) bt
  #0  install_dependent_modules (modlist=0x0) at src/install/dracut-install.c:1513
  #1  0x000055555555c027 in install_dependent_modules (modlist=modlist@entry=0x555555579e90) at src/install/dracut-install.c:1553
  #2  0x000055555555bf1c in install_dependent_modules (modlist=0x5555555799d0) at src/install/dracut-install.c:1548
  #3  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557a3f0) at src/install/dracut-install.c:1554
  #4  0x000055555555bf1c in install_dependent_modules (modlist=0x555555579d60) at src/install/dracut-install.c:1548
  #5  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557b170) at src/install/dracut-install.c:1554
  #6  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557a0f0) at src/install/dracut-install.c:1548
  #7  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555575320) at src/install/dracut-install.c:1554
  #8  0x000055555555bf1c in install_dependent_modules (modlist=0x55555557ab30) at src/install/dracut-install.c:1548
  #9  0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557dd60) at src/install/dracut-install.c:1554
  #10 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b640) at src/install/dracut-install.c:1548
  #11 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e0f0) at src/install/dracut-install.c:1554
  #12 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557b9d0) at src/install/dracut-install.c:1548
  #13 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574340) at src/install/dracut-install.c:1554
  #14 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557cf70) at src/install/dracut-install.c:1548
  #15 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x5555555768d0) at src/install/dracut-install.c:1554
  #16 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557d750) at src/install/dracut-install.c:1548
  #17 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555557e700) at src/install/dracut-install.c:1554
  #18 0x000055555555bf1c in install_dependent_modules (modlist=0x55555557de90) at src/install/dracut-install.c:1548
  #19 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555581c90) at src/install/dracut-install.c:1554
  #20 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571e60) at src/install/dracut-install.c:1548
  #21 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b620) at src/install/dracut-install.c:1554
  #22 0x000055555555bf1c in install_dependent_modules (modlist=0x555555583000) at src/install/dracut-install.c:1548
  #23 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x55555556b640) at src/install/dracut-install.c:1554
  #24 0x000055555555bf1c in install_dependent_modules (modlist=0x555555571b40) at src/install/dracut-install.c:1548
  #25 0x000055555555c034 in install_dependent_modules (modlist=modlist@entry=0x555555574100) at src/install/dracut-install.c:1554
  #26 0x000055555555c4b0 in install_module (mod=mod@entry=0x555555573bc0) at src/install/dracut-install.c:1617
  #27 0x000055555555c93d in install_modules (argc=argc@entry=1, argv=argv@entry=0x7fffffffd6e0) at src/install/dracut-install.c:1952
  #28 0x000055555555862a in main (argc=<optimized out>, argv=0x7fffffffd6a8) at src/install/dracut-install.c:2090

Signed-off-by: runsisi <runsisi@hust.edu.cn>

(Cherry-picked commit: 7bb1f64b972586d86d82fcb23de4b979eab0ddfe)

Resolves: RHEL-15821
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4 participants