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del_timer_sync() can cause a deadlock when called in interrupt context. It is used with on_each_cpu() in some parts for sysfs files like bank*, check_interval, cmci_disabled and ignore_ce. However, use of on_each_cpu() results in calling the function passed as the argument in interrupt context. This causes a flood of nested warnings from del_timer_sync() (it runs on each CPU) caused even by a simple file access like: $ echo 300 > /sys/devices/system/machinecheck/machinecheck0/check_interval Fortunately, these MCE-specific files are rarely used and AFAIK only few MCE geeks experience this warning. To remove the warning, move timer deletion outside of the interrupt context. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> |
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| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| ia32 | ||
| include/asm | ||
| kernel | ||
| kvm | ||
| lguest | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| pci | ||
| platform | ||
| power | ||
| tools | ||
| vdso | ||
| video | ||
| xen | ||
| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||