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104 lines
3.6 KiB
104 lines
3.6 KiB
/* |
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* Copyright (c) 2018 Michael Moese <mmoese@suse.de> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/* Usage example |
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* |
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* ... |
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* #include "tst_test.h" |
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* #include "tst_taint.h" |
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* .. |
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* void setup(void) |
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* { |
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* ... |
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* tst_taint_init(TST_TAINT_W | TST_TAINT_D)); |
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* ... |
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* } |
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* |
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* void run(void) |
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* { |
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* ... |
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* . test code here |
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* ... |
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* if (tst_taint_check() != 0) |
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* tst_res(TFAIL, "kernel has issues"); |
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* else |
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* tst_res(TPASS, "kernel seems to be fine"); |
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* } |
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* |
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* |
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* |
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* The above code checks, if the kernel issued a warning (TST_TAINT_W) |
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* or even died (TST_TAINT_D) during test execution. |
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* If these are set after running a test case, we most likely |
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* triggered a kernel bug. |
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*/ |
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#ifndef TST_TAINTED_H__ |
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#define TST_TAINTED_H__ |
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/* |
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* This are all 17 flags that are present in kernel 4.15 |
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* see kernel/panic.c in kernel sources |
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* |
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* Not all of them are valid in all kernel versions. |
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*/ |
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#define TST_TAINT_G (1 << 0) /* a module with non-GPL license loaded */ |
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#define TST_TAINT_F (1 << 1) /* a module was force-loaded */ |
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#define TST_TAINT_S (1 << 2) /* SMP with Non-SMP kernel */ |
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#define TST_TAINT_R (1 << 3) /* module force unloaded */ |
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#define TST_TAINT_M (1 << 4) /* machine check error occurred */ |
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#define TST_TAINT_B (1 << 5) /* page-release function found bad page */ |
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#define TST_TAINT_U (1 << 6) /* user requested taint flag */ |
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#define TST_TAINT_D (1 << 7) /* kernel died recently - OOPS or BUG */ |
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#define TST_TAINT_A (1 << 8) /* ACPI table has been overwritten */ |
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#define TST_TAINT_W (1 << 9) /* a warning has been issued by kernel */ |
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#define TST_TAINT_C (1 << 10) /* driver from drivers/staging was loaded */ |
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#define TST_TAINT_I (1 << 11) /* working around BIOS/Firmware bug */ |
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#define TST_TAINT_O (1 << 12) /* out of tree module loaded */ |
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#define TST_TAINT_E (1 << 13) /* unsigned module was loaded */ |
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#define TST_TAINT_L (1 << 14) /* A soft lock-up has previously occurred */ |
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#define TST_TAINT_K (1 << 15) /* kernel has been live-patched */ |
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#define TST_TAINT_X (1 << 16) /* auxiliary taint, for distro's use */ |
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/* |
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* Initialize and prepare support for checking tainted kernel. |
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* |
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* supply the mask of TAINT-flags you want to check, for example |
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* (TST_TAINT_W | TST_TAINT_D) when you want to check if the kernel issued |
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* a warning or even reported it died. |
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* |
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* This function tests if the requested flags are supported on the |
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* locally running kernel. In case the tainted-flags are already set by |
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* the kernel, there is no reason to continue and TCONF is generated. |
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* |
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* The mask must not be zero. |
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*/ |
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void tst_taint_init(unsigned int mask); |
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/* |
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* check if the tainted flags handed to tst_taint_init() are still not set |
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* during or after running the test. |
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* Calling this function is only allowed after tst_taint_init() was called, |
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* otherwise TBROK will be generated. |
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* |
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* returns 0 or a bitmask of the flags that currently tainted the kernel. |
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*/ |
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unsigned int tst_taint_check(void); |
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#endif /* TST_TAINTED_H__ */
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