Re: "test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:589" at boot with CONFIG_CHECKSUM_KUNIT=y enabled on a Talos II, kernel 6.8-rc5

From: Christophe Leroy
Date: Fri Feb 23 2024 - 00:59:26 EST

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Next in thread: Charlie Jenkins: "Re: "test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:589" at boot with CONFIG_CHECKSUM_KUNIT=y enabled on a Talos II, kernel 6.8-rc5"
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Hi Erhard, hi Charlie,

Le 23/02/2024 à 02:26, Erhard Furtner a écrit :
> Greetings!
>
> Looks like my Talos II (running a BE kernel+system) fails some of the kernels internal unit tests. One of the failing tests is checksum_kunit, enabled via CONFIG_CHECKSUM_KUNIT=y:
>
> [...]
> KTAP version 1
> # Subtest: checksum
> # module: checksum_kunit
> 1..5
> entry-flush: disabled on command line.
> ok 1 test_csum_fixed_random_inputs
> ok 2 test_csum_all_carry_inputs
> ok 3 test_csum_no_carry_inputs
> # test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:589
> Expected ( u64)expected == ( u64)csum_result, but
> ( u64)expected == 55939 (0xda83)
> ( u64)csum_result == 33754 (0x83da)
> not ok 4 test_ip_fast_csum
> # test_csum_ipv6_magic: ASSERTION FAILED at lib/checksum_kunit.c:617
> Expected ( u64)expected_csum_ipv6_magic[i] == ( u64)csum_ipv6_magic(saddr, daddr, len, proto, csum), but
> ( u64)expected_csum_ipv6_magic[i] == 6356 (0x18d4)
> ( u64)csum_ipv6_magic(saddr, daddr, len, proto, csum) == 43586 (0xaa42)
> not ok 5 test_csum_ipv6_magic
> # checksum: pass:3 fail:2 skip:0 total:5
> # Totals: pass:3 fail:2 skip:0 total:5
> not ok 4 checksum
> [...]
>
> Full dmesg + kernel .config attached.

Looks like the same problem as the one I fixed with commit b38460bc463c
("kunit: Fix checksum tests on big endian CPUs")

The new tests implemented through commit 6f4c45cbcb00 ("kunit: Add tests
for csum_ipv6_magic and ip_fast_csum") create a lot of type issues as
reported by sparse when built with C=2 (see below).

Once those issues are fixed, it should work.

Charlie, can you provide a fix ?

Thanks,
Christophe

CC lib/checksum_kunit.o
CHECK lib/checksum_kunit.c
lib/checksum_kunit.c:219:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:9: expected restricted __sum16
lib/checksum_kunit.c:219:9: got int
lib/checksum_kunit.c:219:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:17: expected restricted __sum16
lib/checksum_kunit.c:219:17: got int
lib/checksum_kunit.c:219:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:25: expected restricted __sum16
lib/checksum_kunit.c:219:25: got int
lib/checksum_kunit.c:219:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:33: expected restricted __sum16
lib/checksum_kunit.c:219:33: got int
lib/checksum_kunit.c:219:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:41: expected restricted __sum16
lib/checksum_kunit.c:219:41: got int
lib/checksum_kunit.c:219:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:49: expected restricted __sum16
lib/checksum_kunit.c:219:49: got int
lib/checksum_kunit.c:219:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:57: expected restricted __sum16
lib/checksum_kunit.c:219:57: got int
lib/checksum_kunit.c:219:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:65: expected restricted __sum16
lib/checksum_kunit.c:219:65: got int
lib/checksum_kunit.c:219:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:219:73: expected restricted __sum16
lib/checksum_kunit.c:219:73: got int
lib/checksum_kunit.c:220:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:9: expected restricted __sum16
lib/checksum_kunit.c:220:9: got int
lib/checksum_kunit.c:220:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:17: expected restricted __sum16
lib/checksum_kunit.c:220:17: got int
lib/checksum_kunit.c:220:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:25: expected restricted __sum16
lib/checksum_kunit.c:220:25: got int
lib/checksum_kunit.c:220:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:33: expected restricted __sum16
lib/checksum_kunit.c:220:33: got int
lib/checksum_kunit.c:220:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:41: expected restricted __sum16
lib/checksum_kunit.c:220:41: got int
lib/checksum_kunit.c:220:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:49: expected restricted __sum16
lib/checksum_kunit.c:220:49: got int
lib/checksum_kunit.c:220:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:57: expected restricted __sum16
lib/checksum_kunit.c:220:57: got int
lib/checksum_kunit.c:220:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:65: expected restricted __sum16
lib/checksum_kunit.c:220:65: got int
lib/checksum_kunit.c:220:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:220:73: expected restricted __sum16
lib/checksum_kunit.c:220:73: got int
lib/checksum_kunit.c:221:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:9: expected restricted __sum16
lib/checksum_kunit.c:221:9: got int
lib/checksum_kunit.c:221:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:17: expected restricted __sum16
lib/checksum_kunit.c:221:17: got int
lib/checksum_kunit.c:221:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:25: expected restricted __sum16
lib/checksum_kunit.c:221:25: got int
lib/checksum_kunit.c:221:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:33: expected restricted __sum16
lib/checksum_kunit.c:221:33: got int
lib/checksum_kunit.c:221:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:41: expected restricted __sum16
lib/checksum_kunit.c:221:41: got int
lib/checksum_kunit.c:221:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:49: expected restricted __sum16
lib/checksum_kunit.c:221:49: got int
lib/checksum_kunit.c:221:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:57: expected restricted __sum16
lib/checksum_kunit.c:221:57: got int
lib/checksum_kunit.c:221:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:65: expected restricted __sum16
lib/checksum_kunit.c:221:65: got int
lib/checksum_kunit.c:221:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:221:73: expected restricted __sum16
lib/checksum_kunit.c:221:73: got int
lib/checksum_kunit.c:222:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:9: expected restricted __sum16
lib/checksum_kunit.c:222:9: got int
lib/checksum_kunit.c:222:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:17: expected restricted __sum16
lib/checksum_kunit.c:222:17: got int
lib/checksum_kunit.c:222:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:25: expected restricted __sum16
lib/checksum_kunit.c:222:25: got int
lib/checksum_kunit.c:222:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:33: expected restricted __sum16
lib/checksum_kunit.c:222:33: got int
lib/checksum_kunit.c:222:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:41: expected restricted __sum16
lib/checksum_kunit.c:222:41: got int
lib/checksum_kunit.c:222:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:49: expected restricted __sum16
lib/checksum_kunit.c:222:49: got int
lib/checksum_kunit.c:222:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:57: expected restricted __sum16
lib/checksum_kunit.c:222:57: got int
lib/checksum_kunit.c:222:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:65: expected restricted __sum16
lib/checksum_kunit.c:222:65: got int
lib/checksum_kunit.c:222:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:222:73: expected restricted __sum16
lib/checksum_kunit.c:222:73: got int
lib/checksum_kunit.c:223:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:9: expected restricted __sum16
lib/checksum_kunit.c:223:9: got int
lib/checksum_kunit.c:223:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:17: expected restricted __sum16
lib/checksum_kunit.c:223:17: got int
lib/checksum_kunit.c:223:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:25: expected restricted __sum16
lib/checksum_kunit.c:223:25: got int
lib/checksum_kunit.c:223:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:33: expected restricted __sum16
lib/checksum_kunit.c:223:33: got int
lib/checksum_kunit.c:223:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:41: expected restricted __sum16
lib/checksum_kunit.c:223:41: got int
lib/checksum_kunit.c:223:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:49: expected restricted __sum16
lib/checksum_kunit.c:223:49: got int
lib/checksum_kunit.c:223:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:57: expected restricted __sum16
lib/checksum_kunit.c:223:57: got int
lib/checksum_kunit.c:223:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:65: expected restricted __sum16
lib/checksum_kunit.c:223:65: got int
lib/checksum_kunit.c:223:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:223:73: expected restricted __sum16
lib/checksum_kunit.c:223:73: got int
lib/checksum_kunit.c:224:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:9: expected restricted __sum16
lib/checksum_kunit.c:224:9: got int
lib/checksum_kunit.c:224:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:17: expected restricted __sum16
lib/checksum_kunit.c:224:17: got int
lib/checksum_kunit.c:224:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:25: expected restricted __sum16
lib/checksum_kunit.c:224:25: got int
lib/checksum_kunit.c:224:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:33: expected restricted __sum16
lib/checksum_kunit.c:224:33: got int
lib/checksum_kunit.c:224:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:41: expected restricted __sum16
lib/checksum_kunit.c:224:41: got int
lib/checksum_kunit.c:224:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:49: expected restricted __sum16
lib/checksum_kunit.c:224:49: got int
lib/checksum_kunit.c:224:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:57: expected restricted __sum16
lib/checksum_kunit.c:224:57: got int
lib/checksum_kunit.c:224:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:65: expected restricted __sum16
lib/checksum_kunit.c:224:65: got int
lib/checksum_kunit.c:224:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:224:73: expected restricted __sum16
lib/checksum_kunit.c:224:73: got int
lib/checksum_kunit.c:225:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:9: expected restricted __sum16
lib/checksum_kunit.c:225:9: got int
lib/checksum_kunit.c:225:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:17: expected restricted __sum16
lib/checksum_kunit.c:225:17: got int
lib/checksum_kunit.c:225:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:25: expected restricted __sum16
lib/checksum_kunit.c:225:25: got int
lib/checksum_kunit.c:225:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:33: expected restricted __sum16
lib/checksum_kunit.c:225:33: got int
lib/checksum_kunit.c:225:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:41: expected restricted __sum16
lib/checksum_kunit.c:225:41: got int
lib/checksum_kunit.c:225:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:49: expected restricted __sum16
lib/checksum_kunit.c:225:49: got int
lib/checksum_kunit.c:225:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:57: expected restricted __sum16
lib/checksum_kunit.c:225:57: got int
lib/checksum_kunit.c:225:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:65: expected restricted __sum16
lib/checksum_kunit.c:225:65: got int
lib/checksum_kunit.c:225:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:225:73: expected restricted __sum16
lib/checksum_kunit.c:225:73: got int
lib/checksum_kunit.c:226:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:9: expected restricted __sum16
lib/checksum_kunit.c:226:9: got int
lib/checksum_kunit.c:226:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:17: expected restricted __sum16
lib/checksum_kunit.c:226:17: got int
lib/checksum_kunit.c:226:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:25: expected restricted __sum16
lib/checksum_kunit.c:226:25: got int
lib/checksum_kunit.c:226:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:33: expected restricted __sum16
lib/checksum_kunit.c:226:33: got int
lib/checksum_kunit.c:226:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:41: expected restricted __sum16
lib/checksum_kunit.c:226:41: got int
lib/checksum_kunit.c:226:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:49: expected restricted __sum16
lib/checksum_kunit.c:226:49: got int
lib/checksum_kunit.c:226:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:57: expected restricted __sum16
lib/checksum_kunit.c:226:57: got int
lib/checksum_kunit.c:226:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:65: expected restricted __sum16
lib/checksum_kunit.c:226:65: got int
lib/checksum_kunit.c:226:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:226:73: expected restricted __sum16
lib/checksum_kunit.c:226:73: got int
lib/checksum_kunit.c:227:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:9: expected restricted __sum16
lib/checksum_kunit.c:227:9: got int
lib/checksum_kunit.c:227:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:17: expected restricted __sum16
lib/checksum_kunit.c:227:17: got int
lib/checksum_kunit.c:227:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:25: expected restricted __sum16
lib/checksum_kunit.c:227:25: got int
lib/checksum_kunit.c:227:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:33: expected restricted __sum16
lib/checksum_kunit.c:227:33: got int
lib/checksum_kunit.c:227:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:41: expected restricted __sum16
lib/checksum_kunit.c:227:41: got int
lib/checksum_kunit.c:227:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:49: expected restricted __sum16
lib/checksum_kunit.c:227:49: got int
lib/checksum_kunit.c:227:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:57: expected restricted __sum16
lib/checksum_kunit.c:227:57: got int
lib/checksum_kunit.c:227:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:65: expected restricted __sum16
lib/checksum_kunit.c:227:65: got int
lib/checksum_kunit.c:227:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:227:73: expected restricted __sum16
lib/checksum_kunit.c:227:73: got int
lib/checksum_kunit.c:228:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:9: expected restricted __sum16
lib/checksum_kunit.c:228:9: got int
lib/checksum_kunit.c:228:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:17: expected restricted __sum16
lib/checksum_kunit.c:228:17: got int
lib/checksum_kunit.c:228:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:25: expected restricted __sum16
lib/checksum_kunit.c:228:25: got int
lib/checksum_kunit.c:228:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:33: expected restricted __sum16
lib/checksum_kunit.c:228:33: got int
lib/checksum_kunit.c:228:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:41: expected restricted __sum16
lib/checksum_kunit.c:228:41: got int
lib/checksum_kunit.c:228:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:49: expected restricted __sum16
lib/checksum_kunit.c:228:49: got int
lib/checksum_kunit.c:228:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:57: expected restricted __sum16
lib/checksum_kunit.c:228:57: got int
lib/checksum_kunit.c:228:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:65: expected restricted __sum16
lib/checksum_kunit.c:228:65: got int
lib/checksum_kunit.c:228:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:228:73: expected restricted __sum16
lib/checksum_kunit.c:228:73: got int
lib/checksum_kunit.c:229:9: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:9: expected restricted __sum16
lib/checksum_kunit.c:229:9: got int
lib/checksum_kunit.c:229:17: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:17: expected restricted __sum16
lib/checksum_kunit.c:229:17: got int
lib/checksum_kunit.c:229:25: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:25: expected restricted __sum16
lib/checksum_kunit.c:229:25: got int
lib/checksum_kunit.c:229:33: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:33: expected restricted __sum16
lib/checksum_kunit.c:229:33: got int
lib/checksum_kunit.c:229:41: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:41: expected restricted __sum16
lib/checksum_kunit.c:229:41: got int
lib/checksum_kunit.c:229:49: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:49: expected restricted __sum16
lib/checksum_kunit.c:229:49: got int
lib/checksum_kunit.c:229:57: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:57: expected restricted __sum16
lib/checksum_kunit.c:229:57: got int
lib/checksum_kunit.c:229:65: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:65: expected restricted __sum16
lib/checksum_kunit.c:229:65: got int
lib/checksum_kunit.c:229:73: warning: incorrect type in initializer
(different base types)
lib/checksum_kunit.c:229:73: expected restricted __sum16
lib/checksum_kunit.c:229:73: got int
lib/checksum_kunit.c:230:9: warning: too many warnings

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Next in thread: Charlie Jenkins: "Re: "test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:589" at boot with CONFIG_CHECKSUM_KUNIT=y enabled on a Talos II, kernel 6.8-rc5"
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