Created attachment 210583 [details] potential fix for show devmap problem When I break into the debugger on an armv7 machine, show devmap gives me this: db> show devmap Static device mappings: 0xffc00000e02fffff - 0x00000001 mapped at VA 0xc006dffcd619c9d0 0xfec00000f8ffffff - 0x00000001 mapped at VA 0xc006dffcd619c9d0 It should look like this: db> show devmap Static device mappings: 0xe0000000 - 0xe02fffff mapped at VA 0xffc00000 0xf8000000 - 0xf8ffffff mapped at VA 0xfec00000 Looks like its due to r355925. I have attached a potential fix but I can't test it on an aarch64 system because mine doesn't have any static device mappings.
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=9976b42b697ce203b1d257b2a6fe64c8a2961645 commit 9976b42b697ce203b1d257b2a6fe64c8a2961645 Author: Thomas Skibo <thomas-bsd@skibo.net> AuthorDate: 2021-01-11 20:58:12 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2021-02-18 15:53:14 +0000 ddb: fix show devmap output on 32-bit arm The output has been broken since 1b6dd6d772ca. Casting to uintmax_t before the call to printf is necessary to ensure that 32-bit addresses are interpreted correctly. PR: 243236 MFC after: 3 days sys/kern/subr_devmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=0a223cf980b5ef8bea726a843fe5a7faf2278330 commit 0a223cf980b5ef8bea726a843fe5a7faf2278330 Author: Thomas Skibo <thomas-bsd@skibo.net> AuthorDate: 2021-01-11 20:58:12 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2021-02-23 14:30:14 +0000 ddb: fix show devmap output on 32-bit arm The output has been broken since 1b6dd6d772ca. Casting to uintmax_t before the call to printf is necessary to ensure that 32-bit addresses are interpreted correctly. PR: 243236 (cherry picked from commit 9976b42b697ce203b1d257b2a6fe64c8a2961645) sys/kern/subr_devmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
A commit in branch releng/13.0 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=661e2b8e1486cc966304ff98f766463de07e3f02 commit 661e2b8e1486cc966304ff98f766463de07e3f02 Author: Thomas Skibo <thomas-bsd@skibo.net> AuthorDate: 2021-01-11 20:58:12 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2021-03-03 21:54:45 +0000 ddb: fix show devmap output on 32-bit arm The output has been broken since 1b6dd6d772ca. Casting to uintmax_t before the call to printf is necessary to ensure that 32-bit addresses are interpreted correctly. PR: 243236 Approved by: re (gjb) (cherry picked from commit 9976b42b697ce203b1d257b2a6fe64c8a2961645) (cherry picked from commit 0a223cf980b5ef8bea726a843fe5a7faf2278330) sys/kern/subr_devmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)