Date: Tue, 29 Mar 2016 11:30:36 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 208365] [umass] Cannot fsck 3TB USB disk Message-ID: <bug-208365-6-EJUSF97AWc@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-208365-6@https.bugs.freebsd.org/bugzilla/> References: <bug-208365-6@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D208365 --- Comment #10 from Hans Petter Selasky <hselasky@FreeBSD.org> --- I'm able to reproduce the problem using the following kernel patch and test-program on the latest and greatest 11-current: diff --git a/sys/x86/x86/busdma_machdep.c b/sys/x86/x86/busdma_machdep.c index c96b26d..a4c0af7 100644 --- a/sys/x86/x86/busdma_machdep.c +++ b/sys/x86/x86/busdma_machdep.c @@ -97,6 +97,13 @@ bus_dma_run_filter(struct bus_dma_tag_common *tc, bus_ad= dr_t paddr) { int retval; + if (tc->flags & BUS_DMA_KEEP_PG_OFFSET) { + if ((paddr % 3) =3D=3D 0) { + printf("F"); + return (1); + } + } + retval =3D 0; do { if (((paddr > tc->lowaddr && paddr <=3D tc->highaddr) || cat << EOF > test.c #include <stdio.h> #include <fcntl.h> #include <unistd.h> #include <stdlib.h> int main() { int fd =3D open("/dev/da0", O_RDONLY); char buffer[65536]; int y; if (fd < 0) return (0); y =3D 65536; while (1) { (void) malloc(512); if (lseek(fd, 0, 0) < 0) printf("ERROR seek\n"); if (read(fd, buffer, y) !=3D y) printf("ERROR read\n"); } close(fd); return (0); } EOF Memory stick is connected through USB 3.0 port XHCI. It appears that when bounce pages are mixed with non-bounce pages the probl= em happens. --=20 You are receiving this mail because: You are on the CC list for the bug.=
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