Date: Wed, 12 Oct 2005 15:53:23 +0400 From: Andrew Belashov <bel@orel.ru> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: freebsd-sparc64@FreeBSD.org Subject: Re: sparc64/80410: netgraph is causing crash with mpd on sparc64 Message-ID: <434CF933.1020601@orel.ru> In-Reply-To: <200509080711.j887Bokb036115@freefall.freebsd.org> References: <200509080711.j887Bokb036115@freefall.freebsd.org>
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Hello, Gleb! Gleb Smirnoff wrote: > Synopsis: netgraph is causing crash with mpd on sparc64 > > State-Changed-From-To: open->feedback > State-Changed-By: glebius > State-Changed-When: Thu Sep 8 07:11:36 GMT 2005 > State-Changed-Why: > Can you please merge the revision 1.57 of src/sys/netgraph/ng_ksocket.c > into your kernel and try to reproduce the problem. > > > http://www.freebsd.org/cgi/query-pr.cgi?pr=80410 > This revision does not resolve problem. The problem is sparc specific. i386 has no alignment constraints (a small speed hit though). ===[debug log]========================================================= This GDB was configured as "sparc64-portbld-freebsd5.4"... panic: trap: memory address not aligned panic messages: --- panic: trap: memory address not aligned cpuid = 0 KDB: enter: panic panic: from debugger cpuid = 0 boot() called on cpu#0 Uptime: 3m2s Dumping 1024 MB (2 chunks) chunk at 0x80000000: 536870912 bytes |\^H --- #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:246 246 savectx(&dumppcb); (kgdb) bt #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:246 #1 0x00000000c01829d8 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:411 #2 0x00000000c0183244 in panic (fmt=0xc03b4b80 "from debugger") at /usr/src/sys/kern/kern_shutdown.c:567 #3 0x00000000c0065b08 in db_panic (addr=3222937208, have_addr=0, count=-1, modif=0xe0258950 "") at /usr/src/sys/ddb/db_command.c:435 #4 0x00000000c0065c44 in db_command_loop () at /usr/src/sys/ddb/db_command.c:349 #5 0x00000000c00686c8 in db_trap (type=107, code=0) at /usr/src/sys/ddb/db_main.c:210 #6 0x00000000c01a2468 in kdb_trap (type=107, code=0, tf=0x1) at /usr/src/sys/kern/subr_kdb.c:470 #7 0x00000000c0324f64 in trap (tf=0xe0258d20) at /usr/src/sys/sparc64/sparc64/trap.c:307 #8 0x00000000c01a1e78 in kdb_enter (msg=---Can't read userspace from dump, or kernel process--- ) at /usr/src/sys/kern/subr_kdb.c:265 #9 0x00000000c01a1e70 in kdb_enter (msg=0xc03d29f0 "panic") at /usr/src/sys/kern/subr_kdb.c:265 #10 0x00000000c01832b4 in panic (fmt=0xc03eb5f0 "trap: %s") at atomic.h:278 #11 0x00000000c0324e7c in trap (tf=0xe0259120) at /usr/src/sys/sparc64/sparc64/trap.c:369 #12 0x00000000c022e920 in tcp_input (m=0xfffff800b08ac900, off0=64) at /usr/src/sys/netinet/tcp_input.c:538 #13 0x00000000c022e90c in tcp_input (m=0xfffff800b08ac900, off0=20) at /usr/src/sys/netinet/tcp_input.c:535 #14 0x00000000c0225210 in ip_input (m=0xfffff800b08ac900) at /usr/src/sys/netinet/ip_input.c:776 #15 0x00000000c020fbbc in netisr_processqueue (ni=0xc0453158) at /usr/src/sys/net/netisr.c:235 #16 0x00000000c020ff34 in swi_net (dummy=0x0) at atomic.h:278 #17 0x00000000c016a084 in ithread_loop (arg=0xfffff8008042f700) at /usr/src/sys/kern/kern_intr.c:547 #18 0x00000000c0168948 in fork_exit (callout=0xc0169f60 <ithread_loop>, arg=0xfffff8008042f700, frame=0xe0259880) at /usr/src/sys/kern/kern_fork.c:791 (kgdb) frame 14 #14 0x00000000c0225210 in ip_input (m=0xfffff800b08ac900) at /usr/src/sys/netinet/ip_input.c:776 776 (*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen); (kgdb) p ip $1 = (struct ip *) 0xfffff800b081a035 ------------------------------------^ (memory address not aligned) (kgdb) p ip[0] $2 = {ip_v = 0, ip_hl = 0, ip_tos = 0 '\0', ip_len = 0, ip_id = 0, ip_off = 0, ip_ttl = 0 '\0', ip_p = 6 '\006', ip_sum = 42107, ip_src = { s_addr = 167772162}, ip_dst = {s_addr = 168427777}} (kgdb) p/x ip[0] $3 = {ip_v = 0x0, ip_hl = 0x0, ip_tos = 0x0, ip_len = 0x0, ip_id = 0x0, ip_off = 0x0, ip_ttl = 0x0, ip_p = 0x6, ip_sum = 0xa47b, ip_src = { s_addr = 0xa000002}, ip_dst = {s_addr = 0xa0a0101}} -- With Best Regards, Andrew Belashov.
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