* Re: Fwd: Patch - SCSI host numbers - please apply [not found] ` <200206181514.52827.nahshon@actcom.co.il> @ 2002-06-18 21:18 ` Luben Tuikov 2002-06-19 0:03 ` Itai Nahshon 0 siblings, 1 reply; 3+ messages in thread From: Luben Tuikov @ 2002-06-18 21:18 UTC (permalink / raw) To: nahshon, Marcelo Tosatti, linux-scsi [-- Attachment #1: Type: text/plain, Size: 2841 bytes --] Itai, After applying your patch to 2.4.18, I see the following problems: 1. ide-scsi does NOT work. /proc/scsi/scsi shows NO devices and /proc/scsi/ide-scsi is empty. 2. /proc/scsi/{scsi, ide-scsi, scsi_test} are all empty! 3. After ``rmmod scsi_test'' and ``ls /proc/scsi'' the kernel OOPS-es. NONE of those problems exist with a non-patched kernel. I used kernel 2.4.18, but doubt there'd difference for 2.5.x since the host_no stuff hasn't changed (2.5.22). I've attached the OOPS and the tgz of my testing module scsi_test.o. Interested parties: this is in regards to the scsi subsystem assigning _repeating_ host numbers to hosts registered! See my message ``/proc/scsi/driver/hosts with same numeric???'' dated 2002/05/29 on linux-scsi ML. To repeat the problem: $ insmod scsi_reg.o $ rmmod scsi_reg $ insmod scsi_req.o MaxHosts=20 $ ls /proc/scsi/scsi_test Voila! Here is the OOPS: ---------------------------- Jun 18 16:49:23 canoe kernel: Unable to handle kernel paging request at virtual address e5a59010 Jun 18 16:49:23 canoe kernel: printing eip: Jun 18 16:49:23 canoe kernel: c0150c68 Jun 18 16:49:23 canoe kernel: *pde = 1d58c067 Jun 18 16:49:23 canoe kernel: *pte = 00000000 Jun 18 16:49:23 canoe kernel: Oops: 0002 Jun 18 16:49:23 canoe kernel: CPU: 0 Jun 18 16:49:23 canoe kernel: EIP: 0010:[proc_get_inode+152/256] Not tainted Jun 18 16:49:23 canoe kernel: EIP: 0010:[<c0150c68>] Not tainted Jun 18 16:49:23 canoe kernel: EFLAGS: 00010286 Jun 18 16:49:23 canoe kernel: eax: e5a59000 ebx: dc921880 ecx: 00000001 edx: 00000003 Jun 18 16:49:23 canoe kernel: esi: dc337c80 edi: dc9218d5 ebp: dc06e600 esp: dc31de4c Jun 18 16:49:23 canoe kernel: ds: 0018 es: 0018 ss: 0018 Jun 18 16:49:23 canoe kernel: Process ls (pid: 1151, stackpage=dc31d000) Jun 18 16:49:23 canoe kernel: Stack: dff83800 dc06e665 c0152721 dff83800 000011bb dc921880 ffffffea 00000000 Jun 18 16:49:23 canoe kernel: dc62f400 c0145569 c1787100 000001f0 dc06e600 fffffff4 dc660580 dc62f400 Jun 18 16:49:23 canoe kernel: c013cc33 dc660580 dc06e600 dc31df64 00000000 dc660580 dc31df9c c013d3ec Jun 18 16:49:23 canoe kernel: Call Trace: [proc_lookup+161/176] [d_alloc+25/368] [real_lookup+163/208] [link_path_walk+1708/2000] [filldir64+239/352] Jun 18 16:49:23 canoe kernel: Call Trace: [<c0152721>] [<c0145569>] [<c013cc33>] [<c013d3ec>] [<c014132f>] Jun 18 16:49:23 canoe kernel: [do_page_fault+764/1239] [getname+109/176] [__user_walk+58/80] [sys_lstat64+20/112] [error_code+52/60] [system_call+51/56] Jun 18 16:49:23 canoe kernel: [<c011431c>] [<c013c90d>] [<c013d8ca>] [<c013a804>] [<c010705c>] [<c0106f6b>] Jun 18 16:49:23 canoe kernel: Jun 18 16:49:23 canoe kernel: Code: ff 40 10 8b 43 24 83 48 14 18 8b 43 18 85 c0 74 06 89 86 88 ------------------------------------ -- Luben [-- Attachment #2: scsi_reg.tar.gz --] [-- Type: application/x-gzip, Size: 1480 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Fwd: Patch - SCSI host numbers - please apply 2002-06-18 21:18 ` Fwd: Patch - SCSI host numbers - please apply Luben Tuikov @ 2002-06-19 0:03 ` Itai Nahshon 2002-06-19 16:26 ` Luben Tuikov 0 siblings, 1 reply; 3+ messages in thread From: Itai Nahshon @ 2002-06-19 0:03 UTC (permalink / raw) To: Luben Tuikov, Marcelo Tosatti, linux-scsi On Wednesday 19 June 2002 00:18 am, Luben Tuikov wrote: > Itai, > > > After applying your patch to 2.4.18, I see the following > problems: Well, I just tried that with 2.4.18-pre10 + my patch and I do not see any of the problems that you described. I suspect there is something wrong with your configuration or with the way that you run your tests. I first loaded ide-scsi (which got host_no 0) and then the object that I got from compiling yout code with MaxHosts=30 (and it got host_nos 1 .. 30). Removng the modules worked OK too. The hosts were unregistered and off course, no oops. Then reloaded scsi_reg.o with MaxHosts=100. Again no problem. My configuration: RedHat 7.2, non-SMP. All the updates from RedHat applied +KDE-3.0. Relevant RPMS: gcc-2.96-98 cpp-2.96-98 binutils-2.11.90.0.8-11 modutils-2.4.13-0.7.1 The kernel source tree is symbolic linked to /usr/src/linux . Your code extracted to /usr/src/scsi_reg/ . -- Itai ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Fwd: Patch - SCSI host numbers - please apply 2002-06-19 0:03 ` Itai Nahshon @ 2002-06-19 16:26 ` Luben Tuikov 0 siblings, 0 replies; 3+ messages in thread From: Luben Tuikov @ 2002-06-19 16:26 UTC (permalink / raw) To: nahshon; +Cc: Marcelo Tosatti, linux-scsi Itai Nahshon wrote: > I suspect there > is something wrong with your configuration or with the > way that you run your tests. What could be wrong with my configuration? Anything specific that you have in mind? What do you mean ``they way you run your tests''? Could you please elaborate... The second time you loaded the module did you get 1 to 100 or 31 to 131? > My configuration: > RedHat 7.2, non-SMP. All the updates from RedHat applied +KDE-3.0. > Relevant RPMS: > gcc-2.96-98 > cpp-2.96-98 > binutils-2.11.90.0.8-11 > modutils-2.4.13-0.7.1 My configuration is as follows (RH7.1): - kernel: 2.4.18 - gcc 3.0.4 Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.0.4/specs Configured with: ../gcc-3.0.4/configure --host=i686-pc-linux-gnu --with-gnu-as --with-gnu-ld --disable-win32-registry --enable-threads=posix Thread model: posix gcc version 3.0.4 - GNU ld version 2.10.91 (with BFD 2.10.91.0.2) - modinfo (Linux modutils) 2.4.2 This is very strange, maybe we should get someone else to independently test this? (scsi_reg.o with and without your patch on a 2.4.18.) Anyone? -- Luben ^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-06-18 21:18 ` Fwd: Patch - SCSI host numbers - please apply Luben Tuikov
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2002-06-19 16:26 ` Luben Tuikov
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