* [BUG] User process tainting in linux-next tree @ 2014-06-29 18:18 Jeshwanth Kumar N K 2014-06-29 19:12 ` Borislav Petkov 0 siblings, 1 reply; 5+ messages in thread From: Jeshwanth Kumar N K @ 2014-06-29 18:18 UTC (permalink / raw) To: linux-kernel Hello, I have created a bug in bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=79171 , The native built Linux-next kernel is giving tainted Error. Can you please give me a pointer to solve this? Thanks -- Regards Jeshwanth Kumar N K Bangalore, India ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] User process tainting in linux-next tree 2014-06-29 18:18 [BUG] User process tainting in linux-next tree Jeshwanth Kumar N K @ 2014-06-29 19:12 ` Borislav Petkov 2014-06-29 20:28 ` Jeshwanth Kumar N K 0 siblings, 1 reply; 5+ messages in thread From: Borislav Petkov @ 2014-06-29 19:12 UTC (permalink / raw) To: Jeshwanth Kumar N K; +Cc: linux-kernel On Sun, Jun 29, 2014 at 11:48:02PM +0530, Jeshwanth Kumar N K wrote: > Hello, > > I have created a bug in bugzilla > https://bugzilla.kernel.org/show_bug.cgi?id=79171 , The native built > Linux-next kernel is giving tainted Error. Can you please give me a > pointer to solve this? All those dmesg log files you've uploaded are incomplete and truncated from the beginning and we want to see them from the beginning because there is the first warning which is almost always the most important one. For that, boot your kernel with "log_buf_len=10M ignore_loglevel" and then collect full dmesg by doing dmesg > dmesg.log which you can then upload to the bugzilla again. Also, please try a newer linux-next tree or Linus' tree. HTH. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] User process tainting in linux-next tree 2014-06-29 19:12 ` Borislav Petkov @ 2014-06-29 20:28 ` Jeshwanth Kumar N K 2014-06-29 20:42 ` Borislav Petkov 0 siblings, 1 reply; 5+ messages in thread From: Jeshwanth Kumar N K @ 2014-06-29 20:28 UTC (permalink / raw) To: Borislav Petkov; +Cc: linux-kernel Hello Borislav, Yes booted by increase the buffer length, but the ignore_loglevel is running continously for 5 minutes. So I ignored that and ran with log_buf_len=500M ( because 10M also filled) only. When I copied the dmesg, the size was 76M, so I attached only first 1500 lines. Please find in below link. https://bugzilla.kernel.org/show_bug.cgi?id=79171 On Mon, Jun 30, 2014 at 12:42 AM, Borislav Petkov <bp@alien8.de> wrote: > On Sun, Jun 29, 2014 at 11:48:02PM +0530, Jeshwanth Kumar N K wrote: >> Hello, >> >> I have created a bug in bugzilla >> https://bugzilla.kernel.org/show_bug.cgi?id=79171 , The native built >> Linux-next kernel is giving tainted Error. Can you please give me a >> pointer to solve this? > > All those dmesg log files you've uploaded are incomplete and truncated > from the beginning and we want to see them from the beginning because > there is the first warning which is almost always the most important > one. > > For that, boot your kernel with "log_buf_len=10M ignore_loglevel" and > then collect full dmesg by doing > > dmesg > dmesg.log > > which you can then upload to the bugzilla again. > > Also, please try a newer linux-next tree or Linus' tree. > > HTH. > > -- > Regards/Gruss, > Boris. > > Sent from a fat crate under my desk. Formatting is fine. > -- -- Regards Jeshwanth Kumar N K Bangalore, India ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] User process tainting in linux-next tree 2014-06-29 20:28 ` Jeshwanth Kumar N K @ 2014-06-29 20:42 ` Borislav Petkov 2014-06-30 16:31 ` Jeshwanth Kumar N K 0 siblings, 1 reply; 5+ messages in thread From: Borislav Petkov @ 2014-06-29 20:42 UTC (permalink / raw) To: Jeshwanth Kumar N K; +Cc: linux-kernel, linux-mm Hi, first of all, please do not top-post. Here's why: A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? > Yes booted by increase the buffer length, but the ignore_loglevel is > running continously for 5 minutes. Huh, what? I can't parse that sentence above. ignore_loglevel is another kernel cmdline parameter: ignore_loglevel [KNL] Ignore loglevel setting - this will print /all/ kernel messages to the console. Useful for debugging. We also add it as printk module parameter, so users could change it dynamically, usually by /sys/module/printk/parameters/ignore_loglevel. > So I ignored that and ran with > log_buf_len=500M ( because 10M also filled) only. > > When I copied the dmesg, the size was 76M, so I attached only first > 1500 lines. Please find in below link. > > https://bugzilla.kernel.org/show_bug.cgi?id=79171 Ok, that's better. The warnings start spewing pretty early with the one below. Let's CC linux-mm. [ 1.062658] registered taskstats version 1 [ 1.063400] ------------[ cut here ]------------ [ 1.063455] WARNING: CPU: 0 PID: 55 at kernel/res_counter.c:28 res_counter_uncharge_until+0x84/0x110() [ 1.063513] Modules linked in: [ 1.063516] CPU: 0 PID: 55 Comm: modprobe Not tainted 3.16.0-rc1-next-20140620+ #4 [ 1.063518] Hardware name: Dell Inc. Studio 1555/0C234M, BIOS A11 03/29/2010 [ 1.063520] 00000000 00000000 d34d7de4 c1648de3 00000000 d34d7e14 c105b74e c1822e40 [ 1.063524] 00000000 00000037 c183384f 0000001c c10dab24 c10dab24 d3c048c8 ffffffff [ 1.063529] 00000000 d34d7e24 c105b812 00000009 00000000 d34d7e58 c10dab24 00000282 [ 1.063534] Call Trace: [ 1.063538] [<c1648de3>] dump_stack+0x41/0x52 [ 1.063541] [<c105b74e>] warn_slowpath_common+0x7e/0xa0 [ 1.063543] [<c10dab24>] ? res_counter_uncharge_until+0x84/0x110 [ 1.063546] [<c10dab24>] ? res_counter_uncharge_until+0x84/0x110 [ 1.063548] [<c105b812>] warn_slowpath_null+0x22/0x30 [ 1.063551] [<c10dab24>] res_counter_uncharge_until+0x84/0x110 [ 1.063553] [<c10dabc1>] res_counter_uncharge+0x11/0x20 [ 1.063557] [<c117e975>] mem_cgroup_uncharge_end+0x85/0xa0 [ 1.063560] [<c113acb1>] release_pages+0x71/0x1c0 [ 1.063563] [<c1164072>] free_pages_and_swap_cache+0x92/0xb0 [ 1.063567] [<c1151b63>] tlb_flush_mmu_free+0x23/0x40 [ 1.063570] [<c11523cd>] tlb_flush_mmu+0x1d/0x30 [ 1.063572] [<c11523f1>] tlb_finish_mmu+0x11/0x40 [ 1.063575] [<c11588c7>] unmap_region+0x97/0xc0 [ 1.063577] [<c1158c22>] ? vma_rb_erase+0xe2/0x1b0 [ 1.063580] [<c115a8e3>] do_munmap+0x1c3/0x2d0 [ 1.063582] [<c115aa27>] vm_munmap+0x37/0x50 [ 1.063584] [<c115b710>] SyS_munmap+0x20/0x30 [ 1.063588] [<c1650318>] sysenter_do_call+0x12/0x28 [ 1.063590] ---[ end trace 812035dd9a004e6c ]--- -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] User process tainting in linux-next tree 2014-06-29 20:42 ` Borislav Petkov @ 2014-06-30 16:31 ` Jeshwanth Kumar N K 0 siblings, 0 replies; 5+ messages in thread From: Jeshwanth Kumar N K @ 2014-06-30 16:31 UTC (permalink / raw) To: Borislav Petkov; +Cc: linux-kernel, linux-mm On Mon, Jun 30, 2014 at 2:12 AM, Borislav Petkov <bp@alien8.de> wrote: > Hi, > > first of all, please do not top-post. Here's why: > > A: Because it messes up the order in which people normally read text. > Q: Why is top-posting such a bad thing? > A: Top-posting. > Q: What is the most annoying thing in e-mail? Looks bottom posting is better :). Thanks > >> Yes booted by increase the buffer length, but the ignore_loglevel is >> running continously for 5 minutes. > > Huh, what? I can't parse that sentence above. I will explain: 1. I have compiled kernel with LOG level 7. 2. You have mentioned to run with "log_buf_len=10M ignore_loglevel". When I ran, the Error messages started splashing continuously, I waited for 5 mins and tried to switch modes using Ctrl+alt+F1, no use. 3. The one I attached dmesg is only log_buf_len=500M (no ignore_loglevel). > > ignore_loglevel is another kernel cmdline parameter: > > ignore_loglevel [KNL] > Ignore loglevel setting - this will print /all/ > kernel messages to the console. Useful for debugging. > We also add it as printk module parameter, so users > could change it dynamically, usually by > /sys/module/printk/parameters/ignore_loglevel. > > >> So I ignored that and ran with >> log_buf_len=500M ( because 10M also filled) only. >> >> When I copied the dmesg, the size was 76M, so I attached only first >> 1500 lines. Please find in below link. >> >> https://bugzilla.kernel.org/show_bug.cgi?id=79171 > > Ok, that's better. The warnings start spewing pretty early with the one > below. Let's CC linux-mm. > > [ 1.062658] registered taskstats version 1 > [ 1.063400] ------------[ cut here ]------------ > [ 1.063455] WARNING: CPU: 0 PID: 55 at kernel/res_counter.c:28 res_counter_uncharge_until+0x84/0x110() > [ 1.063513] Modules linked in: > [ 1.063516] CPU: 0 PID: 55 Comm: modprobe Not tainted 3.16.0-rc1-next-20140620+ #4 > [ 1.063518] Hardware name: Dell Inc. Studio 1555/0C234M, BIOS A11 03/29/2010 > [ 1.063520] 00000000 00000000 d34d7de4 c1648de3 00000000 d34d7e14 c105b74e c1822e40 > [ 1.063524] 00000000 00000037 c183384f 0000001c c10dab24 c10dab24 d3c048c8 ffffffff > [ 1.063529] 00000000 d34d7e24 c105b812 00000009 00000000 d34d7e58 c10dab24 00000282 > [ 1.063534] Call Trace: > [ 1.063538] [<c1648de3>] dump_stack+0x41/0x52 > [ 1.063541] [<c105b74e>] warn_slowpath_common+0x7e/0xa0 > [ 1.063543] [<c10dab24>] ? res_counter_uncharge_until+0x84/0x110 > [ 1.063546] [<c10dab24>] ? res_counter_uncharge_until+0x84/0x110 > [ 1.063548] [<c105b812>] warn_slowpath_null+0x22/0x30 > [ 1.063551] [<c10dab24>] res_counter_uncharge_until+0x84/0x110 > [ 1.063553] [<c10dabc1>] res_counter_uncharge+0x11/0x20 > [ 1.063557] [<c117e975>] mem_cgroup_uncharge_end+0x85/0xa0 > [ 1.063560] [<c113acb1>] release_pages+0x71/0x1c0 > [ 1.063563] [<c1164072>] free_pages_and_swap_cache+0x92/0xb0 > [ 1.063567] [<c1151b63>] tlb_flush_mmu_free+0x23/0x40 > [ 1.063570] [<c11523cd>] tlb_flush_mmu+0x1d/0x30 > [ 1.063572] [<c11523f1>] tlb_finish_mmu+0x11/0x40 > [ 1.063575] [<c11588c7>] unmap_region+0x97/0xc0 > [ 1.063577] [<c1158c22>] ? vma_rb_erase+0xe2/0x1b0 > [ 1.063580] [<c115a8e3>] do_munmap+0x1c3/0x2d0 > [ 1.063582] [<c115aa27>] vm_munmap+0x37/0x50 > [ 1.063584] [<c115b710>] SyS_munmap+0x20/0x30 > [ 1.063588] [<c1650318>] sysenter_do_call+0x12/0x28 > [ 1.063590] ---[ end trace 812035dd9a004e6c ]--- > > -- > Regards/Gruss, > Boris. > > Sent from a fat crate under my desk. Formatting is fine. > -- -- Regards Jeshwanth Kumar N K Bangalore, India ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-06-30 16:31 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-06-29 18:18 [BUG] User process tainting in linux-next tree Jeshwanth Kumar N K 2014-06-29 19:12 ` Borislav Petkov 2014-06-29 20:28 ` Jeshwanth Kumar N K 2014-06-29 20:42 ` Borislav Petkov 2014-06-30 16:31 ` Jeshwanth Kumar N K
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