* Re: [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules [not found] <bug-16268-10286@https.bugzilla.kernel.org/> @ 2010-06-22 21:12 ` Andrew Morton 2010-06-22 21:21 ` David Miller 2010-06-22 22:02 ` Eric Dumazet 0 siblings, 2 replies; 4+ messages in thread From: Andrew Morton @ 2010-06-22 21:12 UTC (permalink / raw) To: netdev; +Cc: bugzilla-daemon, bugme-daemon, lyw (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 22 Jun 2010 00:43:37 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=16268 > > Summary: kernel oops when rmmod the tcp_diag modules > Product: Networking > Version: 2.5 > Kernel Version: 2.6.35-rc3 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: IPV4 > AssignedTo: shemminger@linux-foundation.org > ReportedBy: lyw@cn.fujitsu.com > Regression: No > > > I found a crash problem use following scripts and steps > > #cat run_ss.sh > while [ 1 ] > do > ss -a > done > > #cat rmmod.sh > while [ 1 ] > do > rmmod -f tcp_diag >/dev/null 2>&1 > rmmod -f inet_diag >/dev/null 2>&1 > done > > step1: > # sh run_sh.sh > step2: > # sh rmmod.sh I assume the rmmod script runs in pararallel with run_ss.sh. What is "ss"? Something which triggers a load of kernel modules, presumably. Which ones? > After step2, the kernel oopsed. yeah, that was a pretty nasty test ;) > ======================================================== > Jun 22 08:44:33 RHEL6Beta kernel: Disabling lock debugging due to kernel taint > Jun 22 08:44:33 RHEL6Beta kernel: BUG: unable to handle kernel NULL pointer > dereference at (null) > Jun 22 08:44:33 RHEL6Beta kernel: IP: [<f982d140>] 0xf982d140 > Jun 22 08:44:33 RHEL6Beta kernel: *pdpt = 0000000033af2001 *pde = > 000000007d9cf067 > Jun 22 08:44:33 RHEL6Beta kernel: Oops: 0002 [#1] SMP > Jun 22 08:44:33 RHEL6Beta kernel: last sysfs file: > /sys/module/inet_diag/initstate > Jun 22 08:44:33 RHEL6Beta kernel: Modules linked in: tcp_diag inet_diag > p4_clockmod ipv6 dm_mirror dm_region_hash dm_log dm_mod snd_intel8x0 > snd_ac97_codec ac97_bus snd_seq snd_mpu401 snd_mpu401_uart snd_pcm snd_rawmidi > snd_seq_device snd_timer snd r8169 8139too ppdev 8139cp soundcore mii > parport_pc floppy sr_mod cdrom parport ns558 gameport sg iTCO_wdt > iTCO_vendor_support snd_page_alloc pcspkr i2c_i801 ext3 jbd mbcache sd_mod > crc_t10dif ata_generic pata_acpi ata_piix i915 drm_kms_helper drm i2c_algo_bit > i2c_core video output [last unloaded: inet_diag] > Jun 22 08:44:33 RHEL6Beta kernel: > Jun 22 08:44:33 RHEL6Beta kernel: Pid: 27392, comm: ss Tainted: G R > 2.6.35-rc3 #1 F61MV/AcerPower S100 > Jun 22 08:44:33 RHEL6Beta kernel: EIP: 0060:[<f982d140>] EFLAGS: 00010282 CPU: > 0 > Jun 22 08:44:33 RHEL6Beta kernel: EIP is at 0xf982d140 > Jun 22 08:44:33 RHEL6Beta kernel: EAX: 00000000 EBX: 00000012 ECX: 00000001 > EDX: 00000000 > Jun 22 08:44:33 RHEL6Beta kernel: ESI: f4217b80 EDI: f4239f00 EBP: f4239f00 > ESP: f3b07bcc > Jun 22 08:44:33 RHEL6Beta kernel: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > Jun 22 08:44:33 RHEL6Beta kernel: Process ss (pid: 27392, ti=f3b06000 > task=f4152a50 task.ti=f3b06000) > Jun 22 08:44:33 RHEL6Beta kernel: Stack: > Jun 22 08:44:33 RHEL6Beta kernel: 00000001 f982e6b0 00000010 00000004 00000012 > f5a74400 f982debb c064256f > Jun 22 08:44:33 RHEL6Beta kernel: <0> 0196b67e 00000014 c09fb3e0 90e7b493 > f3b07c38 f3b07c38 f4217b80 00000344 > Jun 22 08:44:33 RHEL6Beta kernel: <0> f4239f00 00000246 f3b07d80 00000246 > 00021453 000000d0 000000d0 c0746d84 > Jun 22 08:44:33 RHEL6Beta kernel: Call Trace: > Jun 22 08:44:33 RHEL6Beta kernel: [<c064256f>] ? > mix_pool_bytes_extract+0x4f/0x150 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0746d84>] ? __alloc_skb+0x54/0x100 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0746d84>] ? __alloc_skb+0x54/0x100 > Jun 22 08:44:33 RHEL6Beta kernel: [<c074333c>] ? sock_rmalloc+0x4c/0x90 > Jun 22 08:44:33 RHEL6Beta kernel: [<c076d6e3>] ? netlink_dump+0x53/0x1b0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04f529e>] ? > kmem_cache_alloc_notrace+0x9e/0xb0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c076f2e0>] ? netlink_dump_start+0x130/0x1b0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c076f18e>] ? netlink_rcv_skb+0x7e/0xa0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c076eab0>] ? netlink_unicast+0x250/0x280 > Jun 22 08:44:33 RHEL6Beta kernel: [<c076f81c>] ? netlink_sendmsg+0x1bc/0x2a0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0740982>] ? sock_sendmsg+0xd2/0x110 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04374bd>] ? kmap_atomic_prot+0x11d/0x150 > Jun 22 08:44:33 RHEL6Beta kernel: [<c043750c>] ? kmap_atomic+0x1c/0x30 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0437357>] ? kunmap_atomic+0x67/0x80 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04ca242>] ? > get_page_from_freelist+0x242/0x4d0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c05b8fa5>] ? _copy_from_user+0x35/0x120 > Jun 22 08:44:33 RHEL6Beta kernel: [<c05b8fa5>] ? _copy_from_user+0x35/0x120 > Jun 22 08:44:33 RHEL6Beta kernel: [<c07418e3>] ? sys_sendmsg+0x163/0x260 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04f529e>] ? > kmem_cache_alloc_notrace+0x9e/0xb0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c05787ed>] ? > selinux_sk_alloc_security+0x6d/0xe0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04f53ac>] ? kmem_cache_alloc+0xfc/0x120 > Jun 22 08:44:33 RHEL6Beta kernel: [<c074303e>] ? sock_init_data+0xae/0x1d0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c046df2d>] ? creds_are_invalid+0x1d/0x40 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0502ea3>] ? get_empty_filp+0x123/0x1c0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0502fc7>] ? alloc_file+0x87/0xb0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c073f6f6>] ? sock_alloc_file+0xa6/0x120 > Jun 22 08:44:33 RHEL6Beta kernel: [<c04ffeb6>] ? fd_install+0x26/0x50 > Jun 22 08:44:33 RHEL6Beta kernel: [<c073f78b>] ? sock_map_fd+0x1b/0x30 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0741fcd>] ? sys_socketcall+0xed/0x2c0 > Jun 22 08:44:33 RHEL6Beta kernel: [<c0409fdf>] ? sysenter_do_call+0x12/0x28 > Jun 22 08:44:33 RHEL6Beta kernel: Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > Jun 22 08:44:33 RHEL6Beta kernel: EIP: [<f982d140>] 0xf982d140 SS:ESP > 0068:f3b07bcc > Jun 22 08:44:33 RHEL6Beta kernel: CR2: 0000000000000000 > Jun 22 08:44:33 RHEL6Beta kernel: ---[ end trace 443475da32e0e7d3 ]--- > Jun 22 08:44:34 RHEL6Beta kernel: BUG: unable to handle kernel paging request > at 0135b004 > Jun 22 08:44:34 RHEL6Beta kernel: IP: [<c047e34e>] module_put+0x1e/0x90 > Jun 22 08:44:34 RHEL6Beta kernel: *pdpt = 0000000000ab8001 *pde = > 0000000000000000 > Jun 22 08:44:34 RHEL6Beta kernel: Oops: 0002 [#2] SMP > Jun 22 08:44:34 RHEL6Beta kernel: last sysfs file: > /sys/module/inet_diag/initstate > Jun 22 08:44:34 RHEL6Beta kernel: Modules linked in: p4_clockmod ipv6 dm_mirror > dm_region_hash dm_log dm_mod snd_intel8x0 snd_ac97_codec ac97_bus snd_seq > snd_mpu401 snd_mpu401_uart snd_pcm snd_rawmidi snd_seq_device snd_timer snd > r8169 8139too ppdev 8139cp soundcore mii parport_pc floppy sr_mod cdrom parport > ns558 gameport sg iTCO_wdt iTCO_vendor_support snd_page_alloc pcspkr i2c_i801 > ext3 jbd mbcache sd_mod crc_t10dif ata_generic pata_acpi ata_piix i915 > drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: > inet_diag] > Jun 22 08:44:34 RHEL6Beta kernel: > Jun 22 08:44:34 RHEL6Beta kernel: Pid: 27392, comm: ss Tainted: G R D > 2.6.35-rc3 #1 F61MV/AcerPower S100 > Jun 22 08:44:34 RHEL6Beta kernel: EIP: 0060:[<c047e34e>] EFLAGS: 00010286 CPU: > 0 > Jun 22 08:44:34 RHEL6Beta kernel: EIP is at module_put+0x1e/0x90 > Jun 22 08:44:34 RHEL6Beta kernel: EAX: 00000000 EBX: f982e7a0 ECX: f3b07a00 > EDX: 00000001 > Jun 22 08:44:34 RHEL6Beta kernel: ESI: f5486e00 EDI: f4095ee8 EBP: f5486e1c > ESP: f3b079e8 > Jun 22 08:44:34 RHEL6Beta kernel: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > Jun 22 08:44:34 RHEL6Beta kernel: Process ss (pid: 27392, ti=f3b06000 > task=f4152a50 task.ti=f3b06000) > Jun 22 08:44:34 RHEL6Beta kernel: Stack: > Jun 22 08:44:34 RHEL6Beta kernel: f4095e00 f5486e00 f4095ee8 f5486e1c c076e568 > 00000000 c0b641a0 00006b00 > Jun 22 08:44:34 RHEL6Beta kernel: <0> 00000004 f5486e00 00000000 f57c8cf0 > c073f86a 00000000 f5ada600 00000008 > Jun 22 08:44:34 RHEL6Beta kernel: <0> c073f8df f5486e1c c05032ab 00000003 > 00000000 00000000 f7022580 f57c8cf0 > Jun 22 08:44:34 RHEL6Beta kernel: Call Trace: > Jun 22 08:44:34 RHEL6Beta kernel: [<c076e568>] ? netlink_release+0xe8/0x210 > Jun 22 08:44:34 RHEL6Beta kernel: [<c073f86a>] ? sock_release+0x1a/0x80 > Jun 22 08:44:34 RHEL6Beta kernel: [<c073f8df>] ? sock_close+0xf/0x30 > Jun 22 08:44:34 RHEL6Beta kernel: [<c05032ab>] ? fput+0x10b/0x220 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04fff67>] ? filp_close+0x47/0x80 > Jun 22 08:44:34 RHEL6Beta kernel: [<c044efda>] ? put_files_struct+0x5a/0xb0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c044fbdf>] ? do_exit+0x13f/0x750 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0801d45>] ? apic_timer_interrupt+0x31/0x38 > Jun 22 08:44:34 RHEL6Beta kernel: [<c044e531>] ? kmsg_dump+0x71/0x120 > Jun 22 08:44:34 RHEL6Beta kernel: [<c07ff121>] ? printk+0x17/0x1e > Jun 22 08:44:34 RHEL6Beta kernel: [<c0802b5c>] ? oops_end+0x8c/0xd0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0431202>] ? no_context+0xc2/0x190 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04314bf>] ? bad_area+0xf/0x20 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0804d44>] ? do_page_fault+0x3c4/0x3f0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c046341a>] ? __request_module+0x12a/0x1c0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0804980>] ? do_page_fault+0x0/0x3f0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0801fb7>] ? error_code+0x73/0x78 > Jun 22 08:44:34 RHEL6Beta kernel: [<c064256f>] ? > mix_pool_bytes_extract+0x4f/0x150 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0746d84>] ? __alloc_skb+0x54/0x100 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0746d84>] ? __alloc_skb+0x54/0x100 > Jun 22 08:44:34 RHEL6Beta kernel: [<c074333c>] ? sock_rmalloc+0x4c/0x90 > Jun 22 08:44:34 RHEL6Beta kernel: [<c076d6e3>] ? netlink_dump+0x53/0x1b0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04f529e>] ? > kmem_cache_alloc_notrace+0x9e/0xb0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c076f2e0>] ? netlink_dump_start+0x130/0x1b0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c076f18e>] ? netlink_rcv_skb+0x7e/0xa0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c076eab0>] ? netlink_unicast+0x250/0x280 > Jun 22 08:44:34 RHEL6Beta kernel: [<c076f81c>] ? netlink_sendmsg+0x1bc/0x2a0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0740982>] ? sock_sendmsg+0xd2/0x110 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04374bd>] ? kmap_atomic_prot+0x11d/0x150 > Jun 22 08:44:34 RHEL6Beta kernel: [<c043750c>] ? kmap_atomic+0x1c/0x30 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0437357>] ? kunmap_atomic+0x67/0x80 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04ca242>] ? > get_page_from_freelist+0x242/0x4d0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c05b8fa5>] ? _copy_from_user+0x35/0x120 > Jun 22 08:44:34 RHEL6Beta kernel: [<c05b8fa5>] ? _copy_from_user+0x35/0x120 > Jun 22 08:44:34 RHEL6Beta kernel: [<c07418e3>] ? sys_sendmsg+0x163/0x260 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04f529e>] ? > kmem_cache_alloc_notrace+0x9e/0xb0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c05787ed>] ? > selinux_sk_alloc_security+0x6d/0xe0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04f53ac>] ? kmem_cache_alloc+0xfc/0x120 > Jun 22 08:44:34 RHEL6Beta kernel: [<c074303e>] ? sock_init_data+0xae/0x1d0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c046df2d>] ? creds_are_invalid+0x1d/0x40 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0502ea3>] ? get_empty_filp+0x123/0x1c0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0502fc7>] ? alloc_file+0x87/0xb0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c073f6f6>] ? sock_alloc_file+0xa6/0x120 > Jun 22 08:44:34 RHEL6Beta kernel: [<c04ffeb6>] ? fd_install+0x26/0x50 > Jun 22 08:44:34 RHEL6Beta kernel: [<c073f78b>] ? sock_map_fd+0x1b/0x30 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0741fcd>] ? sys_socketcall+0xed/0x2c0 > Jun 22 08:44:34 RHEL6Beta kernel: [<c0409fdf>] ? sysenter_do_call+0x12/0x28 > Jun 22 08:44:34 RHEL6Beta kernel: Code: e8 b8 f5 13 00 31 c0 c3 90 8d 74 26 00 > 83 ec 10 85 c0 89 1c 24 89 c3 89 74 24 04 89 7c 24 08 89 6c 24 0c 74 1d 8b 80 > 60 01 00 00 <64> ff 40 04 8b 3d e4 4b a1 c0 8b 74 24 10 85 ff 75 18 83 3b 02 > Jun 22 08:44:34 RHEL6Beta kernel: EIP: [<c047e34e>] module_put+0x1e/0x90 SS:ESP > 0068:f3b079e8 > Jun 22 08:44:34 RHEL6Beta kernel: CR2: 000000000135b004 > Jun 22 08:44:34 RHEL6Beta kernel: ---[ end trace 443475da32e0e7d4 ]--- > ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules 2010-06-22 21:12 ` [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules Andrew Morton @ 2010-06-22 21:21 ` David Miller 2010-06-22 22:02 ` Eric Dumazet 1 sibling, 0 replies; 4+ messages in thread From: David Miller @ 2010-06-22 21:21 UTC (permalink / raw) To: akpm; +Cc: netdev, bugzilla-daemon, bugme-daemon, lyw From: Andrew Morton <akpm@linux-foundation.org> Date: Tue, 22 Jun 2010 14:12:32 -0700 > What is "ss"? Something which triggers a load of kernel modules, > presumably. Which ones? 'ss' is the tool which dumps sockets using netlink ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules 2010-06-22 21:12 ` [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules Andrew Morton 2010-06-22 21:21 ` David Miller @ 2010-06-22 22:02 ` Eric Dumazet 2010-06-22 22:25 ` Andrew Morton 1 sibling, 1 reply; 4+ messages in thread From: Eric Dumazet @ 2010-06-22 22:02 UTC (permalink / raw) To: Andrew Morton; +Cc: netdev, bugzilla-daemon, bugme-daemon, lyw Le mardi 22 juin 2010 à 14:12 -0700, Andrew Morton a écrit : > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > On Tue, 22 Jun 2010 00:43:37 GMT > bugzilla-daemon@bugzilla.kernel.org wrote: > > > https://bugzilla.kernel.org/show_bug.cgi?id=16268 > > > > Summary: kernel oops when rmmod the tcp_diag modules > > Product: Networking > > Version: 2.5 > > Kernel Version: 2.6.35-rc3 > > Platform: All > > OS/Version: Linux > > Tree: Mainline > > Status: NEW > > Severity: high > > Priority: P1 > > Component: IPV4 > > AssignedTo: shemminger@linux-foundation.org > > ReportedBy: lyw@cn.fujitsu.com > > Regression: No > > > > > > I found a crash problem use following scripts and steps > > > > #cat run_ss.sh > > while [ 1 ] > > do > > ss -a > > done > > > > #cat rmmod.sh > > while [ 1 ] > > do > > rmmod -f tcp_diag >/dev/null 2>&1 > > rmmod -f inet_diag >/dev/null 2>&1 > > done > > > > step1: > > # sh run_sh.sh > > step2: > > # sh rmmod.sh > > I assume the rmmod script runs in pararallel with run_ss.sh. > > What is "ss"? Something which triggers a load of kernel modules, > presumably. Which ones? > ss is kind of "netstat" with advanced features. It loads inet_diag & tcp_diag modules. > > After step2, the kernel oopsed. > > yeah, that was a pretty nasty test ;) Well, they are faster and more predictable ways to reboot a machine, if you ask me :) man rmmod -f --force This option can be extremely dangerous: it has no effect unless CONFIG_MODULE_FORCE_UNLOAD was set when the kernel was compiled. With this option, you can remove modules which are being used, or which are not designed to be removed, or have been marked as unsafe (see lsmod(8)). I guess Linux is supposed to respect admin choice to live in a dangerous world. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules 2010-06-22 22:02 ` Eric Dumazet @ 2010-06-22 22:25 ` Andrew Morton 0 siblings, 0 replies; 4+ messages in thread From: Andrew Morton @ 2010-06-22 22:25 UTC (permalink / raw) To: Eric Dumazet; +Cc: netdev, bugzilla-daemon, bugme-daemon, lyw On Wed, 23 Jun 2010 00:02:42 +0200 Eric Dumazet <eric.dumazet@gmail.com> wrote: > ss is kind of "netstat" with advanced features. Someone call the namespace police! > Well, they are faster and more predictable ways to reboot a machine, if > you ask me :) > > man rmmod > > -f --force doh, I missed that. Yes, that was a bit self-inflicted. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-06-22 22:26 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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[not found] <bug-16268-10286@https.bugzilla.kernel.org/>
2010-06-22 21:12 ` [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules Andrew Morton
2010-06-22 21:21 ` David Miller
2010-06-22 22:02 ` Eric Dumazet
2010-06-22 22:25 ` Andrew Morton
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