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Date: Tue, 22 Jun 2010 14:12:32 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: netdev@...r.kernel.org Cc: bugzilla-daemon@...zilla.kernel.org, bugme-daemon@...zilla.kernel.org, lyw@...fujitsu.com Subject: Re: [Bugme-new] [Bug 16268] New: kernel oops when rmmod the tcp_diag modules (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@...zilla.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@...ux-foundation.org > ReportedBy: lyw@...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 ]--- > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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