On Mon, 3 Dec 2007 16:23:58 +0100
Andi Kleen <[email protected]> wrote:
>
> FYI
>
> Just saw this on a test system of mine running 2.4.24rc3 (+ some suse patches,
> but they're not changing anything near this AFAIK)
>
> -Andi
>
> [101109.104881] ------------[ cut here ]------------
> [101109.114487] kernel BUG at fs/dcache.c:595!
> [101109.123053] invalid opcode: 0000 [1] SMP
> [101109.131492] last sysfs file: /devices/system/cpu/cpu7/cache/index2/shared_cpu_map
> [101109.147023] CPU 0
> [101109.151458] Modules linked in: nfs lockd nfs_acl sunrpc autofs4 iptable_filter ip_tables ip6table_filter ip6_tables x_tables af_packet ipv6 cpufreq_conserv
> ative cpufreq_userspace cpufreq_powersave acpi_cpufreq dm_crypt ext2 ext3 jbd mbcache loop dm_mod iTCO_wdt e1000 container button rtc_cmos rtc_core i2c_i801 sh
> pchp iTCO_vendor_support i2c_core rtc_lib sr_mod pci_hotplug cdrom sg floppy ehci_hcd uhci_hcd sd_mod usbcore edd reiserfs fan aic79xx scsi_transport_spi ata_p
> iix ahci libata scsi_mod thermal processor
> [101109.245056] Pid: 8365, comm: umount.nfs Tainted: G N 2.6.24-rc3-git3-2-default #1
> [101109.261620] RIP: 0010:[<ffffffff802a63b2>] [<ffffffff802a63b2>] shrink_dcache_for_umount_subtree+0x16/0x241
> [101109.281862] RSP: 0018:ffff81019294be18 EFLAGS: 00010202
> [101109.299219] RAX: 0000000000000000 RBX: ffff81009500ad80 RCX: 0000000000000000
> [101109.314048] RDX: 00000000ffffffff RSI: 0000000000000296 RDI: ffff81009500ad80
> [101109.328868] RBP: ffff81003679a970 R08: ffff81007311f510 R09: 0000000000000296
> [101109.343687] R10: ffff81007311f510 R11: 0000000000000400 R12: ffff810225719c00
> [101109.358507] R13: 0000000000000000 R14: 00007f3173a7d3f0 R15: 0000000000000000
> [101109.373332] FS: 00007f31729c56f0(0000) GS:ffffffff8051b000(0000) knlGS:0000000000000000
> [101109.390081] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [101109.401934] CR2: 0000000040d4bebc CR3: 00000001e61e7000 CR4: 00000000000006e0
> [101109.416761] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [101109.431600] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [101109.446432] Process umount.nfs (pid: 8365, threadinfo ffff81019294a000, task ffff8102250f87e0)
> [101109.464203] Stack: 0000000000000296 ffff810225719c00 ffffffff883e9be0 ffff810225719c00
> [101109.480929] 0000000000000000 ffffffff802a660c ffff810225719c00 ffffffff80297d34
> [101109.496407] ffff81007311f480 0000000000000017 ffffffff88401e90 ffffffff80297e33
> [101109.511304] Call Trace:
> [101109.517158] [<ffffffff802a660c>] shrink_dcache_for_umount+0x2f/0x3d
> [101109.530218] [<ffffffff80297d34>] generic_shutdown_super+0x19/0xf1
> [101109.542941] [<ffffffff80297e33>] kill_anon_super+0x9/0x35
> [101109.554281] [<ffffffff883cd1ba>] :nfs:nfs_kill_super+0xd/0x16
> [101109.566301] [<ffffffff80297ee4>] deactivate_super+0x6a/0x83
> [101109.577988] [<ffffffff802ab78f>] sys_umount+0x23c/0x24d
> [101109.588979] [<ffffffff802a5b6e>] d_kill+0x40/0x55
> [101109.598919] [<ffffffff802a70fb>] dput+0x26/0x115
> [101109.608684] [<ffffffff80296fc0>] __fput+0x14a/0x179
> [101109.618987] [<ffffffff802aaab5>] mntput_no_expire+0x1f/0x86
> [101109.630671] [<ffffffff802945ea>] filp_close+0x5a/0x61
> [101109.641307] [<ffffffff8020bfde>] system_call+0x7e/0x83
> [101109.652126]
> [101109.655477]
> [101109.655478] Code: 0f 0b eb fe 48 c7 c7 80 f6 62 80 e8 eb 70 17 00 48 8b 53 40
> [101109.674552] RIP [<ffffffff802a63b2>] shrink_dcache_for_umount_subtree+0x16/0x241
> [101109.690110] RSP <ffff81019294be18>
>
wth? sb->s_root->d_parent != sb->s_root.
Is it repeatable?
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