From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: NULL pointer dereference in autofs4_expire_wait Date: Thu, 10 Oct 2013 17:22:47 -0600 Message-ID: <525736C7.9080400@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=6QM/3Ch7C9mq9vN5dPD1MMjUaSHDmBvohTXA2aIYCZg=; b=sJ6Uw1lSfFGflLoCWImn3v69oQUPj1iP9oxgSdSlEaSZsQoMrtufETcosg8I/9/O3o /LNx9C00e9SejwXvIHQZpgDnBNTdKjR+vHXibeyKJl9+He9T2fFEfp136JmnUTG4MumW L6BeLeWNj/DKdwEkuusN6VkZnSrOxlp1EAXGrO0XSeae+FSBxS7FRV9+h4TBRc4BPwpt 2KSWGjQ2pbnTQRfJr09ybb6xzPE8+xH9WjKJsNtc/FB8bpugA8X+7iw2Uv35tBoN5mIE 3RVzDe2LSfwsSSu4w9JcBnn1fmXHeVDL6dWLDNgmbin+7S/LhyYoo0xdOr0Xm88VcaG9 AoNQ== Sender: autofs-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: autofs@vger.kernel.org, Ian Kent Running 3.12-rc3 just hit BUG in autofs4_expire_wait [787422.065405] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [787422.065567] IP: [] autofs4_expire_wait+0x38/0x120 [787422.065659] PGD 163bdb067 PUD 163bbc067 PMD 0 [787422.065744] Oops: 0000 [#1] SMP [787422.065825] Modules linked in: binfmt_misc nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache bridge stp llc ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_physdev nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_multiport nfsd lockd nfs_acl auth_rpcgss sunrpc ipmi_si ipmi_msghandler vhost_net iTCO_wdt macvtap macvlan vhost iTCO_vendor_support pcspkr i7core_edac lpc_ich mfd_core tun edac_core bnx2 hpwdt microcode acpi_power_meter oid_registry kvm_intel kvm usb_storage hpsa ttm drm_kms_helper drm i2c_algo_bit i2c_core [787422.066557] CPU: 10 PID: 20498 Comm: sed Not tainted 3.12.0-rc3+ #8 [787422.066640] Hardware name: HP ProLiant DL380 G6, BIOS P62 05/05/2011 [787422.066722] task: ffff88030e941790 ti: ffff880182a16000 task.ti: ffff880182a16000 [787422.066872] RIP: 0010:[] [] autofs4_expire_wait+0x38/0x120 [787422.067029] RSP: 0000:ffff880182a17aa8 EFLAGS: 00010246 [787422.067121] RAX: 00000000b1acb1ac RBX: ffff8802e1056a80 RCX: 0000000000000010 [787422.067270] RDX: 000000000000b1ac RSI: ffffffff81c3e3e0 RDI: ffff88060e187d98 [787422.067457] RBP: ffff880182a17ad8 R08: 0000000000000000 R09: ffffffff811a5748 [787422.067607] R10: ff030306ff030001 R11: ffffffffffffffff R12: ffff88060e187d00 [787422.067758] R13: 0000000000000000 R14: 0000000000637461 R15: ffff8802e1056a80 [787422.067909] FS: 0000000000000000(0000) GS:ffff880313ca0000(0000) knlGS:0000000000000000 [787422.068061] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b [787422.068141] CR2: 0000000000000010 CR3: 000000010f106000 CR4: 00000000000027e0 [787422.068302] Stack: [787422.068414] ffff880182a17af8 ffffffff810768fe 0000000000000100 ffff8802e1056a80 [787422.068575] ffff88060e187dc0 ffff88060e187dc0 ffff880182a17b48 ffffffff8126f5fc [787422.068736] 0000000000000000 ffff880192afb890 ffff8802e1056ab8 0000000392afb890 [787422.068896] Call Trace: [787422.068976] [] ? prepare_to_wait+0x5e/0x90 [787422.069060] [] do_expire_wait+0x17c/0x190 [787422.069142] [] autofs4_d_manage+0xb4/0x170 [787422.069227] [] follow_managed+0xcd/0x2c0 [787422.069323] [] lookup_slow+0x7b/0xaa [787422.069441] [] link_path_walk+0x34a/0x8d0 [787422.069524] [] ? dput+0x31/0x1f0 [787422.069606] [] ? mntput_no_expire+0x49/0x140 [787422.069690] [] ? path_init+0x30c/0x400 [787422.069772] [] path_lookupat+0x58/0x740 [787422.069856] [] ? kmem_cache_alloc+0x1c3/0x200 [787422.069939] [] ? kmem_cache_alloc+0x19d/0x200 [787422.071815] [] filename_lookup+0x34/0xc0 [787422.071898] [] user_path_at_empty+0x59/0xa0 [787422.071981] [] ? do_filp_open+0x43/0xa0 [787422.072064] [] user_path_at+0x11/0x20 [787422.072146] [] vfs_fstatat+0x51/0xb0 [787422.072228] [] vfs_stat+0x1b/0x20 [787422.072311] [] sys32_stat64+0x1a/0x40 [787422.072453] [] ? do_sys_open+0x1aa/0x220 [787422.072539] [] ia32_do_call+0x13/0x13 [787422.072619] Code: 48 89 5d e8 4c 89 65 f0 48 89 fb 4c 89 6d f8 48 8b 47 68 4c 8b 6f 78 4c 8b a0 00 03 00 00 49 8d bc 24 98 00 00 00 e8 78 0d 3c 00 <41> f6 45 10 01 74 61 66 41 83 84 24 98 00 00 00 01 f6 05 52 4a [787422.073004] RIP [] autofs4_expire_wait+0x38/0x120 [787422.073089] RSP [787422.073164] CR2: 0000000000000010 [787422.073595] ---[ end trace c75e278f6383bf9a ]---