From: Filipe Manana <fdmanana@xxxxxxxx> While writing a test case for overlayfs I noticed that _check_dmesg() did not detect general protection fault traces like the following: [15277.026108] run fstests overlay/002 at 2016-03-21 18:42:27 [15277.933179] general protection fault: 0000 [#11] PREEMPT SMP DEBUG_PAGEALLOC [15277.935427] Modules linked in: btrfs overlay ppdev crc32c_generic evdev xor raid6_pq psmouse pcspkr sg serio_raw acpi_cpufreq parport_pc parport tpm_tis i2c_piix4 [15277.936011] CPU: 15 PID: 22762 Comm: xfs_io Tainted: G D 4.5.0-rc6-btrfs-next-26+ #1 [15277.936011] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS by qemu-project.org 04/01/2014 [15277.936011] task: ffff88001f6f1340 ti: ffff88000a3f8000 task.ti: ffff88000a3f8000 [15277.936011] RIP: 0010:[<ffffffffa030b7ab>] [<ffffffffa030b7ab>] btrfs_sync_file+0x11b/0x3e9 [btrfs] [15277.936011] RSP: 0018:ffff88000a3fbe40 EFLAGS: 00010286 [15277.936011] RAX: 0000000080000000 RBX: ffff8800b0152c88 RCX: 0000000000000001 [15277.936011] RDX: 0000000000000001 RSI: ffffffff8148fec0 RDI: 00000000ffffffff [15277.936011] RBP: ffff88000a3fbec0 R08: 0000000000000001 R09: 0000000000000000 [15277.936011] R10: ffff88000a3fbe40 R11: 0000000000000246 R12: 6e756f635f657269 [15277.936011] R13: 0000000000000000 R14: 00000000014655a0 R15: ffff88017dd25e40 [15277.936011] FS: 00007f27f0e1f700(0000) GS:ffff88023ede0000(0000) knlGS:0000000000000000 [15277.936011] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [15277.936011] CR2: 00007f27f0e2f000 CR3: 000000013aadf000 CR4: 00000000000006e0 [15277.936011] Stack: [15277.936011] ffffffff8108b5cc ffff88000a3fbec0 0000000000000246 ffff880125abaed0 [15277.936011] ffff8800b0152d60 8000000000000000 7fffffffffffffff 0000000000000246 [15277.936011] 0000000000000246 ffffffff81074f9b ffffffff8104357c ffff88017dd25e40 [15277.936011] Call Trace: [15277.936011] [<ffffffff8108b5cc>] ? arch_local_irq_save+0x9/0xc [15277.936011] [<ffffffff81074f9b>] ? ___might_sleep+0xce/0x217 [15277.936011] [<ffffffff8104357c>] ? __do_page_fault+0x3c0/0x43a [15277.936011] [<ffffffff811a2351>] vfs_fsync_range+0x8c/0x9e [15277.936011] [<ffffffff811a237f>] vfs_fsync+0x1c/0x1e [15277.936011] [<ffffffff811a24d6>] do_fsync+0x31/0x4a [15277.936011] [<ffffffff811a2700>] SyS_fsync+0x10/0x14 [15277.936011] [<ffffffff81493617>] entry_SYSCALL_64_fastpath+0x12/0x6b [15277.936011] Code: 85 c0 0f 85 e2 02 00 00 48 8b 45 b0 31 f6 4c 29 e8 48 ff c0 48 89 45 a8 48 8d 83 d8 00 00 00 48 89 c7 48 89 45 a0 e8 fc 43 18 e1 <f0> 41 ff 84 24 [15277.936011] RIP [<ffffffffa030b7ab>] btrfs_sync_file+0x11b/0x3e9 [btrfs] [15277.936011] RSP <ffff88000a3fbe40> [15277.974598] ---[ end trace 721e14960eb939c1 ]--- So teach it to look out for such traces. Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx> --- common/rc | 1 + 1 file changed, 1 insertion(+) diff --git a/common/rc b/common/rc index 16f5a43..51d9753 100644 --- a/common/rc +++ b/common/rc @@ -3420,6 +3420,7 @@ _check_dmesg() -e "Internal error" \ -e "INFO: suspicious RCU usage" \ -e "INFO: possible circular locking dependency detected" \ + -e "general protection fault:" \ $seqres.dmesg if [ $? -eq 0 ]; then echo "_check_dmesg: something found in dmesg (see $seqres.dmesg)" -- 2.7.0.rc3 -- To unsubscribe from this list: send the line "unsubscribe fstests" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
