On 2014-10-30 08:33, Lukáš Czerner wrote:
Hi, I've just hit this BUG at drivers/block/virtio_blk.c when updated to the kernel from the top of the Linus git tree. commit a7ca10f263d7e673c74d8e0946d6b9993405cc9c This is my virtual machine running on RHEL7 guest qemu-kvm-1.5.3-60.el7.x86_64 The last upstream kernel (3.17.0-rc4) worked well. I'll try to bisect, but meanwhile this is a backtrace I got very early in the boot. The root fs on that guest is xfs and I am using raw disk image and virtio driver. Let me know if you need more information.
Ming, looks like this still isn't really fixed. The above upstream commit has the latest fixup as well for the segments being wrong, so nothing else should be pending.
Leaving trace below.
[ 2.806242] ------------[ cut here ]------------ [ 2.807018] kernel BUG at drivers/block/virtio_blk.c:172! [ 2.807018] invalid opcode: 0000 [#1] SMP [ 2.807018] Modules linked in: xfs libcrc32c sd_mod qxl ata_generic pata_acpi drm_kms_helper ttm drm ata_piix virtio_net virtio_blk libata virtio_pci floppy virtio_ring i2c_core virtio dm_mirror dm_region_hash dm_log dm_mod [ 2.807018] CPU: 2 PID: 580 Comm: mount Not tainted 3.18.0-rc2+ #4 [ 2.807018] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011 [ 2.807018] task: ffff880035e3b640 ti: ffff880034d24000 task.ti: ffff880034d24000 [ 2.807018] RIP: 0010:[<ffffffffa0034737>] [<ffffffffa0034737>] virtio_queue_rq+0x277/0x280 [virtio_blk] [ 2.807018] RSP: 0018:ffff880034d277b8 EFLAGS: 00010202 [ 2.807018] RAX: 0000000000000082 RBX: ffff88022f2f0000 RCX: dead000000200200 [ 2.807018] RDX: 0000000000000001 RSI: ffff88022f2f0000 RDI: ffff88022f2e3400 [ 2.807018] RBP: ffff880034d277f8 R08: ffff88022f2f0000 R09: ffff880034d27820 [ 2.807018] R10: 0000000000000000 R11: 0000000000001000 R12: ffff880034d27820 [ 2.807018] R13: ffff88022f2e3400 R14: ffff880035dca480 R15: 0000000000000000 [ 2.807018] FS: 00007f23686e0880(0000) GS:ffff880237240000(0000) knlGS:0000000000000000 [ 2.807018] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.807018] CR2: 00007f8c71668000 CR3: 0000000035d8e000 CR4: 00000000000006e0 [ 2.807018] Stack: [ 2.807018] ffff880000000001 ffff88022f2f0170 0000000000000000 ffff88022f2e3400 [ 2.807018] ffff880034d27820 0000000000000000 ffff88022f2f0000 ffff88022f2e3408 [ 2.807018] ffff880034d27868 ffffffff812e0628 ffff88022e8c0000 0000000000000003 [ 2.807018] Call Trace: [ 2.807018] [<ffffffff812e0628>] __blk_mq_run_hw_queue+0x1c8/0x330 [ 2.807018] [<ffffffff812d233f>] ? part_round_stats+0x4f/0x60 [ 2.807018] [<ffffffff812e0da0>] blk_mq_run_hw_queue+0x70/0xa0 [ 2.807018] [<ffffffff812e1e68>] blk_sq_make_request+0x258/0x380 [ 2.807018] [<ffffffff812d32e0>] generic_make_request+0xe0/0x130 [ 2.807018] [<ffffffff812d33a8>] submit_bio+0x78/0x160 [ 2.807018] [<ffffffffa01c3516>] _xfs_buf_ioapply+0x2e6/0x430 [xfs] [ 2.807018] [<ffffffffa01eacd8>] ? xlog_bread_noalign+0xa8/0xe0 [xfs] [ 2.807018] [<ffffffffa01c5081>] xfs_buf_submit_wait+0x61/0x1d0 [xfs] [ 2.807018] [<ffffffffa01eacd8>] xlog_bread_noalign+0xa8/0xe0 [xfs] [ 2.807018] [<ffffffffa01eb6e7>] xlog_bread+0x27/0x60 [xfs] [ 2.807018] [<ffffffffa01efd01>] xlog_find_verify_cycle+0xf1/0x1b0 [xfs] [ 2.807018] [<ffffffffa01f02d1>] xlog_find_head+0x2f1/0x3e0 [xfs] [ 2.807018] [<ffffffffa01f03fc>] xlog_find_tail+0x3c/0x410 [xfs] [ 2.807018] [<ffffffffa01f07fd>] xlog_recover+0x2d/0x130 [xfs] [ 2.807018] [<ffffffffa01f199f>] ? xfs_trans_ail_init+0xaf/0xe0 [xfs] [ 2.807018] [<ffffffffa01e444a>] xfs_log_mount+0xea/0x2c0 [xfs] [ 2.807018] [<ffffffffa01dbbfc>] xfs_mountfs+0x46c/0x7a0 [xfs] [ 2.807018] [<ffffffffa01df10a>] xfs_fs_fill_super+0x2ba/0x330 [xfs] [ 2.807018] [<ffffffff811ee510>] mount_bdev+0x1b0/0x1f0 [ 2.807018] [<ffffffffa01dee50>] ? xfs_parseargs+0xbf0/0xbf0 [xfs] [ 2.807018] [<ffffffffa01dd085>] xfs_fs_mount+0x15/0x20 [xfs] [ 2.807018] [<ffffffff811eee89>] mount_fs+0x39/0x1b0 [ 2.807018] [<ffffffff81194505>] ? __alloc_percpu+0x15/0x20 [ 2.807018] [<ffffffff8120ab2b>] vfs_kern_mount+0x6b/0x110 [ 2.807018] [<ffffffff8120d91c>] do_mount+0x22c/0xb30 [ 2.807018] [<ffffffff8118f2b6>] ? memdup_user+0x46/0x80 [ 2.807018] [<ffffffff8120e562>] SyS_mount+0xa2/0x110 [ 2.807018] [<ffffffff81671269>] system_call_fastpath+0x12/0x17 [ 2.807018] Code: fe ff ff 90 0f b7 86 f4 00 00 00 c7 86 78 01 00 00 02 00 00 00 48 c7 86 80 01 00 00 00 00 00 00 89 86 7c 01 00 00 e9 12 fe ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 31 f6 b9 08 00 00 [ 2.807018] RIP [<ffffffffa0034737>] virtio_queue_rq+0x277/0x280 [virtio_blk] [ 2.807018] RSP <ffff880034d277b8> [ 2.887706] ---[ end trace e667b0f035973c7a ]--- [ 2.888781] Kernel panic - not syncing: Fatal exception [ 2.889765] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
-- Jens Axboe _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
