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[Xen-devel] xen boot PVH guest with linux 5.6.0-rc4-ish kernel: general protection fault, RIP: 0010:__pv_queued_spin_lock_slowpath

To: Juergen Gross <jgross@xxxxxxxx>

From: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>

Date: Wed, 4 Mar 2020 18:52:37 +0100

Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>

Delivery-date: Wed, 04 Mar 2020 17:53:01 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi Juergen, Just tested a 5.6.0-rc4'ish kernel (8b614cb8f1dcac8ca77cf4dd85f46ef3055f8238, so it includes the xen fixes from x86 trees). Xen is the latest xen-unstable, dom0 kernel is 5.5.7. During boot of the PVH guest I got the splat below. With a 5.5.7 kernel the guest boots fine. -- Sander [ 1.921031] general protection fault, probably for non-canonical address 0x344a3feab7bf8: 0000 [#1] SMP NOPTI [ 1.921090] CPU: 1 PID: 1686 Comm: systemd-udevd Tainted: G W 5.6.0-rc4-20200304-doflr-mac80211debug+ #1 [ 1.921134] RIP: 0010:__pv_queued_spin_lock_slowpath+0x195/0x2a0 [ 1.921160] Code: c4 c1 ea 12 4c 8d 6d 14 41 be 01 00 00 00 41 83 e4 03 8d 42 ff 49 c1 e4 05 48 98 49 81 c4 80 c3 02 00 4c 03 24 c5 20 89 b7 82 <49> 89 2c 24 b8 00 80 00 00 eb 15 84 c0 75 0a 41 0f b6 54 24 14 84 [ 1.921229] RSP: 0018:ffffc90000213958 EFLAGS: 00010002 [ 1.921249] RAX: 000000000000327f RBX: ffff888005ce00e0 RCX: 0000000000000001 [ 1.921278] RDX: 0000000000003280 RSI: 0000000000000000 RDI: 0000000000000000 [ 1.921307] RBP: ffff88801f52c380 R08: 00000000fffea95e R09: ffff8880192d0c80 [ 1.921335] R10: ffff8880192d0cb8 R11: ffffc90000213b01 R12: 000344a3feab7bf8 [ 1.921365] R13: ffff88801f52c394 R14: 0000000000000001 R15: 0000000000080000 [ 1.921402] FS: 00007f771d762d40(0000) GS:ffff88801f500000(0000) knlGS:0000000000000000 [ 1.921438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.921461] CR2: 00007fffaae16ec8 CR3: 0000000004b04000 CR4: 00000000000006e0 [ 1.921608] Call Trace: [ 1.921628] ? ktime_get+0x31/0x90 [ 1.921646] _raw_spin_lock_irqsave+0x2b/0x30 [ 1.921669] blkif_queue_rq+0x6e/0x7c0 [ 1.921685] ? wait_woken+0x80/0x80 [ 1.921701] ? xen_clocksource_get_cycles+0x11/0x20 [ 1.921720] ? ktime_get+0x31/0x90 [ 1.921737] ? blk_mq_get_request+0x195/0x3b0 [ 1.921757] ? blk_account_io_start+0xd4/0x150 [ 1.921776] __blk_mq_try_issue_directly+0x10e/0x1c0 [ 1.921798] blk_mq_request_issue_directly+0x43/0xe0 [ 1.921819] blk_mq_try_issue_list_directly+0x3c/0xb0 [ 1.921840] blk_mq_sched_insert_requests+0xa0/0xf0 [ 1.921860] blk_mq_flush_plug_list+0x122/0x1e0 [ 1.921879] blk_flush_plug_list+0xc1/0xf0 [ 1.921897] blk_finish_plug+0x1c/0x29 [ 1.921914] read_pages+0x7a/0x140 [ 1.921931] __do_page_cache_readahead+0x188/0x1a0 [ 1.921952] force_page_cache_readahead+0x8b/0xf0 [ 1.921972] generic_file_read_iter+0x7e1/0xae0 [ 1.921993] ? mem_cgroup_throttle_swaprate+0x1f/0x145 [ 1.922014] ? _copy_to_user+0x26/0x30 [ 1.922031] ? cp_new_stat+0x127/0x160 [ 1.922048] new_sync_read+0x10f/0x1a0 [ 1.922064] vfs_read+0x8c/0x140 [ 1.922081] ksys_read+0x54/0xd0 [ 1.922098] do_syscall_64+0x49/0x130 [ 1.922114] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1.922138] RIP: 0033:0x7f771df43461 [ 1.922154] Code: fe ff ff 50 48 8d 3d fe d0 09 00 e8 e9 03 02 00 66 0f 1f 84 00 00 00 00 00 48 8d 05 99 62 0d 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 41 54 49 89 d4 55 48 [ 1.922225] RSP: 002b:00007fffaae1a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 1.922255] RAX: ffffffffffffffda RBX: 000055d4cca138f0 RCX: 00007f771df43461 [ 1.922284] RDX: 0000000000000040 RSI: 000055d4cca164f8 RDI: 000000000000000c [ 1.922313] RBP: 000055d4cca13940 R08: 000055d4cca164d0 R09: 0000000000000005 [ 1.922342] R10: 000055d4cc9fe010 R11: 0000000000000246 R12: 000000013fff0000 [ 1.922370] R13: 0000000000000040 R14: 000055d4cca164e8 R15: 000055d4cca164d0 [ 1.922398] Modules linked in: [ 1.922415] ---[ end trace baa27c3655b1ea59 ]--- [ 1.922435] RIP: 0010:__pv_queued_spin_lock_slowpath+0x195/0x2a0 [ 1.922459] Code: c4 c1 ea 12 4c 8d 6d 14 41 be 01 00 00 00 41 83 e4 03 8d 42 ff 49 c1 e4 05 48 98 49 81 c4 80 c3 02 00 4c 03 24 c5 20 89 b7 82 <49> 89 2c 24 b8 00 80 00 00 eb 15 84 c0 75 0a 41 0f b6 54 24 14 84 [ 1.922526] RSP: 0018:ffffc90000213958 EFLAGS: 00010002 [ 1.922545] RAX: 000000000000327f RBX: ffff888005ce00e0 RCX: 0000000000000001 [ 1.922574] RDX: 0000000000003280 RSI: 0000000000000000 RDI: 0000000000000000 [ 1.924268] RBP: ffff88801f52c380 R08: 00000000fffea95e R09: ffff8880192d0c80 [ 1.924302] R10: ffff8880192d0cb8 R11: ffffc90000213b01 R12: 000344a3feab7bf8 [ 1.924333] R13: ffff88801f52c394 R14: 0000000000000001 R15: 0000000000080000 [ 1.924377] FS: 00007f771d762d40(0000) GS:ffff88801f500000(0000) knlGS:0000000000000000 [ 1.924409] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.924434] CR2: 00007fffaae16ec8 CR3: 0000000004b04000 CR4: 00000000000006e0 [ 1.924967] BUG: unable to handle page fault for address: 000000000013fff8 [ 1.924999] #PF: supervisor write access in kernel mode [ 1.925020] #PF: error_code(0x0002) - not-present page [ 1.925042] PGD 0 P4D 0 [ 1.925056] Oops: 0002 [#2] SMP NOPTI [ 1.925073] CPU: 1 PID: 1686 Comm: systemd-udevd Tainted: G D W 5.6.0-rc4-20200304-doflr-mac80211debug+ #1 [ 1.925128] RIP: 0010:blk_flush_plug_list+0x67/0xf0 [ 1.925149] Code: 48 89 e5 48 89 2c 24 48 89 6c 24 08 48 8b 43 10 49 39 c4 74 5c 48 8b 43 10 49 39 c4 74 23 48 8b 4b 10 48 8b 53 18 48 8b 04 24 <48> 89 69 08 48 89 0c 24 48 89 02 48 89 50 08 4c 89 63 10 4c 89 63 [ 2.013559] RSP: 0018:ffffc90000213b30 EFLAGS: 00010286 [ 2.013583] RAX: ffffc90000213b30 RBX: ffffc90000213c30 RCX: 000000000013fff0 [ 2.013615] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffc90000213c30 [ 2.013643] RBP: ffffc90000213b30 R08: 0000000000000000 R09: ffffc90000213ba0 [ 2.013673] R10: ffffffffffffffff R11: 000000000013ffff R12: ffffc90000213c40 [ 2.013701] R13: 0000000000000001 R14: dead000000000122 R15: dead000000000100 [ 2.013740] FS: 00007f771d762d40(0000) GS:ffff88801f500000(0000) knlGS:0000000000000000 [ 2.013771] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.013794] CR2: 000000000013fff8 CR3: 0000000002c24000 CR4: 00000000000006e0 [ 2.013824] Call Trace: [ 2.013844] io_schedule_prepare+0x37/0x40 [ 2.013863] io_schedule+0x6/0x30 [ 2.013880] __lock_page+0x11d/0x1e0 [ 2.013898] ? file_fdatawait_range+0x20/0x20 [ 2.013919] truncate_inode_pages_range+0x412/0x750 [ 2.013939] ? find_get_pages_range_tag+0x7d/0x2f0 [ 2.013960] ? __switch_to_asm+0x34/0x70 [ 2.013975] ? __switch_to_asm+0x40/0x70 [ 2.013994] ? __switch_to_asm+0x34/0x70 [ 2.014013] ? pagevec_lookup_range_tag+0x1f/0x30 [ 2.014086] ? __filemap_fdatawait_range+0x68/0xe0 [ 2.014112] ? locks_remove_flock+0xa7/0xb0 [ 2.014129] ? __filemap_fdatawrite_range+0xdf/0x100 [ 2.014154] ? cpumask_next_and+0x19/0x20 [ 2.014172] ? smp_call_function_many_cond+0x24d/0x2a0 [ 2.014192] ? __brelse+0x20/0x20 [ 2.014207] ? __ia32_sys_fsconfig+0x430/0x430 [ 2.014226] ? __brelse+0x20/0x20 [ 2.014243] ? on_each_cpu_cond_mask+0x3e/0x80 [ 2.014263] __blkdev_put+0x6f/0x1d0 [ 2.014280] blkdev_close+0x1c/0x20 [ 2.014295] __fput+0xb1/0x240 [ 2.014311] task_work_run+0x85/0xa0 [ 2.014328] do_exit+0x39b/0xa80 [ 2.014343] ? ksys_read+0x54/0xd0 [ 2.014359] rewind_stack_do_exit+0x17/0x20 [ 2.014375] Modules linked in: [ 2.014391] CR2: 000000000013fff8 [ 2.014407] ---[ end trace baa27c3655b1ea5a ]--- [ 2.014430] RIP: 0010:__pv_queued_spin_lock_slowpath+0x195/0x2a0 [ 2.014458] Code: c4 c1 ea 12 4c 8d 6d 14 41 be 01 00 00 00 41 83 e4 03 8d 42 ff 49 c1 e4 05 48 98 49 81 c4 80 c3 02 00 4c 03 24 c5 20 89 b7 82 <49> 89 2c 24 b8 00 80 00 00 eb 15 84 c0 75 0a 41 0f b6 54 24 14 84 [ 2.014531] RSP: 0018:ffffc90000213958 EFLAGS: 00010002 [ 2.014550] RAX: 000000000000327f RBX: ffff888005ce00e0 RCX: 0000000000000001 [ 2.014578] RDX: 0000000000003280 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.014605] RBP: ffff88801f52c380 R08: 00000000fffea95e R09: ffff8880192d0c80 [ 2.014632] R10: ffff8880192d0cb8 R11: ffffc90000213b01 R12: 000344a3feab7bf8 [ 2.014660] R13: ffff88801f52c394 R14: 0000000000000001 R15: 0000000000080000 [ 2.014700] FS: 00007f771d762d40(0000) GS:ffff88801f500000(0000) knlGS:0000000000000000 [ 2.014728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.014751] CR2: 000000000013fff8 CR3: 0000000002c24000 CR4: 00000000000006e0 [ 2.014782] ------------[ cut here ]------------ [ 2.014802] WARNING: CPU: 1 PID: 1686 at kernel/exit.c:719 do_exit+0x4a/0xa80 [ 2.014830] Modules linked in: [ 2.014854] CPU: 1 PID: 1686 Comm: systemd-udevd Tainted: G D W 5.6.0-rc4-20200304-doflr-mac80211debug+ #1 [ 2.014888] RIP: 0010:do_exit+0x4a/0xa80 [ 2.014902] Code: 04 25 28 00 00 00 48 89 44 24 30 31 c0 e8 fe 3e 06 00 48 8b 83 a8 06 00 00 48 85 c0 74 0e 48 8b 10 48 39 d0 0f 84 1c 02 00 00 <0f> 0b 65 44 8b 2d b4 03 f1 7e 41 81 e5 00 ff 1f 00 44 89 6c 24 0c [ 2.215014] RSP: 0018:ffffc90000213ee8 EFLAGS: 00010086 [ 2.215041] RAX: ffffc90000213c30 RBX: ffff888005cdec00 RCX: 0000000000000000 [ 2.215071] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82c72340 [ 2.215099] RBP: 0000000000000009 R08: 0000000000000228 R09: 0000000000000000 [ 2.215128] R10: 000000000000000a R11: ffffc90000213862 R12: 0000000000000009 [ 2.215158] R13: ffff888005cdec00 R14: 0000000000000046 R15: 0000000000000000 [ 2.215200] FS: 00007f771d762d40(0000) GS:ffff88801f500000(0000) knlGS:0000000000000000 [ 2.215230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.215273] CR2: 000000000013fff8 CR3: 0000000002c24000 CR4: 00000000000006e0 [ 2.215305] Call Trace: [ 2.215326] ? ksys_read+0x54/0xd0 [ 2.215348] rewind_stack_do_exit+0x17/0x20 [ 2.215366] ---[ end trace baa27c3655b1ea5b ]--- [ 2.215386] Fixing recursive fault but reboot is needed! [ 2.215414] BUG: unable to handle page fault for address: ffffffff82045e50 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel

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