[Bug 109175] list_del corruption on thinkpad x220, in kernel v4.20-rc1+

Sat Dec 29 20:11:15 UTC 2018

https://bugs.freedesktop.org/show_bug.cgi?id=109175

--- Comment #3 from zblabunk at gmail.com ---
Another one.

fgfs always segfaults, thats "normal".

[79648.504664] fgfs[6740]: segfault at 8b58308 ip 0000000008b58308 sp
00000000ffd1327c error 15
[79648.504674] Code: 00 00 00 00 00 00 29 00 00 00 f0 83 b5 08 38 82 b5 08 00
00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 a8 82 b5 08 00 00 00 00 <00> 00 00
00 11 00 00 00 08 8d b5 08 00 00 00 00 00 00 00 00 21 00
[79922.056325] list_del corruption. next->prev should be ffff88818761da28, but
was ffff88817cb31e80
[79922.056348] ------------[ cut here ]------------
[79922.056355] kernel BUG at /data/fast/l/k/lib/list_debug.c:56!
[79922.056368] invalid opcode: 0000 [#1] SMP PTI
[79922.056375] CPU: 1 PID: 3478 Comm: Xorg Not tainted 4.20.0-rc6-next-20181210
#3
[79922.056379] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET74WW (1.44 )
03/13/2018
[79922.056391] RIP: 0010:__list_del_entry_valid+0x52/0x90
[79922.056396] Code: 41 48 8b 12 48 39 d7 75 4c 48 8b 50 08 48 39 d7 75 07 b8
01 00 00 00 5d c3 48 89 fe 31 c0 48 c7 c7 20 9f 5e 85 e8 5c bb d1 ff <0f> 0b 48
89 c2 48 89 fe 31 c0 48 c7 c7 50 9e 5e 85 e8 46 bb d1 ff
[79922.056401] RSP: 0000:ffffc90000287ac0 EFLAGS: 00213282
[79922.056406] RAX: 0000000000000054 RBX: ffff88817cb31c00 RCX:
0000000000000000
[79922.056410] RDX: 0000000000000000 RSI: ffff88819e2653d8 RDI:
ffff88819e2653d8
[79922.056413] RBP: ffffc90000287ac0 R08: ffff8881944c1090 R09:
0000000000000000
[79922.056417] R10: 00000000008e9088 R11: 3038653133626301 R12:
ffff888187769b40
[79922.056421] R13: ffff88818761d900 R14: ffff88817cb31e80 R15:
ffff88818761da28
[79922.056425] FS:  0000000000000000(0000) GS:ffff88819e240000(0063)
knlGS:00000000f793c880
[79922.056430] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[79922.056433] CR2: 0000000008064670 CR3: 000000018bdc6001 CR4:
00000000000606a0
[79922.056436] Call Trace:
[79922.056447]  i915_vma_move_to_active+0x1c3/0x530
[79922.056454]  ? i915_request_await_object+0xf4/0x280
[79922.056461]  i915_gem_do_execbuffer+0xe28/0x1090
[79922.056470]  ? find_held_lock+0x39/0xb0
[79922.056478]  ? kvmalloc_node+0x26/0x70
[79922.056484]  i915_gem_execbuffer2_ioctl+0x1b4/0x360
[79922.056489]  ? i915_gem_execbuffer_ioctl+0x290/0x290
[79922.056494]  ? i915_gem_execbuffer_ioctl+0x290/0x290
[79922.056500]  drm_ioctl_kernel+0xaa/0xf0
[79922.056505]  drm_ioctl+0x31b/0x3c0
[79922.056510]  ? i915_gem_execbuffer_ioctl+0x290/0x290
[79922.056517]  i915_compat_ioctl+0x37/0x40
[79922.056523]  __ia32_compat_sys_ioctl+0x429/0xe90
[79922.056528]  ? ksys_read+0x53/0xc0
[79922.056536]  do_int80_syscall_32+0x50/0x100
[79922.056543]  entry_INT80_compat+0x7d/0x82
[79922.056548] RIP: 0023:0xf7f4dc42
[79922.056552] Code: 65 8b 15 04 00 00 00 8b 0e 8b 0c ca 83 f9 ff 75 0c 89 04
24 89 f0 e8 b3 fe ff ff eb 05 8b 46 04 01 c8 83 c4 14 5b 5e c3 cd 80 <c3> 8d b6
00 00 00 00 8d bc 27 00 00 00 00 8b 1c 24 c3 8d b6 00 00
[79922.056556] RSP: 002b:00000000fff8c764 EFLAGS: 00203292 ORIG_RAX:
0000000000000036
[79922.056561] RAX: ffffffffffffffda RBX: 000000000000000a RCX:
0000000040406469
[79922.056565] RDX: 00000000fff8c80c RSI: 0000000000000000 RDI:
0000000040406469
[79922.056569] RBP: 000000000000000a R08: 0000000000000000 R09:
0000000000000000
[79922.056572] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[79922.056576] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
[79922.056580] Modules linked in:
[79922.056587] ---[ end trace 5702775963af313b ]---
[79922.056593] RIP: 0010:__list_del_entry_valid+0x52/0x90
[79922.056597] Code: 41 48 8b 12 48 39 d7 75 4c 48 8b 50 08 48 39 d7 75 07 b8
01 00 00 00 5d c3 48 89 fe 31 c0 48 c7 c7 20 9f 5e 85 e8 5c bb d1 ff <0f> 0b 48
89 c2 48 89 fe 31 c0 48 c7 c7 50 9e 5e 85 e8 46 bb d1 ff
[79922.056601] RSP: 0000:ffffc90000287ac0 EFLAGS: 00213282
[79922.056605] RAX: 0000000000000054 RBX: ffff88817cb31c00 RCX:
0000000000000000
[79922.056609] RDX: 0000000000000000 RSI: ffff88819e2653d8 RDI:
ffff88819e2653d8
[79922.056612] RBP: ffffc90000287ac0 R08: ffff8881944c1090 R09:
0000000000000000
[79922.056616] R10: 00000000008e9088 R11: 3038653133626301 R12:
ffff888187769b40
[79922.056619] R13: ffff88818761d900 R14: ffff88817cb31e80 R15:
ffff88818761da28
[79922.056624] FS:  0000000000000000(0000) GS:ffff88819e240000(0063)
knlGS:00000000f793c880
[79922.056628] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[79922.056631] CR2: 0000000008064670 CR3: 000000018bdc6001 CR4:
00000000000606a0
[79950.522519] wlan1: deauthenticating from 00:00:00:00:00:01 by local choice
(Reason: 3=DEAUTH_LEAVING)
[80077.424202] wlan1: authenticate with 00:00:00:00:00:01
[80077.428304] wlan1: send auth to 00:00:00:00:00:01 (try 1/3)
[80077.430713] wlan1: authenticated
[80077.433089] wlan1: associate with 00:00:00:00:00:01 (try 1/3)
[80077.437077] wlan1: RX AssocResp from 00:00:00:00:00:01 (capab=0x401 status=0
aid=4)
[80077.440273] wlan1: associated

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