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<body><span class="vcard"><a class="email" href="mailto:trek00@inbox.ru" title="Trek <trek00@inbox.ru>"> <span class="fn">Trek</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - BUG: unable to handle kernel NULL pointer dereference"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94891">bug 94891</a>
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<th>What</th>
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<th>Added</th>
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<td style="text-align:right;">CC</td>
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<td>trek00@inbox.ru
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - BUG: unable to handle kernel NULL pointer dereference"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94891#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - BUG: unable to handle kernel NULL pointer dereference"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94891">bug 94891</a>
from <span class="vcard"><a class="email" href="mailto:trek00@inbox.ru" title="Trek <trek00@inbox.ru>"> <span class="fn">Trek</span></a>
</span></b>
<pre>I think to have caught the same bug, dragging some text in firefox
amd a4-4000 processor with radeon 7480d
Debian jessie+backports, mesa 11.1.3, libdrm 2.4.67, linux 3.16.7-ckt25
(--) RADEON(0): Chipset: "ARUBA" (ChipID = 0x9993)
first crash log:
May 6 13:36:51 illusion kernel: [ 1436.382236] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000008
May 6 13:36:51 illusion kernel: [ 1436.382280] IP: [<ffffffffa035fc3d>]
radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.382333] PGD 0
May 6 13:36:51 illusion kernel: [ 1436.382343] Oops: 0002 [#1] SMP
May 6 13:36:51 illusion kernel: [ 1436.382360] Modules linked in: ipt_REJECT
xt_owner xt_tcpudp xt_LOG xt_limit xt_conntrack iptable_mangle iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter
ip_tables x_tables nls_utf8 nls_cp437 vfat it87 hwmon_vid fat fuse sha256_ssse3
sha256_generic dm_crypt dm_mod eeepc_wmi asus_wmi sparse_keymap rfkill
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi kvm_amd kvm
crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd
shpchp evdev snd_hda_intel snd_hda_controller snd_hda_codec efi_pstore
snd_hwdep radeon pcspkr serio_raw efivars k10temp snd_pcm i2c_piix4 snd_timer
ttm drm_kms_helper snd drm soundcore i2c_algo_bit i2c_core acpi_cpufreq
tpm_infineon video wmi tpm_tis tpm processor button thermal_sys ext4 crc16
mbcache jbd2 raid1 md_mod sg sd_mod crc_t10dif crct10dif_generic hid_generic
usbhid hid ohci_pci crct10dif_pclmul crct10dif_common crc32c_intel r8169 mii
ohci_hcd ehci_pci ehci_hcd xhci_hcd ahci libahci libata usbcore usb_common
scsi_mod
May 6 13:36:51 illusion kernel: [ 1436.382836] CPU: 0 PID: 2248 Comm: Xorg Not
tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-1
May 6 13:36:51 illusion kernel: [ 1436.382870] Hardware name: System
manufacturer System Product Name/A88XM-E, BIOS 0801 07/15/2014
May 6 13:36:51 illusion kernel: [ 1436.382904] task: ffff88021312c0d0 ti:
ffff880213ac4000 task.ti: ffff880213ac4000
May 6 13:36:51 illusion kernel: [ 1436.382933] RIP: 0010:[<ffffffffa035fc3d>]
[<ffffffffa035fc3d>] radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.382979] RSP: 0018:ffff880213ac7b18
EFLAGS: 00010292
May 6 13:36:51 illusion kernel: [ 1436.383000] RAX: 0000000000000000 RBX:
ffff880036b8d5f8 RCX: ffff880036b8cd08
May 6 13:36:51 illusion kernel: [ 1436.383027] RDX: 0000000000000001 RSI:
0000000000000000 RDI: 0000000000000000
May 6 13:36:51 illusion kernel: [ 1436.383054] RBP: ffff880036b8d550 R08:
ffff880036b8c000 R09: 0000000000000000
May 6 13:36:51 illusion kernel: [ 1436.383082] R10: 0000000000000002 R11:
ffff880213ac7e08 R12: 0000000000000020
May 6 13:36:51 illusion kernel: [ 1436.383109] R13: ffff880213ac7be0 R14:
ffff880213ac7bb0 R15: ffff880036b8d5f8
May 6 13:36:51 illusion kernel: [ 1436.383137] FS: 00007fc64e0bb980(0000)
GS:ffff88021ec00000(0000) knlGS:0000000000000000
May 6 13:36:51 illusion kernel: [ 1436.384649] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
May 6 13:36:51 illusion kernel: [ 1436.386161] CR2: 0000000000000008 CR3:
0000000213a66000 CR4: 00000000000407f0
May 6 13:36:51 illusion kernel: [ 1436.387685] Stack:
May 6 13:36:51 illusion kernel: [ 1436.389191] ffffffffa03c00bc
002000000002d8c0 0000f2a000000100 ffff880213ac7cd0
May 6 13:36:51 illusion kernel: [ 1436.390726] ffff880036b8c000
ffff88021312c0d0 ffff88021312c0d0 0000000000000001
May 6 13:36:51 illusion kernel: [ 1436.392278] 0000000000000000
0000000000000000 0000000000000000 0000000000000000
May 6 13:36:51 illusion kernel: [ 1436.393834] Call Trace:
May 6 13:36:51 illusion kernel: [ 1436.395381] [<ffffffffa03c00bc>] ?
radeon_sa_bo_new+0x25c/0x460 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.396936] [<ffffffffa0374f3e>] ?
radeon_ib_get+0x2e/0xd0 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.398479] [<ffffffffa037747c>] ?
radeon_cs_ioctl+0x13c/0x730 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.400014] [<ffffffffa02b28b7>] ?
drm_ioctl+0x1c7/0x5b0 [drm]
May 6 13:36:51 illusion kernel: [ 1436.401533] [<ffffffff811571d9>] ?
shmem_truncate_range+0x19/0x30
May 6 13:36:51 illusion kernel: [ 1436.403059] [<ffffffffa0344046>] ?
radeon_drm_ioctl+0x46/0x80 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.404572] [<ffffffff811bacdf>] ?
do_vfs_ioctl+0x2cf/0x4b0
May 6 13:36:51 illusion kernel: [ 1436.406078] [<ffffffff810852e1>] ?
task_work_run+0x91/0xb0
May 6 13:36:51 illusion kernel: [ 1436.407585] [<ffffffff811baf41>] ?
SyS_ioctl+0x81/0xa0
May 6 13:36:51 illusion kernel: [ 1436.409096] [<ffffffff81514a0d>] ?
system_call_fast_compare_end+0x10/0x15
May 6 13:36:51 illusion kernel: [ 1436.410624] Code: e4 48 8b 3b 89 c1 89 ea
48 c7 c6 80 f6 44 a0 31 c0 e8 68 17 04 e1 eb cb 66 0f 1f 44 00 00 66 66 66 66
90 48 89 f8 ba 01 00 00 00 <f0> 0f c1 57 08 83 c2 01 83 fa 01 7e 01 c3 80 3d 0e
43 11 00 00
May 6 13:36:51 illusion kernel: [ 1436.413886] RIP [<ffffffffa035fc3d>]
radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:36:51 illusion kernel: [ 1436.415509] RSP <ffff880213ac7b18>
May 6 13:36:51 illusion kernel: [ 1436.417113] CR2: 0000000000000008
May 6 13:36:51 illusion kernel: [ 1436.424690] ---[ end trace 6ff48a6a8b3b834b
]---
other crash log:
May 6 13:47:55 illusion kernel: [ 79.715856] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000008
May 6 13:47:55 illusion kernel: [ 79.715903] IP: [<ffffffffa0315c3d>]
radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:47:55 illusion kernel: [ 79.715959] PGD 0
May 6 13:47:55 illusion kernel: [ 79.715970] Oops: 0002 [#1] SMP
May 6 13:47:55 illusion kernel: [ 79.715988] Modules linked in: ipt_REJECT
xt_owner xt_tcpudp xt_LOG xt_limit xt_conntrack iptable_mangle iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter
nls_utf8 nls_cp437 ip_tables x_tables it87 hwmon_vid vfat fat fuse sha256_ssse3
sha256_generic dm_crypt dm_mod eeepc_wmi asus_wmi sparse_keymap rfkill
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi kvm_amd kvm
crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd
efi_pstore snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep k10temp
efivars pcspkr snd_pcm snd_timer snd soundcore evdev i2c_piix4 shpchp serio_raw
radeon ttm drm_kms_helper drm wmi i2c_algo_bit i2c_core tpm_infineon tpm_tis
video tpm button acpi_cpufreq processor thermal_sys ext4 crc16 mbcache jbd2
raid1 md_mod hid_generic sg sd_mod crc_t10dif crct10dif_generic usbhid hid
ohci_pci crct10dif_pclmul crct10dif_common crc32c_intel r8169 mii ehci_pci
ohci_hcd xhci_hcd ehci_hcd ahci libahci usbcore usb_common libata scsi_mod
May 6 13:47:55 illusion kernel: [ 79.716495] CPU: 1 PID: 2249 Comm: Xorg Not
tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-1
May 6 13:47:55 illusion kernel: [ 79.716530] Hardware name: System
manufacturer System Product Name/A88XM-E, BIOS 0801 07/15/2014
May 6 13:47:55 illusion kernel: [ 79.716566] task: ffff880215b08010 ti:
ffff8802162d8000 task.ti: ffff8802162d8000
May 6 13:47:55 illusion kernel: [ 79.716597] RIP: 0010:[<ffffffffa0315c3d>]
[<ffffffffa0315c3d>] radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:47:55 illusion kernel: [ 79.716647] RSP: 0018:ffff8802162dbb18
EFLAGS: 00010292
May 6 13:47:55 illusion kernel: [ 79.716669] RAX: 0000000000000000 RBX:
ffff880036b9d5f8 RCX: ffff880036b9cd08
May 6 13:47:55 illusion kernel: [ 79.716699] RDX: 0000000000000001 RSI:
0000000000000000 RDI: 0000000000000000
May 6 13:47:55 illusion kernel: [ 79.716728] RBP: ffff880036b9d550 R08:
ffff880036b9c000 R09: 0000000000000000
May 6 13:47:55 illusion kernel: [ 79.716757] R10: 0000000000000002 R11:
ffff8802162dbe08 R12: 0000000000000020
May 6 13:47:55 illusion kernel: [ 79.716786] R13: ffff8802162dbbe0 R14:
ffff8802162dbbb0 R15: ffff880036b9d5f8
May 6 13:47:55 illusion kernel: [ 79.716816] FS: 00007fc86aed3980(0000)
GS:ffff88021ec80000(0000) knlGS:0000000000000000
May 6 13:47:55 illusion kernel: [ 79.718434] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
May 6 13:47:55 illusion kernel: [ 79.720051] CR2: 0000000000000008 CR3:
0000000213b38000 CR4: 00000000000407e0
May 6 13:47:55 illusion kernel: [ 79.721681] Stack:
May 6 13:47:55 illusion kernel: [ 79.723296] ffffffffa03760bc
002000000006a4c0 0000f2a000000100 ffff8802162dbcd0
May 6 13:47:55 illusion kernel: [ 79.724938] ffff880036b9c000
ffff880215b08010 ffff880215b08010 0000000000000001
May 6 13:47:55 illusion kernel: [ 79.726597] 0000000000000000
0000000000000000 0000000000000000 0000000000000000
May 6 13:47:55 illusion kernel: [ 79.728258] Call Trace:
May 6 13:47:55 illusion kernel: [ 79.729913] [<ffffffffa03760bc>] ?
radeon_sa_bo_new+0x25c/0x460 [radeon]
May 6 13:47:55 illusion kernel: [ 79.731581] [<ffffffffa032af3e>] ?
radeon_ib_get+0x2e/0xd0 [radeon]
May 6 13:47:55 illusion kernel: [ 79.733232] [<ffffffffa032d47c>] ?
radeon_cs_ioctl+0x13c/0x730 [radeon]
May 6 13:47:55 illusion kernel: [ 79.734872] [<ffffffffa02be8b7>] ?
drm_ioctl+0x1c7/0x5b0 [drm]
May 6 13:47:55 illusion kernel: [ 79.736497] [<ffffffff813cbf71>] ?
input_event_to_user+0x51/0xa0
May 6 13:47:55 illusion kernel: [ 79.738119] [<ffffffff810125b9>] ?
do_signal+0x199/0xa10
May 6 13:47:55 illusion kernel: [ 79.739736] [<ffffffff8101e5c2>] ?
__restore_xstate_sig+0x82/0x570
May 6 13:47:55 illusion kernel: [ 79.741352] [<ffffffffa049c6d9>] ?
evdev_read+0x109/0x3b0 [evdev]
May 6 13:47:55 illusion kernel: [ 79.742981] [<ffffffffa02fa046>] ?
radeon_drm_ioctl+0x46/0x80 [radeon]
May 6 13:47:55 illusion kernel: [ 79.744610] [<ffffffff811bacdf>] ?
do_vfs_ioctl+0x2cf/0x4b0
May 6 13:47:55 illusion kernel: [ 79.746252] [<ffffffff81079765>] ?
restore_altstack+0x15/0x30
May 6 13:47:55 illusion kernel: [ 79.747898] [<ffffffff81013056>] ?
sys_rt_sigreturn+0xa6/0xb0
May 6 13:47:55 illusion kernel: [ 79.749546] [<ffffffff811baf41>] ?
SyS_ioctl+0x81/0xa0
May 6 13:47:55 illusion kernel: [ 79.751195] [<ffffffff81514a0d>] ?
system_call_fast_compare_end+0x10/0x15
May 6 13:47:55 illusion kernel: [ 79.752845] Code: e4 48 8b 3b 89 c1 89 ea
48 c7 c6 80 56 40 a0 31 c0 e8 68 b7 08 e1 eb cb 66 0f 1f 44 00 00 66 66 66 66
90 48 89 f8 ba 01 00 00 00 <f0> 0f c1 57 08 83 c2 01 83 fa 01 7e 01 c3 80 3d 0e
43 11 00 00
May 6 13:47:55 illusion kernel: [ 79.756288] RIP [<ffffffffa0315c3d>]
radeon_fence_ref+0xd/0x50 [radeon]
May 6 13:47:55 illusion kernel: [ 79.757954] RSP <ffff8802162dbb18>
May 6 13:47:55 illusion kernel: [ 79.759598] CR2: 0000000000000008
May 6 13:47:55 illusion kernel: [ 79.767667] ---[ end trace 2b7760e180a03b61
]---</pre>
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