Bug#983034: plasma-workspace-wayland: hanging in ksplashqml
On 19.02.21 19:40, Dennis Filder wrote:
> Control: tag -1 + moreinfo bullseye sid
>
> If you cannot switch to console with Ctrl-Alt-F2 then this is a strong
> indicator that the bug is in the kernel, probably nouveau.
>
> If you can reproduce this reliably it would help a lot if you could
> provide the output of these commands after the bug has happened:
>
> dmesg
> strace -f -p $(pidof ksplashqml) 2>&1 | dd bs=1k count=20
> journalctl -ab
>
> You may have to run some of them as root.
>
dmesg shows a crash in the nouveau driver:
[ 441.529012] ------------[ cut here ]------------
[ 441.529076] WARNING: CPU: 1 PID: 1964 at
drivers/gpu/drm/nouveau/nvif/vmm.c:68 nvif_vmm_put+0x84/0x9c [nouveau]
[ 441.529078] Modules linked in: xt_conntrack nft_chain_nat
xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 xfrm_user xfrm_algo nft_counter xt_addrtype nft_compat
nf_tables nfnetlink br_netfilter bridge stp llc rfkill overlay nls_ascii
nls_cp437 vfat fat snd_hda_codec_hdmi aes_ce_blk crypto_simd
snd_hda_intel cryptd snd_intel_dspcfg aes_ce_cipher snd_hda_codec
ghash_ce gf128mul libaes sha2_ce snd_hda_core snd_hwdep snd_pcm
sha256_arm64 sha1_ce snd_timer evdev snd soundcore sg efi_pstore
omap_rng rng_core sbsa_gwdt armada_thermal fuse configfs efivarfs
ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 btrfs blake2b_generic
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor xor_neon raid6_pq libcrc32c crc32c_generic raid1 raid0
multipath linear md_mod hid_generic usbhid hid sd_mod t10_pi crc_t10dif
crct10dif_generic nouveau i2c_mux_pca954x i2c_mux ahci_platform
libahci_platform libahci marvell10g libata crct10dif_ce
[ 441.529194] crct10dif_common scsi_mod i2c_algo_bit ttm xhci_plat_hcd
drm_kms_helper marvell xhci_hcd drm mvpp2 usbcore i2c_mv64xxx mvmdio
mdio_devres sfp mdio_i2c phylink of_mdio phy_generic fixed_phy libphy
sdhci_xenon_driver sdhci_pltfm usb_common phy_mvebu_cp110_comphy fixed sdhci
[ 441.529236] CPU: 1 PID: 1964 Comm: kworker/1:0 Not tainted
5.10.0-3-arm64 #1 Debian 5.10.13-1
[ 441.529238] Hardware name: SolidRun Armada 8040 MacchiatoBin/Armada
8040 MacchiatoBin, BIOS EDK II Mar 26 2020
[ 441.529284] Workqueue: events nouveau_cli_work [nouveau]
[ 441.529289] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 441.529332] pc : nvif_vmm_put+0x84/0x9c [nouveau]
[ 441.529375] lr : nvif_vmm_put+0x78/0x9c [nouveau]
[ 441.529376] sp : ffff8000119cbc80
[ 441.529378] x29: ffff8000119cbc80 x28: 0000000000000000·
[ 441.529383] x27: ffff386ac5329f28 x26: 0000000000000001·
[ 441.529387] x25: dead000000000100 x24: dead000000000122·
[ 441.529391] x23: ffff386ac5329f18 x22: ffff386ac5077300·
[ 441.529395] x21: ffff386ac5329f08 x20: ffff386ac2b00080·
[ 441.529398] x19: ffff8000119cbce8 x18: 0000000000000000·
[ 441.529402] x17: 0000000000000000 x16: ffffbbff1d518580·
[ 441.529406] x15: 0000000000000000 x14: 0000000000000000·
[ 441.529410] x13: 0000000000000000 x12: 0000000000000040·
[ 441.529414] x11: ffffbbff1dcf5ec0 x10: 0000000000000ad0·
[ 441.529417] x9 : ffffbbfea5a3d3f0 x8 : fefefefefefefeff·
[ 441.529421] x7 : 8800000000880000 x6 : ffff8000119cbcb8·
[ 441.529425] x5 : 0000000000000000 x4 : 0000000000000008·
[ 441.529429] x3 : 00000000048a0000 x2 : 0000000000000000·
[ 441.529433] x1 : 0000000000000000 x0 : 00000000fffffffe·
[ 441.529437] Call trace:
[ 441.529480] nvif_vmm_put+0x84/0x9c [nouveau]
[ 441.529523] nouveau_vma_del+0x9c/0xe0 [nouveau]
[ 441.529565] nouveau_gem_object_delete_work+0x48/0x80 [nouveau]
[ 441.529607] nouveau_cli_work+0xe8/0x180 [nouveau]
[ 441.529616] process_one_work+0x1d4/0x490
[ 441.529619] worker_thread+0x188/0x504
[ 441.529622] kthread+0x130/0x134
[ 441.529625] ret_from_fork+0x10/0x38
[ 441.529628] ---[ end trace 28675099a596659e ]---
:set nonumber
Best regards
Heinrich
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