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SubjectRe: [regression][6.1] After commit e4dc45b1848bc6bcac31eb1b4ccdd7f6718b3c86 system randomly hungs
From
Yeah, that's a known issue. Dave already reverted the problematic patch 
in drm-next.

But it will probably take a while until the revert propagates down into
the drm-misc-next or whatever you uses.

Regards,
Christian.

Am 11.10.22 um 14:02 schrieb Mikhail Gavrilov:
> Hi!
> The hungs occurs randomly, but I found good reproductive scenario
> (This is running the campaign in the game Halo Infinite)
> The backtrace is look like this:
>
> [ 147.260971] BUG: kernel NULL pointer dereference, address: 0000000000000088
> [ 147.260987] ------------[ cut here ]------------
> [ 147.260988] WARNING: CPU: 3 PID: 0 at kernel/softirq.c:321
> __local_bh_disable_ip+0x9e/0xb0
> [ 147.260993] Modules linked in: uinput rfcomm snd_seq_dummy
> snd_hrtimer netconsole nft_objref nf_conntrack_netbios_ns
> nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib
> nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct
> nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set
> nf_tables nfnetlink qrtr bnep sunrpc snd_sof_amd_renoir intel_rapl_msr
> snd_sof_amd_acp intel_rapl_common mt7921e snd_sof_pci mt7921_common
> binfmt_misc snd_sof mt76_connac_lib snd_sof_utils vfat
> snd_hda_codec_realtek snd_soc_core snd_hda_codec_generic mt76 fat
> snd_hda_codec_hdmi snd_hda_intel edac_mce_amd snd_compress ac97_bus
> btusb kvm_amd snd_intel_dspcfg snd_pcm_dmaengine btrtl
> snd_intel_sdw_acpi btbcm snd_hda_codec snd_pci_acp6x mac80211 kvm
> snd_hda_core btintel btmtk irqbypass snd_hwdep snd_seq libarc4
> snd_seq_device bluetooth snd_pcm snd_pci_acp5x snd_timer
> snd_rn_pci_acp3x cfg80211 rapl pcspkr joydev asus_nb_wmi wmi_bmof
> snd_acp_config snd snd_soc_acpi k10temp
> [ 147.261033] soundcore i2c_piix4 snd_pci_acp3x asus_wireless
> amd_pmc zram amdgpu drm_ttm_helper ttm hid_asus iommu_v2 asus_wmi
> gpu_sched ledtrig_audio sparse_keymap drm_buddy platform_profile
> drm_display_helper crct10dif_pclmul crc32_pclmul nvme rfkill
> crc32c_intel ucsi_acpi hid_multitouch video ghash_clmulni_intel
> nvme_core ccp typec_ucsi serio_raw r8169 cec sp5100_tco typec
> i2c_hid_acpi wmi i2c_hid ip6_tables ip_tables fuse
> [ 147.261045] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W L
> 6.0.0-rc2-02-907cc346ff6a69a08b4786c4ed2a78ac0120b9da+ #124
> [ 147.261046] Hardware name: ASUSTeK COMPUTER INC. ROG Strix
> G513QY_G513QY/G513QY, BIOS G513QY.318 03/29/2022
> [ 147.261047] RIP: 0010:__local_bh_disable_ip+0x9e/0xb0
> [ 147.261048] Code: 25 00 1e 02 00 48 89 df e8 6f 23 08 00 85 c0 75
> 0e 48 89 9d 30 1c 00 00 5b 5d c3 cc cc cc cc 31 ff 31 db e8 54 23 08
> 00 eb e7 <0f> 0b e9 76 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
> 44 00
> [ 147.261049] RSP: 0018:ffffa4e1c028c8d8 EFLAGS: 00010006
> [ 147.261050] RAX: 0000000080010005 RBX: 0000000000000201 RCX: 0000000000000018
> [ 147.261051] RDX: 00000f440b255950 RSI: 0000000000000201 RDI: ffffffffc1b652e5
> [ 147.261051] RBP: ffff93a4eaf00fd8 R08: 0000000000000001 R09: 0000000000000000
> [ 147.261052] R10: 7635d840c31a8942 R11: fcca632b3d1b0d46 R12: ffff93a4f7831000
> [ 147.261052] R13: ffff93a4eaf00ee0 R14: ffff93a4efd84178 R15: ffff93a4efd84000
> [ 147.261053] FS: 0000000000000000(0000) GS:ffff93b396e00000(0000)
> knlGS:0000000000000000
> [ 147.261054] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 147.261055] CR2: 0000000000000088 CR3: 000000012a610000 CR4: 0000000000750ee0
> [ 147.261056] PKRU: 55555554
> [ 147.261056] Call Trace:
> [ 147.261060] <IRQ>
> [ 147.261068] _raw_spin_lock_bh+0x1d/0x80
> [ 147.261074] ieee80211_queue_skb+0x125/0x7a0 [mac80211]
> [ 147.261113] ? __skb_get_hash+0x55/0x200
> [ 147.261117] ieee80211_tx_8023+0x9c/0x1c0 [mac80211]
> [ 147.261155] ieee80211_subif_start_xmit_8023+0x2b5/0x510 [mac80211]
> [ 147.261191] netpoll_start_xmit+0x121/0x190
> [ 147.261199] netpoll_send_skb+0x1fc/0x300
> [ 147.261202] write_msg+0xdc/0xf0 [netconsole]
> [ 147.261207] console_emit_next_record.constprop.0+0x17d/0x300
> [ 147.261214] console_unlock+0xf3/0x1f0
> [ 147.261215] vprintk_emit+0x152/0x350
> [ 147.261217] ? plist_add+0xba/0xf0
> [ 147.261223] _printk+0x48/0x4e
> [ 147.261231] ? rcu_read_lock_sched_held+0x10/0x80
> [ 147.261235] page_fault_oops.cold+0xcf/0x1f9
> [ 147.261240] ? do_user_addr_fault+0x65/0x6b0
> [ 147.261243] ? _raw_spin_unlock_irqrestore+0x40/0x60
> [ 147.261247] exc_page_fault+0x7e/0x300
> [ 147.261249] asm_exc_page_fault+0x22/0x30
> [ 147.261252] RIP: 0010:drm_sched_job_done.isra.0+0xc/0x1e0 [gpu_sched]
> [ 147.261255] Code: 89 d7 e8 87 02 0d f0 e9 54 ff ff ff 48 89 d7 e8
> ea 66 37 f0 e9 47 ff ff ff 0f 1f 44 00 00 0f 1f 44 00 00 41 54 55 53
> 48 89 fb <48> 8b af 88 00 00 00 f0 ff 8d 70 02 00 00 48 8b 85 a8 03 00
> 00 f0
> [ 147.261256] RSP: 0018:ffffa4e1c028cdc8 EFLAGS: 00010093
> [ 147.261257] RAX: ffffffffc06dc380 RBX: 0000000000000000 RCX: 0000000000000018
> [ 147.261257] RDX: 00000efa9afe3594 RSI: ffff93a7a4c1ec90 RDI: 0000000000000000
> [ 147.261258] RBP: ffff93a7a4c1ee10 R08: 0000000000000001 R09: 0000000000000000
> [ 147.261259] R10: 0000000000000000 R11: 0000000000000001 R12: ffffa4e1c028cde8
> [ 147.261259] R13: 0000000000000086 R14: 00000000ffffffff R15: ffff93a4fbed0198
> [ 147.261261] ? drm_sched_job_done.isra.0+0x1e0/0x1e0 [gpu_sched]
> [ 147.261266] dma_fence_signal_timestamp_locked+0x9e/0x1c0
> [ 147.261274] dma_fence_signal+0x36/0x70
> [ 147.261276] amdgpu_fence_process+0xd5/0x140 [amdgpu]
> [ 147.261497] sdma_v5_2_process_trap_irq+0x10d/0x130 [amdgpu]
> [ 147.261737] amdgpu_irq_dispatch+0xcc/0x270 [amdgpu]
> [ 147.261918] amdgpu_ih_process+0x80/0x100 [amdgpu]
> [ 147.262072] amdgpu_irq_handler+0x1f/0x60 [amdgpu]
> [ 147.262227] __handle_irq_event_percpu+0x93/0x330
> [ 147.262231] handle_irq_event+0x34/0x70
> [ 147.262232] handle_edge_irq+0x9f/0x240
> [ 147.262233] __common_interrupt+0x71/0x150
> [ 147.262236] common_interrupt+0xb4/0xd0
> [ 147.262237] </IRQ>
> [ 147.262238] <TASK>
>
> bisect points to this commit: e4dc45b1848bc6bcac31eb1b4ccdd7f6718b3c86
>
> $ git bisect bad
> e4dc45b1848bc6bcac31eb1b4ccdd7f6718b3c86 is the first bad commit
> commit e4dc45b1848bc6bcac31eb1b4ccdd7f6718b3c86
> Author: Arvind Yadav <Arvind.Yadav@amd.com>
> Date: Wed Sep 14 22:13:20 2022 +0530
>
> drm/sched: Use parent fence instead of finished
>
> Using the parent fence instead of the finished fence
> to get the job status. This change is to avoid GPU
> scheduler timeout error which can cause GPU reset.
>
> Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
> Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
> Link: https://patchwork.freedesktop.org/patch/msgid/20220914164321.2156-6-Arvind.Yadav@amd.com
> Signed-off-by: Christian König <christian.koenig@amd.com>
>
> drivers/gpu/drm/scheduler/sched_main.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> Thanks.
>

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