<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 12 (filtered medium)"> <style></style> </head> <body lang="ZH-CN" link="blue" vlink="purple" style="text-justify-trim:punctuation"> <div class="WordSection1"> Hi All , <o:p></o:p> Sometimes it happens Oops in linux kernel 4.16.0 AMDGPU driver, and it nerver happen in 4.15 kernel. <o:p></o:p> Software environment:Ubuntu17.10 + newest stable kernel 4.16.0 + mesa v17.2.8<o:p></o:p> GPU: Radeon Pro WX5100 CPU: arm64<o:p></o:p> Here is the calltrace:<o:p></o:p> .<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.729903] ------------[ cut here ]------------<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.729914] kernel BUG at drivers/dma-buf/reservation.c:234!<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.729926] Internal error: Oops - BUG: 0 [#1] SMP<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.729932] Modules linked in: xt_nat xt_tcpudp veth ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack br_netfilter bridge stp llc overlay snd_hda_codec_hdmi binfmt_misc nls_iso8859_1 snd_hda_intel snd_hda_codec joydev input_leds snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore ipmi_ssif shpchp ipmi_si ipmi_devintf ipmi_msghandler ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 multipath linear dm_mirror dm_region_hash dm_log raid0 ses enclosure hid_generic<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730037] usbhid hid marvell amdgpu chash gpu_sched hibmc_drm i2c_algo_bit aes_ce_blk ttm aes_ce_cipher crc32_ce crct10dif_ce drm_kms_helper ghash_ce sha2_ce syscopyarea sha256_arm64 sysfillrect sysimgblt sha1_ce fb_sys_fops drm mpt3sas hisi_sas_v2_hw hisi_sas_main raid_class libsas ehci_platform hns_dsaf scsi_transport_sas hns_enet_drv hns_mdio hnae aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730094] CPU: 41 PID: 59025 Comm: amdgpu_cs:0 Tainted: G W 4.16.0 #2<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730097] Hardware name: Huawei Taishan 2280 /BC11SPCD, BIOS 1.37 11/21/2017<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730100] pstate: 60400005 (nZCv daif +PAN -UAO)<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730118] pc : reservation_object_add_shared_fence+0x348/0x3b8<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730147] lr : ttm_eu_fence_buffer_objects+0x5c/0xd8 [ttm]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730148] sp : ffff00003aae39d0<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730150] x29: ffff00003aae39d0 x28: 0000000000000000<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730154] x27: ffff809c85067c60 x26: ffff80af5e89abb8<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730158] x25: ffff809c92bb5060 x24: ffff802e08141220<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730162] x23: ffff802fb55ea000 x22: ffff809c92bb5060<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730165] x21: 0000000000000000 x20: ffff80ad27471c00<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730169] x19: ffff00003aae3b70 x18: 0000fffd38040948<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730172] x17: 0000000000000000 x16: ffff809e434b8f00<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730176] x15: 0000fffd38040940 x14: ffff809f97332600<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730179] x13: ffff809c92bb4e60 x12: 0000000000000016<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730183] x11: 0000000000000000 x10: 0000000000000040<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730186] x9 : 0000000000000000 x8 : ffff809c92bb5100<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730190] x7 : 00000000000000b8 x6 : 0000000000000001<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730193] x5 : 0000000000000003 x4 : 0000000000000002<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730196] x3 : ffff809b77ead88c x2 : 0000000000000001<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730200] x1 : 0000000000000008 x0 : 0000000000000008<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730205] Process amdgpu_cs:0 (pid: 59025, stack limit = 0x00000000469f89e7)<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730208] Call trace:<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730212] reservation_object_add_shared_fence+0x348/0x3b8<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730225] ttm_eu_fence_buffer_objects+0x5c/0xd8 [ttm]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730482] amdgpu_cs_ioctl+0x14f8/0x19f8 [amdgpu]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730533] drm_ioctl_kernel+0x70/0xd8 [drm]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730578] drm_ioctl+0x1d4/0x428 [drm]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730771] amdgpu_drm_ioctl+0x58/0x98 [amdgpu]<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730779] do_vfs_ioctl+0xc4/0xb50<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730782] SyS_ioctl+0x8c/0xa8<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730787] el0_svc_naked+0x30/0x34<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730793] Code: 17ffff6e f9000bb3 a902dfb6 f90027ba (d4210000)<o:p></o:p> Apr 8 14:56:01 ubuntu kernel: [30040.730797] ---[ end trace 07398b112d335fc8 ]--- <o:p></o:p> <o:p> </o:p> </div> </body> </html>