This bug is awaiting verification that the linux/4.15.0-167.175 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1953386 Title: hisi_sas driver may oops in prep_ssp_v3_hw() Status in kunpeng920: Fix Committed Status in kunpeng920 ubuntu-18.04 series: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Committed Bug description: [Impact] The hisi_sas driver occasionally oopses on boot. [ 32.724666] Unable to handle kernel NULL pointer dereference at virtual address 00000110 [ 32.732720] Mem abort info: [ 32.735504] ESR = 0x96000004 [ 32.738546] Exception class = DABT (current EL), IL = 32 bits [ 32.744440] SET = 0, FnV = 0 [ 32.747482] EA = 0, S1PTW = 0 [ 32.750612] Data abort info: [ 32.753478] ISV = 0, ISS = 0x00000004 [ 32.757298] CM = 0, WnR = 0 [ 32.760256] user pgtable: 4k pages, 48-bit VAs, pgd = (ptrval) [ 32.766755] [0000000000000110] *pgd=0000000000000000 [ 32.771700] Internal error: Oops: 96000004 [#1] SMP [ 32.776557] Modules linked in: realtek hibmc_drm aes_ce_blk aes_ce_cipher ttm crct10dif_ce ghash_ce drm_kms_helper ixgbe(+) syscopyarea sha2_ce sysfillrect sysimgblt fb_sys_fops ptp sha256_arm64 sha1_ce hns3 hisi_sas_v3_hw(+) hinic pps_core hisi_sas_main drm hclge mdio libsas ahci hnae3 scsi_transport_sas libahci gpio_dwapb hid_generic usbhid hid aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64 [ 32.811755] Process kworker/u256:1 (pid: 1280, stack limit = 0x (ptrval)) [ 32.819118] CPU: 66 PID: 1280 Comm: kworker/u256:1 Not tainted 4.15.18+ #24 [ 32.826047] Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V3.B160.01 01/15/2020 [ 32.834884] Workqueue: 0000:74:02.0_disco_q sas_discover_domain [libsas] [ 32.839182] hns3 0000:bd:00.0 enp189s0f0: renamed from eth8 [ 32.841558] pstate: a0c00009 (NzCv daif +PAN +UAO) [ 32.851878] pc : prep_ssp_v3_hw+0x64/0x340 [hisi_sas_v3_hw] [ 32.857426] lr : hisi_sas_task_exec.constprop.0+0x304/0x640 [hisi_sas_main] [ 32.864354] sp : ffff000021833a00 [ 32.867653] x29: ffff000021833a00 x28: ffffb790728621e0 [ 32.872940] x27: ffffb790728607d8 x26: ffffb79072861158 [ 32.878227] x25: ffffd7b07b9340a0 x24: 0000000000000028 [ 32.883515] x23: ffffd7906cd69400 x22: ffffd7906cd69418 [ 32.888802] x21: ffffb79072aad3d0 x20: ffff000021b33000 [ 32.894089] x19: ffffb79072aad3d0 x18: 0000000000000030 [ 32.899376] x17: 000000009e710776 x16: ffff3efb16aabb00 [ 32.904663] x15: ffffffffffffffff x14: ffff3efb976abcef [ 32.909950] x13: 0000000000000006 x12: ffffb79072863480 [ 32.915237] x11: ffffb79072aad3e0 x10: ffffb79072861148 [ 32.920524] x9 : 0000000000000000 x8 : ffff000024cc0fb0 [ 32.925812] x7 : 0000000000000000 x6 : 000000000000003f [ 32.931099] x5 : 0000000000000040 x4 : 00000000200000a0 [ 32.936386] x3 : ffffd79071e2d400 x2 : ffff000021833bb4 [ 32.941673] x1 : ffffb79072863460 x0 : 00000000280000a0 [ 32.946960] Call trace: [ 32.949398] prep_ssp_v3_hw+0x64/0x340 [hisi_sas_v3_hw] [ 32.954600] hisi_sas_task_exec.constprop.0+0x304/0x640 [hisi_sas_main] [ 32.961184] hisi_sas_exec_internal_tmf_task+0xec/0x290 [hisi_sas_main] [ 32.967767] hisi_sas_init_device+0x84/0x100 [hisi_sas_main] [ 32.973401] hisi_sas_dev_found+0xa4/0x24c [hisi_sas_main] [ 32.978864] sas_notify_lldd_dev_found+0x44/0xc0 [libsas] [ 32.984239] sas_discover_end_dev+0x24/0x30 [libsas] [ 32.989182] sas_ex_discover_devices+0x950/0xbfc [libsas] [ 32.994557] sas_discover_root_expander+0x12c/0x150 [libsas] [ 33.000192] sas_discover_domain+0x340/0x664 [libsas] [ 33.005225] process_one_work+0x1bc/0x3ec [ 33.009217] worker_thread+0x58/0x4a0 [ 33.012863] kthread+0x13c/0x170 [ 33.016077] ret_from_fork+0x10/0x18 [ 33.019638] Code: 2a004820 2a040000 f9400ed8 f9410061 (3943a319) [ 33.025705] ---[ end trace da9256b7aa3297ba ]--- [Test Case] Boot a hi1620-based server w/ root disk attached to hisi_sas v3 controller. [Fix] e1ba0b0b4451 scsi: hisi_sas: Fix to only call scsi_get_prot_op() for non-NULL scsi_cmnd [Where things could go wrong] We could potentially be trading one boot time crash for another that hasn't popped up in testing. To manage notifications about this bug go to: https://bugs.launchpad.net/kunpeng920/+bug/1953386/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
