Hello I found this issue with blktests on[1], did we miss some patch on stable? [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.13 [ 68.989907] run blktests block/006 at 2021-09-09 04:34:35 [ 69.085724] null_blk: module loaded [ 74.271624] Unable to handle kernel NULL pointer dereference at virtual address 00000000000002b8 [ 74.280414] Mem abort info: [ 74.283195] ESR = 0x96000004 [ 74.286245] EC = 0x25: DABT (current EL), IL = 32 bits [ 74.291545] SET = 0, FnV = 0 [ 74.294587] EA = 0, S1PTW = 0 [ 74.297720] Data abort info: [ 74.300588] ISV = 0, ISS = 0x00000004 [ 74.304411] CM = 0, WnR = 0 [ 74.307368] user pgtable: 4k pages, 48-bit VAs, pgdp=000008004366e000 [ 74.313796] [00000000000002b8] pgd=0000000000000000, p4d=0000000000000000 [ 74.320577] Internal error: Oops: 96000004 [#1] SMP [ 74.325443] Modules linked in: null_blk mlx5_ib ib_uverbs ib_core rfkill sunrpc vfat fat joydev acpi_ipmi ipmi_ssif cdc_ether usbnet mii mlx5_core psample ipmi_devintf mlxfw tls ipmi_msghandler arm_cmn cppc_cpufreq arm_dsu_pmu acpi_tad fuse zram ip_tables xfs ast i2c_algo_bit drm_vram_helper drm_kms_helper crct10dif_ce syscopyarea ghash_ce sysfillrect uas sysimgblt sbsa_gwdt fb_sys_fops cec drm_ttm_helper ttm nvme usb_storage nvme_core drm xgene_hwmon aes_neon_bs [ 74.366458] CPU: 31 PID: 2511 Comm: fio Not tainted 5.13.15+ #1 [ 74.372367] Hardware name: WIWYNN Mt.Jade Server System B81.030Z1.0007/Mt.Jade Motherboard, BIOS 1.6.20210526 (SCP: 1.06.20210526) 2021/05/26 [ 74.385045] pstate: 00400009 (nzcv daif +PAN -UAO -TCO BTYPE=--) [ 74.391040] pc : blk_mq_put_rq_ref+0x20/0xb4 [ 74.395301] lr : bt_iter+0x64/0xd0 [ 74.398690] sp : ffff800049153980 [ 74.401992] x29: ffff800049153980 x28: ffff07ff8f694520 x27: 0000000000400cc0 [ 74.409116] x26: ffff07ffbff407f0 x25: 00000000000000c0 x24: 0000000000000010 [ 74.416240] x23: 0000000000000000 x22: 0000000000000001 x21: ffff07ffc50d0000 [ 74.423363] x20: ffff800049153a50 x19: ffff07ffc5188c40 x18: 0000000000000000 [ 74.430486] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 74.437609] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 74.444732] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffaae6737ae164 [ 74.451855] x8 : ffff800049153c00 x7 : ffffffffffffff80 x6 : 0000000000000007 [ 74.458978] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff07ffc5188d28 [ 74.466100] x2 : 0000000000000000 x1 : ffff07ffc5188c40 x0 : ffff07ffc5188c40 [ 74.473224] Call trace: [ 74.475657] blk_mq_put_rq_ref+0x20/0xb4 [ 74.479567] bt_iter+0x64/0xd0 [ 74.482609] blk_mq_queue_tag_busy_iter+0x1a0/0x300 [ 74.487475] blk_mq_in_flight+0x30/0x44 [ 74.491298] part_stat_show+0x60/0x160 [ 74.495036] dev_attr_show+0x2c/0x6c [ 74.498599] sysfs_kf_seq_show+0x94/0x140 [ 74.502598] kernfs_seq_show+0x38/0x44 [ 74.506336] seq_read_iter+0x1dc/0x4f0 [ 74.510075] kernfs_fop_read_iter+0x44/0x50 [ 74.514245] new_sync_read+0xdc/0x154 [ 74.517896] vfs_read+0x158/0x1e4 [ 74.521199] ksys_read+0x64/0xf0 [ 74.524414] __arm64_sys_read+0x28/0x34 [ 74.528237] invoke_syscall+0x50/0x120 [ 74.531976] el0_svc_common.constprop.0+0x4c/0x100 [ 74.536755] do_el0_svc+0x34/0xa0 [ 74.540057] el0_svc+0x2c/0x54 [ 74.543100] el0_sync_handler+0xa4/0x130 [ 74.547011] el0_sync+0x19c/0x1c0 [ 74.550320] Code: a9bf7bfd aa0003e1 910003fd f9400802 (f9415c42) [ 74.556503] ---[ end trace 76adda8a4ccf9d09 ]--- [ 74.561107] Kernel panic - not syncing: Oops: Fatal exception [ 74.566897] SMP: stopping secondary CPUs [ 74.570914] Kernel Offset: 0x2ae6630e0000 from 0xffff800010000000 [ 74.576994] PHYS_OFFSET: 0x80000000 [ 74.580469] CPU features: 0x000042c1,a3302e42 [ 74.584813] Memory Limit: none [ 74.587902] ---[ end Kernel panic - not syncing: Oops: Fatal exception ]--- -- Best Regards, Yi Zhang
