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日志如下：
[43626.021018][ T932] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43626.021023][T2732354] runtest TestEL_Huge_TLB testEL_Huge_TLB_FUN.001
[43626.021026][T2732359] runtest testEL_Netlink_ip testEL_Netlink_ip_FUN.001
[43626.021028][T2732363] runtest testEL_OSSERVICECHECK testEL_OSSERVICECHECK_FUN.002
[43626.021030][T2732366] runtest TestEL_repo testEL_repo_create_FUN.006
[43626.021031][T2732368] runtest testEL_SYS_TIME testEL_SYS_TIME_ABN.006
[43626.021034][ T932] task:dd state:D stack: 0 pid:2020241 ppid: 1 flags:0x00000200
[43626.021039][T2732372] runtest testEL_vmap testEL_vmap_PFM.001
[43626.021041][ T932] Call trace:
[43626.021046][ T932] __switch_to+0x7c/0xbc
[43626.021052][ T932] __schedule+0x340/0x700
[43626.021054][ T932] schedule+0x50/0xe0
[43626.021058][ T932] wb_wait_for_completion+0x94/0xc0
[43626.021060][ T932] __writeback_inodes_sb_nr+0x94/0xd0
[43626.021062][ T932] try_to_writeback_inodes_sb+0x64/0x80
[43626.021114][ T932] ext4_nonda_switch+0x98/0xa0 [ext4]
[43626.021129][ T932] ext4_da_write_begin+0x6c/0x310 [ext4]
[43626.021133][ T932] generic_perform_write+0xb0/0x1d0
[43626.021143][ T932] ext4_buffered_write_iter+0xa4/0x184 [ext4]
[43626.021153][ T932] ext4_file_write_iter+0x40/0x180 [ext4]
[43626.021156][ T932] new_sync_write+0xec/0x18c
[43626.021159][ T932] vfs_write+0x214/0x2ac
[43626.021161][ T932] ksys_write+0x70/0xfc
[43626.021162][ T932] __arm64_sys_write+0x24/0x30
[43626.021164][ T932] invoke_syscall+0x50/0x11c
[43626.021165][ T932] el0_svc_common.constprop.0+0x158/0x164
[43626.021167][ T932] do_el0_svc+0x2c/0x9c
[43626.021169][ T932] el0_svc+0x20/0x30
[43626.021170][ T932] el0_sync_handler+0xb0/0xb4
[43626.021172][ T932] el0_sync+0x160/0x180
[43626.021175][ T932] INFO: task dd:2020248 blocked for more than 120 seconds.
[43626.021176][ T932] Tainted: G W OEL 5.10.0-2203sp2.aarch64 #2
[43626.021178][ T932] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43626.021179][ T932] task:dd state:D stack: 0 pid:2020248 ppid: 1 flags:0x00000200
[43626.021181][ T932] Call trace:
[43626.021182][ T932] __switch_to+0x7c/0xbc
[43626.021184][ T932] __schedule+0x340/0x700
[43626.021186][ T932] schedule+0x50/0xe0
[43626.021188][ T932] wb_wait_for_completion+0x94/0xc0
[43626.021191][ T932] __writeback_inodes_sb_nr+0x94/0xd0
[43626.021193][ T932] try_to_writeback_inodes_sb+0x64/0x80
[43626.021203][ T932] ext4_nonda_switch+0x98/0xa0 [ext4]
[43626.021212][ T932] ext4_da_write_begin+0x6c/0x310 [ext4]
[43626.021215][ T932] generic_perform_write+0xb0/0x1d0
[43626.021225][ T932] ext4_buffered_write_iter+0xa4/0x184 [ext4]
[43626.021235][ T932] ext4_file_write_iter+0x40/0x180 [ext4]
[43626.021237][ T932] new_sync_write+0xec/0x18c
[43626.021238][ T932] vfs_write+0x214/0x2ac
[43626.021240][ T932] ksys_write+0x70/0xfc
[43626.021241][ T932] __arm64_sys_write+0x24/0x30
[43626.021242][ T932] invoke_syscall+0x50/0x11c
[43626.021243][ T932] el0_svc_common.constprop.0+0x158/0x164
[43626.021245][ T932] do_el0_svc+0x2c/0x9c
[43626.021246][ T932] el0_svc+0x20/0x30
[43626.021247][ T932] el0_sync_handler+0xb0/0xb4
[43626.021249][ T932] el0_sync+0x160/0x180
[43626.021253][ T932] INFO: task dd:2020360 blocked for more than 120 seconds.
[43626.021254][ T932] Tainted: G W OEL 5.10.0-2203sp2.aarch64 #2
[43626.021255][ T932] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43626.021256][ T932] task:dd state:D stack: 0 pid:2020360 ppid: 1 flags:0x00000200
[43626.021258][ T932] Call trace:
[43626.021260][ T932] __switch_to+0x7c/0xbc
[43626.021261][ T932] __schedule+0x340/0x700
[43626.021263][ T932] schedule+0x50/0xe0
[43626.021265][ T932] wb_wait_for_completion+0x94/0xc0
[43626.021267][ T932] __writeback_inodes_sb_nr+0x94/0xd0
[43626.021269][ T932] try_to_writeback_inodes_sb+0x64/0x80
[43626.021280][ T932] ext4_nonda_switch+0x98/0xa0 [ext4]
[43626.021289][ T932] ext4_da_write_begin+0x6c/0x310 [ext4]
[43626.021292][ T932] generic_perform_write+0xb0/0x1d0
[43626.021302][ T932] ext4_buffered_write_iter+0xa4/0x184 [ext4]
[43626.021313][ T932] ext4_file_write_iter+0x40/0x180 [ext4]
[43626.021314][ T932] new_sync_write+0xec/0x18c
[43626.021316][ T932] vfs_write+0x214/0x2ac
[43626.021319][ T932] ksys_write+0x70/0xfc
[43626.021320][ T932] __arm64_sys_write+0x24/0x30
[43626.021321][ T932] invoke_syscall+0x50/0x11c
[43626.021323][ T932] el0_svc_common.constprop.0+0x158/0x164
[43626.021324][ T932] do_el0_svc+0x2c/0x9c
[43626.021325][ T932] el0_svc+0x20/0x30
[43626.021326][ T932] el0_sync_handler+0xb0/0xb4
[43626.021327][ T932] el0_sync+0x160/0x180
[43626.021330][ T932] INFO: task cat:2020440 blocked for more than 120 seconds.
[43626.021331][ T932] Tainted: G W OEL 5.10.0-2203sp2.aarch64 #2
[43626.021333][ T932] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43626.021334][ T932] task:cat state:D stack: 0 pid:2020440 ppid: 1 flags:0x00000200
[43626.021336][ T932] Call trace:
[43626.021337][ T932] __switch_to+0x7c/0xbc
[43626.021339][ T932] __schedule+0x340/0x700
[43626.021341][ T932] schedule+0x50/0xe0
[43626.021344][ T932] wb_wait_for_completion+0x94/0xc0
[43626.021345][ T932] __writeback_inodes_sb_nr+0x94/0xd0
[43626.021348][ T932] try_to_writeback_inodes_sb+0x64/0x80
[43626.021357][ T932] ext4_nonda_switch+0x98/0xa0 [ext4]
[43626.021367][ T932] ext4_da_write_begin+0x6c/0x310 [ext4]
[43626.021370][ T932] generic_perform_write+0xb0/0x1d0
[43626.021378][ T932] ext4_buffered_write_iter+0xa4/0x184 [ext4]
[43626.021387][ T932] ext4_file_write_iter+0x40/0x180 [ext4]
[43626.021389][ T932] new_sync_write+0xec/0x18c
[43626.021391][ T932] vfs_write+0x214/0x2ac
[43626.021392][ T932] ksys_write+0x70/0xfc
[43626.021393][ T932] __arm64_sys_write+0x24/0x30
[43626.021394][ T932] invoke_syscall+0x50/0x11c
[43626.021395][ T932] el0_svc_common.constprop.0+0x158/0x164
[43626.021396][ T932] do_el0_svc+0x2c/0x9c
[43626.021397][ T932] el0_svc+0x20/0x30
[43626.021400][ T932] el0_sync_handler+0xb0/0xb4
[43626.021401][ T932] el0_sync+0x160/0x180
[43626.021403][ T932] INFO: task cat:2020460 blocked for more than 120 seconds.
[43626.021404][ T932] Tainted: G W OEL 5.10.0-2203sp2.aarch64 #2
[43626.021405][ T932] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[43626.021407][ T932] task:cat state:D stack: 0 pid:2020460 ppid: 1 flags:0x00000200
[43626.021409][ T932] Call trace:
[43626.021410][ T932] __switch_to+0x7c/0xbc
[43626.021412][ T932] __schedule+0x340/0x700
[43626.021413][ T932] schedule+0x50/0xe0
[43626.021416][ T932] rwsem_down_write_slowpath+0x3bc/0x6ac
[43626.021419][ T932] down_write+0x60/0x6c
[43626.021428][ T932] ext4_buffered_write_iter+0x4c/0x184 [ext4]
[43626.021438][ T932] ext4_file_write_iter+0x40/0x180 [ext4]
[43626.021439][ T932] new_sync_write+0xec/0x18c
[43626.021441][ T932] vfs_write+0x214/0x2ac
[43626.021442][ T932] ksys_write+0x70/0xfc
[43626.021443][ T932] __arm64_sys_write+0x24/0x30
[43626.021444][ T932] invoke_syscall+0x50/0x11c
[43626.021445][ T932] el0_svc_common.constprop.0+0x158/0x164
[43626.021446][ T932] do_el0_svc+0x2c/0x9c
[43626.021447][ T932] el0_svc+0x20/0x30
[43626.021448][ T932] el0_sync_handler+0xb0/0xb4
[43626.021449][ T932] el0_sync+0x160/0x180

关掉hung task panic复现中

这个问题后来修复了吗？怎么解决的

该问题一直未复现，缺乏有效信息，先关闭