This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1822871
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
--
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/1822871
Title:
enabling ftrace on Hi1620 CS causes an Oops
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
Attempting to enable the function tracer causes an Oops. This impacts the
current disco kernel, as well as latest upstream
(@5e7a8ca319268a70a6c7c3c1fde5bea38e1e5539).
This is 100% reproducible on D06 CS systems, but not reproducible on
D06 ES systems (the previous silicon rev).
[Test Case]
$ echo function | sudo tee /sys/kernel/debug/tracing/current_tracer
[ 3125.651453] kernel BUG at arch/arm64/kernel/insn.c:1325!
[ 3125.656766] Internal error: Oops - BUG: 0 [#1] SMP
[ 3125.661551] Modules linked in: nls_iso8859_1 ipmi_ssif joydev input_leds
tpm_tis_spi hns_roce_hw_v2 hns_roce ib_uverbs spi_dw_mmio ipmi_si spi_dw
ipmi_devintf ipmi_msghandler cppc_cpufreq sch_fq_codel 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_compress raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1
raid0 multipath linear ses enclosure marvell aes_ce_blk aes_ce_cipher hibmc_drm
hid_generic ttm crct10dif_ce drm_kms_helper ghash_ce sha2_ce syscopyarea
sha256_arm64 sysfillrect ixgbe igb sha1_ce hns3 sysimgblt usbhid fb_sys_fops
hisi_sas_v3_hw hclge i2c_algo_bit xfrm_algo hisi_sas_main mdio hid drm hnae3
libsas ahci scsi_transport_sas hinic gpio_dwapb aes_neon_bs aes_neon_blk
crypto_simd cryptd aes_arm64
[ 3125.736544] CPU: 124 PID: 3306 Comm: tee Not tainted 5.0.0-rc4+ #12
[ 3125.742802] Hardware name: Huawei TaiShan 2280 V2/BC82AMDA, BIOS TA BIOS
2280-A CS V2.16.01 03/16/2019
[ 3125.752099] pstate: 00400009 (nzcv daif +PAN -UAO)
[ 3125.756893] pc : aarch64_insn_adrp_get_offset+0x34/0x38
[ 3125.762111] lr : plt_entries_equal.part.3+0x40/0x80
[ 3125.766979] sp : ffff00002837b9f0
[ 3125.770286] x29: ffff00002837b9f0 x28: ffffbef4fd20d880
[ 3125.775591] x27: 0000000000000000 x26: 0000000000000000
[ 3125.780896] x25: 0000ffffdea2a7e8 x24: ffff3dceb8413000
[ 3125.786200] x23: 0000000000000002 x22: ffff3dce9d2289a4
[ 3125.791504] x21: ffff00002837ba8c x20: ffff00002837b000
[ 3125.796808] x19: ffff3dce9d228000 x18: 0000000000000000
[ 3125.802112] x17: 0000000000000000 x16: ffff3dceb7742780
[ 3125.807416] x15: ffff3dceb7ce7c38 x14: 0000000000000001
[ 3125.812720] x13: ffffbef50bb9e188 x12: 0000000000000000
[ 3125.818023] x11: ffff7efba3e79608 x10: 0000000000000a70
[ 3125.823327] x9 : ffff3dceb6deeacc x8 : 0000000000000000
[ 3125.828631] x7 : 0000000000000005 x6 : ffff3dceb8413f10
[ 3125.833935] x5 : 00000000002b3000 x4 : ffff3dceb6f4f4b8
[ 3125.839239] x3 : 0000000000000000 x2 : 0000000090000000
[ 3125.844543] x1 : 0000000000000000 x0 : 0000000000000000
[ 3125.849850] Process tee (pid: 3306, stack limit = 0x00000000262bb476)
[ 3125.856281] Call trace:
[ 3125.858723] aarch64_insn_adrp_get_offset+0x34/0x38
[ 3125.863593] plt_entries_equal.part.3+0x40/0x80
[ 3125.868115] plt_entries_equal+0x5c/0x70
[ 3125.872031] ftrace_make_call+0xf0/0x150
[ 3125.875950] __ftrace_replace_code+0xe8/0xf8
[ 3125.880212] ftrace_replace_code+0x64/0xc0
[ 3125.884301] ftrace_modify_all_code+0xb0/0x148
[ 3125.888738] arch_ftrace_update_code+0x10/0x18
[ 3125.893174] ftrace_run_update_code+0x20/0x70
[ 3125.897524] ftrace_startup_enable+0x4c/0x58
[ 3125.901788] ftrace_startup+0xa4/0x140
[ 3125.905531] register_ftrace_function+0x64/0x80
[ 3125.910059] function_trace_init+0x50/0x98
[ 3125.914149] tracing_set_tracer+0xf4/0x1c0
[ 3125.918238] tracing_set_trace_write+0x10c/0x168
[ 3125.922852] __vfs_write+0x60/0x1a8
[ 3125.926333] vfs_write+0xac/0x1b8
[ 3125.929641] ksys_write+0x6c/0xd8
[ 3125.932949] __arm64_sys_write+0x24/0x30
[ 3125.936866] el0_svc_common+0x78/0x120
[ 3125.940608] el0_svc_handler+0x38/0x78
[ 3125.944349] el0_svc+0x8/0xc
[ 3125.947224] Code: 97fffb33 53144c00 a8c17bfd d65f03c0 (d4210000)
[ 3125.953312] ---[ end trace 0872d3e5933385e2 ]---
[Fix]
TBD
[Regression Risk]
TBD
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1822871/+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
