LKFT started testing KCSAN enabled kernel from the linux next tree.
Here we have found BUG: KCSAN: data-race in mutex_spin_on_owner
and several more KCSAN BUGs.
This report is from an x86_64 machine clang-11 linux next 20201201.
Since we are running for the first time we do not call this regression.
[ 4.745161] usbcore: registered new interface driver cdc_ether
[ 4.751281] ==================================================================
[ 4.756653] usbcore: registered new interface driver net1080
[ 4.752139] BUG: KCSAN: data-race in mutex_spin_on_owner+0xef/0x1b0
[ 4.752139]
[ 4.752139] race at unknown origin, with read to 0xffff90a80098b034
of 4 bytes by task 252 on cpu 1:
[ 4.769781] usbcore: registered new interface driver cdc_subset
[ 4.752139] mutex_spin_on_owner+0xef/0x1b0
[ 4.752139] __mutex_lock+0x69d/0x820
[ 4.752139] __mutex_lock_slowpath+0x13/0x20
[ 4.781657] usbcore: registered new interface driver zaurus
[ 4.752139] mutex_lock+0x9d/0xb0
[ 4.752139] ata_eh_acquire+0x2e/0x80
[ 4.752139] ata_msleep+0x91/0xa0
[ 4.792317] usbcore: registered new interface driver cdc_ncm
[ 4.752139] sata_link_debounce+0x1ad/0x2f0
[ 4.752139] sata_link_resume+0x32f/0x4a0
[ 4.752139] sata_link_hardreset+0x456/0x640
[ 4.802369] usbcore: registered new interface driver r8153_ecm
[ 4.752139] ahci_do_hardreset+0x177/0x230
[ 4.752139] ahci_hardreset+0x23/0x40
[ 4.752139] ata_eh_reset+0x91e/0x1bb0
[ 4.810641] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.810482] ata_eh_recover+0x79b/0x2bd0
[ 4.810482] sata_pmp_error_handler+0x7d1/0x1340
[ 4.810482] ahci_error_handler+0x7c/0xc0
[ 4.819247] ehci-pci: EHCI PCI platform driver
[ 4.810482] ata_scsi_port_error_handler+0x708/0xd30
[ 4.810482] ata_scsi_error+0x128/0x160
[ 4.826321] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.810482] scsi_error_handler+0x26d/0x700
[ 4.810482] kthread+0x20b/0x220
[ 4.836069] ohci-pci: OHCI PCI platform driver
[ 4.810482] ret_from_fork+0x22/0x30
[ 4.810482]
[ 4.844397] uhci_hcd: USB Universal Host Controller Interface driver
[ 4.810482] Reported by Kernel Concurrency Sanitizer on:
[ 4.810482] CPU: 1 PID: 252 Comm: scsi_eh_1 Not tainted
5.10.0-rc6-next-20201201 #2
[ 4.810482] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.2 05/23/2018
[ 4.855343] xhci_hcd 0000:00:14.0: xHCI Host Controller
[ 4.810482] ==================================================================
metadata:
git_repo: https://gitlab.com/aroxell/lkft-linux-next
target_arch: x86
toolchain: clang-11
git_describe: next-20201201
kernel_version: 5.10.0-rc6
download_url: https://builds.tuxbuild.com/1l8eiWgGMi6W4aDobjAAlOleFVl/
full test log link,
https://lkft.validation.linaro.org/scheduler/job/2002643#L831
--
Linaro LKFT
https://lkft.linaro.org
