Wakko Warner wrote: > Wakko Warner wrote: > > Bart Van Assche wrote: > > > On Sat, 2018-03-31 at 18:12 -0400, Wakko Warner wrote: > > > > Richard Weinberger wrote: > > > > > On Sat, Mar 31, 2018 at 3:59 AM, Wakko Warner <wakko@xxxxxxxxxxxx> wrote: > > > > > > I reported this before but noone responded. > > > > > > > > > > Because you're sending only to LKML. > > > > > CC'ing storage folks. > > > > > > > > Thank you. I wasn't sure who I needed to send it to. > > > > > > Can you share the output of lsscsi? I would like to know whether or not you > > > are using a (S)ATA CDROM. > > > > >From the target: > > [4:0:0:0] cd/dvd ATAPI iHAS224 B GL05 /dev/sr0 > > [5:0:0:0] cd/dvd ATAPI iHAS422 8 4L11 /dev/sr1 > > [6:0:0:0] cd/dvd PBDS DVD+-RW DH-16W1S 2D14 /dev/sr2 > > > > >From the initiator: > > [19:0:0:0] cd/dvd ATAPI iHAS224 B GL05 /dev/sr1 > > [19:0:0:1] cd/dvd ATAPI iHAS422 8 4L11 /dev/sr2 > > [19:0:0:2] cd/dvd PBDS DVD+-RW DH-16W1S 2D14 /dev/sr3 > > > > > > I tested 4.14.32 last night with the same oops. 4.9.91 works fine. > > >From the initiator, if I do cat /dev/sr1 > /dev/null it works. If I mount > > /dev/sr1 and then do find -type f | xargs cat > /dev/null the target > > crashes. I'm using the builtin iscsi target with pscsi. I can burn from > > the initiator with out problems. I'll test other kernels between 4.9 and > > 4.14. > > So I've tested 4.x.y where x one of 10 11 12 14 15 and y is the latest patch > (except for 4.15 which was 1 behind) > Each of these kernels crash within seconds or immediate of doing find -type > f | xargs cat > /dev/null from the initiator. I tried 4.10.0. It doesn't completely lockup the system, but the device that was used hangs. So from the initiator, it's /dev/sr1 and from the target it's /dev/sr0. Attempting to read /dev/sr0 after the oops causes the process to hang in D state. Here's the oops. There was also another line that was not seen in the newer kernels. [ 323.105044] ------------[ cut here ]------------ [ 323.105057] WARNING: CPU: 0 PID: 0 at /usr/src/linux/dist/4.10/drivers/scsi/scsi_lib.c:1043 scsi_init_io+0x143/0x1f0 [scsi_mod] [ 323.105058] Modules linked in: iscsi_target_mod af_packet tcm_loop vhost_scsi vhost target_core_file target_core_iblock target_core_pscsi target_core_mod nfsd exportfs dummy bridge stp llc ib_iser rdma_cm iw_cm ib_cm ib_core ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi netconsole configfs sr_mod cdrom sd_mod sg adt7475 hwmon_vid coretemp x86_pkg_temp_thermal kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc snd_hda_codec_realtek snd_hda_codec_generic nouveau video led_class drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea ttm drm snd_hda_intel agpgart snd_hda_codec snd_hda_core snd_pcm_oss igb snd_mixer_oss aesni_intel snd_pcm aes_x86_64 hwmon snd_timer crypto_simd i2c_algo_bit mptsas snd glue_helper [ 323.105089] mpt3sas i2c_core mptscsih soundcore ahci mptbase raid_class libahci scsi_transport_sas libata scsi_mod button wmi hed unix [ 323.105097] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.10.0 #1 [ 323.105098] Hardware name: Dell Inc. Precision T5610/0WN7Y6, BIOS A16 02/05/2018 [ 323.105100] Call Trace: [ 323.105101] <IRQ> [ 323.105105] ? dump_stack+0x46/0x5a [ 323.105107] ? __warn+0xb4/0xd0 [ 323.105110] ? scsi_init_io+0x143/0x1f0 [scsi_mod] [ 323.105113] ? scsi_setup_cmnd+0x4c/0x140 [scsi_mod] [ 323.105115] ? scsi_prep_fn+0xe3/0x170 [scsi_mod] [ 323.105118] ? swiotlb_unmap_sg_attrs+0x44/0x60 [ 323.105119] ? blk_peek_request+0x130/0x200 [ 323.105122] ? scsi_request_fn+0x2b/0x510 [scsi_mod] [ 323.105124] ? __blk_run_queue+0x2a/0x40 [ 323.105126] ? blk_run_queue+0x1c/0x30 [ 323.105129] ? scsi_run_queue+0x229/0x2b0 [scsi_mod] [ 323.105131] ? scsi_io_completion+0x3d6/0x5c0 [scsi_mod] [ 323.105133] ? blk_done_softirq+0x67/0x80 [ 323.105135] ? __do_softirq+0xdb/0x200 [ 323.105137] ? irq_exit+0xa3/0xb0 [ 323.105139] ? do_IRQ+0x45/0xc0 [ 323.105141] ? common_interrupt+0x7c/0x7c [ 323.105142] </IRQ> [ 323.105145] ? cpuidle_enter_state+0x144/0x1f0 [ 323.105146] ? cpuidle_enter_state+0x139/0x1f0 [ 323.105148] ? do_idle+0xd3/0x190 [ 323.105150] ? cpu_startup_entry+0x14/0x20 [ 323.105152] ? start_kernel+0x391/0x399 [ 323.105154] ? start_cpu+0x14/0x14 [ 323.105155] ---[ end trace f38cc734e4921bdc ]--- [ 323.105157] blk_peek_request: bad return=-22
