Hi!

> > I do have some oopses, but they seem to be different on each
> > boot. IIRC message was "scheduling?...on offline CPU?".
> > 
> > Any ideas? Does it work for you?
> 
> Seems that error is different on each try.
> 
> Now it is:
> 
> FS: Cannot open root device "sda4" or unknown-block(8,4): error -2
> (followed by panic, but it listed sda4 as avialbe partition)
> 
> Next try:
> 
> sched: Unexpected reschedule of offline CPU#0!
> WARNING: CPU: 1 PID: 1 at ...smp.c:128 native_smp_send_reschedule
> (Aha, that's what I seen before)
> 
> Next try:
> 
> sched: Unexpected reschedule of offline CPU#0!
> 
> Next try: I added "nosmp" on command line, and got
> 
> FS: Cannot open root device "sda4" or unknown-block(8,4): error -2
> (followed by panic, but it listed sda4 as avialbe partition)
> 
> Next try: with "l1tf=off nospectre_v2 nospec_store_bypass_disable"
> 
> FS: Cannot open root device "sda4" or unknown-block(8,4): error -2
> (followed by panic, but it listed sda4 as avialbe partition)

Next -0910 seems to boot ok... but when I hit the power button to
suspend the machine...  Full dmesg is in the attachment.

								Pavel

[   22.372485] netlink: 16 bytes leftover after parsing attributes in process `ip'.
[   22.372680] netlink: 16 bytes leftover after parsing attributes in process `ip'.
[  233.629560] wlan0: deauthenticating from 00:00:00:00:00:01 by local choice (Reason: 3=DEAUTH_LEAVING)
[  233.827466] PM: suspend entry (deep)
[  233.827478] PM: Syncing filesystems ... 
[  233.853369] netlink: 16 bytes leftover after parsing attributes in process `ip'.
[  233.853638] netlink: 16 bytes leftover after parsing attributes in process `ip'.
[  243.146818] INFO: task kworker/u4:6:1174 blocked for more than 120 seconds.
[  243.146836]       Not tainted 4.19.0-rc2-next-20180910 #157
[  243.146844] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  243.146854] kworker/u4:6    D    0  1174      2 0x80000000
[  243.146889] Workqueue: writeback wb_workfn (flush-8:0)
[  243.146903] Call Trace:
[  243.146917]  __schedule+0x390/0x7f0
[  243.146926]  schedule+0x29/0x70
[  243.146935]  io_schedule+0x10/0x40
[  243.146946]  __lock_page+0xd3/0x100
[  243.146955]  ? page_cache_tree_insert+0xb0/0xb0
[  243.146966]  mpage_prepare_extent_to_map+0x217/0x260
[  243.146976]  ? kmem_cache_alloc+0xd2/0xe0
[  243.146986]  ? ext4_init_io_end+0x13/0x30
[  243.146995]  ext4_writepages+0x2cf/0x6c0
[  243.147005]  ? writeback_sb_inodes+0x111/0x360
[  243.147015]  do_writepages+0x1d/0x70
[  243.147024]  __writeback_single_inode+0x2a/0x180
[  243.147033]  writeback_sb_inodes+0x1ea/0x360
[  243.147042]  __writeback_inodes_wb+0x7c/0xb0
[  243.147051]  wb_writeback+0x189/0x1a0
[  243.147060]  wb_workfn+0x14f/0x2d0
[  243.147069]  ? __lock_acquire.isra.25+0x4d3/0x8c0
[  243.147079]  process_one_work+0x17e/0x360
[  243.147087]  ? process_one_work+0x123/0x360
[  243.147096]  worker_thread+0x39/0x3b0
[  243.147105]  kthread+0xe7/0x120
[  243.147113]  ? process_one_work+0x360/0x360
[  243.147122]  ? kthread_park+0xa0/0xa0
[  243.147131]  ret_from_fork+0x2e/0x38
[  243.147177] INFO: task zeitgeist-daemo:3648 blocked for more than 120 seconds.
[  243.147185]       Not tainted 4.19.0-rc2-next-20180910 #157
[  243.147191] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  243.147198] zeitgeist-daemo D    0  3648      1 0x00000004
[  243.147210] Call Trace:
[  243.147219]  __schedule+0x390/0x7f0
[  243.147228]  schedule+0x29/0x70


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html