http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 Roman Bysh changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rb03884@gmail.com Found By|--- |Community User Target Milestone|--- |Leap 42.3 Severity|Normal |Major -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c2 --- Comment #2 from Roman Bysh --- (In reply to Wolfgang Bauer from comment #1)

Sorry, I don't think this is "Major".

But I'll try to reproduce if I find the time...

You may want to report it upstream at http://bugs.kde.org/ meanwhile though.

Yeah. I should have kept it as minor. Was there an update in the last day or two? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c4 Wolfgang Bauer changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CONFIRMED --- Comment #4 from Wolfgang Bauer --- For the record, I can reproduce the crash on a standard 42.3 install in vmware, and on my 42.2 system with Plasma 5.10.3. (so it's likely an upstream problem) It only happens if the panel has a notification applet though. (the backtrace does point to that) I think it's related to the notification that Plasma shows when you remove a panel. This is displayed by the to-be-removed (already removed?) panel/applet too, just before Plasma crashes. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c6 --- Comment #6 from Wolfgang Bauer --- Also, the crash only seems to happen if you actively close the notification. If I wait for it to timeout, Plasma doesn't crash here. (although it likely crashes later if you add/remove another panel) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c9 Wolfgang Bauer changed: What |Removed |Added ---------------------------------------------------------------------------- Status|CONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #9 from Wolfgang Bauer --- The upstream fix has been submitted to TW and 42.3, and it no longer crashes here. Standard 42.2 seems not to be affected (maybe because it has older KDE Frameworks), at least I can't reproduce the crash there. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c11 --- Comment #11 from Roman Bysh --- Wolfgang, The problem has not been resolved completely. When I delete a panel, I can see the desktop yet my hard drive light stays on as if the "ksmserver" is searching for files over several minutes. I pressed cntrl+alt+backspace several times to get out. The keyboard stops working because the "ksmserver" is searching for files and file entries. I am uploading my .xsessions-error-:0 file. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c13 --- Comment #13 from Roman Bysh --- Created attachment 733048 --> http://bugzilla.opensuse.org/attachment.cgi?id=733048&action=edit .xsessions-errors-:0 Check for ksmserver searching. It's too bad that we cannot see the time on the left side as shown in boot.log -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c15 --- Comment #15 from Roman Bysh --- Wolfgang, Please disregard my last comments. It has nothing to do with the ksmserver. I just installed Build 330 using a USB thumb drive. Once I finished installing Leap 42.3 the system booted up to my plasma workspace. I deleted the "Default openSUSE panel", then right-clicked on the screen and selected to add the openSUSE panel back again. I checked dmesg first. It shows: plasmashell invoked oom-killer: gfp_mask=0x1400840(GFP_NOFS|__GFP_NOFAIL), nodemask=0, order=0, oom_score_adj=0 [ 209.645176] plasmashell cpuset=/ mems_allowed=0 [ 209.645180] CPU: 3 PID: 2641 Comm: plasmashell Tainted: G W O 4.4.76-1-default #1 [ 209.645181] Hardware name: System manufacturer P5Q/P5Q, BIOS 2209 03/11/2010 [ 209.645190] 0000000000000000 ffffffff81339d97 ffff880216d37508 0000000000000000 [ 209.645194] ffffffff8120b90e 0000000000000000 0000000000000000 ffffffff811491fa [ 209.645197] 0000000000000002 0000000001320122 ffff88023ffd21e0 0000000000000206 [ 209.645199] Call Trace: [ 209.645213] [<ffffffff81019f29>] dump_trace+0x59/0x320 [ 209.645218] [<ffffffff8101a2ea>] show_stack_log_lvl+0xfa/0x180 [ 209.645221] [<ffffffff8101b091>] show_stack+0x21/0x40 [ 209.645224] [<ffffffff81339d97>] dump_stack+0x5c/0x85 [ 209.645234] [<ffffffff8120b90e>] dump_header+0x82/0x231 [ 209.645240] [<ffffffff811991f2>] oom_kill_process+0x222/0x410 [ 209.645247] [<ffffffff811998d8>] out_of_memory+0x4a8/0x4c0 [ 209.645254] [<ffffffff8119dfd8>] __alloc_pages_nodemask+0xa48/0xbc0 [ 209.645260] [<ffffffff811e6d4f>] alloc_pages_current+0x7f/0x100 [ 209.645264] [<ffffffff81196480>] pagecache_get_page+0x50/0x1c0 [ 209.645305] [<ffffffffa0511a02>] alloc_extent_buffer+0x112/0x3a0 [btrfs] [ 209.645330] [<ffffffffa04e443b>] read_tree_block+0x1b/0x50 [btrfs] [ 209.645347] [<ffffffffa04c22d5>] read_block_for_search.isra.32+0x125/0x320 [btrfs] [ 209.645370] [<ffffffffa04c43ec>] btrfs_search_slot+0x3ac/0x970 [btrfs] [ 209.645389] [<ffffffffa04de3de>] btrfs_lookup_csum+0x3e/0x130 [btrfs] [ 209.645412] [<ffffffffa04de6c8>] __btrfs_lookup_bio_sums.isra.7+0x1f8/0x530 [btrfs] [ 209.645430] [<ffffffffa04dec52>] btrfs_lookup_bio_sums+0x32/0x40 [btrfs] [ 209.645449] [<ffffffffa04efbf0>] btrfs_submit_bio_hook+0xa0/0x190 [btrfs] [ 209.645471] [<ffffffffa050b037>] submit_one_bio+0x67/0x90 [btrfs] [ 209.645492] [<ffffffffa050e974>] submit_extent_page.isra.42+0x134/0x290 [btrfs] [ 209.645513] [<ffffffffa050f898>] __do_readpage+0x2c8/0x960 [btrfs] [ 209.645533] [<ffffffffa0510334>] __extent_readpages.constprop.46+0x304/0x330 [btrfs] [ 209.645554] [<ffffffffa05112f6>] extent_readpages+0x156/0x1a0 [btrfs] [ 209.645560] [<ffffffff811a2a1d>] __do_page_cache_readahead+0x18d/0x210 [ 209.645563] [<ffffffff81197efb>] filemap_fault+0x38b/0x450 [ 209.645570] [<ffffffff811c1941>] __do_fault+0x61/0xe0 [ 209.645573] [<ffffffff811c4bb1>] handle_pte_fault+0x781/0x1530 [ 209.645582] [<ffffffff811c6d7f>] handle_mm_fault+0x2df/0x630 [ 209.645587] [<ffffffff8106794f>] __do_page_fault+0x23f/0x4e0 [ 209.645592] [<ffffffff81067c1b>] do_page_fault+0x2b/0x70 [ 209.645597] [<ffffffff81632808>] page_fault+0x28/0x30 [ 209.647420] DWARF2 unwinder stuck at page_fault+0x28/0x30 [ 209.647421] Leftover inexact backtrace: I have uploaded dmesg for you to peruse. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c17 --- Comment #17 from Roman Bysh --- Follow Up I deleted and added the Default panel, Empty panel and Application Menu Bar without incident. When I right-click and add the Default openSUSE Panel after a several seconds the hard drive light goes on for several seconds. Dmesg2 is telling me: Look at the time: [707.487852] fuse init (API version 7.23) [748.595815] perf interrupt took too long (2518 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 [ 2429.957468] plasmashell invoked oom-killer: gfp_mask=0x14280ca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO), nodemask=0, order=0, oom_score_adj=0 [2429.957473] plasmashell cpuset=/ mems_allowed=0 [2429.957478] CPU: 1 PID: 2015 Comm: plasmashell Tainted: G O 4.4.76-1-default #1 [2429.957480] Hardware name: System manufacturer P5Q/P5Q, BIOS 2209 03/11/2010 [2429.957483] 0000000000000000 ffffffff81339d97 ffff880221473cd8 0000000000000000 [2429.957484] ffffffff8120b90e 0000000000000000 0000000000000000 ffffffff811491fa [2429.957486] 0000000000000002 [2429.957488] 0000000001320122 ffff88023ffd21e0 0000000000000206 [2429.957489] Call Trace: [2429.957503] [<ffffffff81019f29>] dump_trace+0x59/0x320 [2429.957507] [<ffffffff8101a2ea>] show_stack_log_lvl+0xfa/0x180 [2429.957511] [<ffffffff8101b091>] show_stack+0x21/0x40 [2429.957514] [<ffffffff81339d97>] dump_stack+0x5c/0x85 [2429.957519] [<ffffffff8120b90e>] dump_header+0x82/0x231 [2429.957524] [<ffffffff811991f2>] oom_kill_process+0x222/0x410 [2429.957531] [<ffffffff811998d8>] out_of_memory+0x4a8/0x4c0 [2429.957538] [<ffffffff8119e128>] __alloc_pages_nodemask+0xb98/0xbc0 [2429.957543] [<ffffffff811e8af4>] alloc_pages_vma+0xa4/0x220 [2429.957548] [<ffffffff811c51a7>] handle_pte_fault+0xd77/0x1530 [2429.957552] [<ffffffff811c6d7f>] handle_mm_fault+0x2df/0x630 [2429.957556] [<ffffffff8106794f>] __do_page_fault+0x23f/0x4e0 [2429.957561] [<ffffffff81067c1b>] do_page_fault+0x2b/0x70 [2429.957566] [<ffffffff81632808>] page_fault+0x28/0x30 [2429.959385] DWARF2 unwinder stuck at page_fault+0x28/0x30 [2429.959387] Leftover inexact backtrace: Perhaps this a bug in the kernel started by plasmashell invoked oom-killer? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 Roman Bysh changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Plasma shell crashes every |Plasma shell crashes every |time the panel is removed |time the Default openSUSE |from the plasma desktop |panel is removed and added | |back to the plasma desktop -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c20 --- Comment #20 from Wolfgang Bauer --- (In reply to Roman Bysh from comment #15)

I checked dmesg first. It shows:

plasmashell invoked oom-killer: gfp_mask=0x1400840(GFP_NOFS|__GFP_NOFAIL), nodemask=0, order=0, oom_score_adj=0

This means that you ran out of memory. Might explain the freeze with ongoing disk activity you mentioned earlier, the system may have been swapping. Doesn't look related to the original problem though IMHO. We do have other bug reports about plasmashell using huge amounts of RAM and CPU in certain cases. One culprit seems to be the wallpaper slideshow, so if you use this try to set a static background image instead. Though that seems to be a problem that started with Qt 5.9 IIRC. The backtrace mentions btrfs, so maybe btrfs balance is involved here too or maybe even the cause. (In reply to Roman Bysh from comment #16)

It also showed that "xembedsniproxy" segfaulted.

That's definitely unrelated to the original problem, or even Plasma at all. Without a backtrace (preferably with debug packages installed) it's impossible to tell what the problem may be though. (In reply to Roman Bysh from comment #18)

I deleted and added the Default panel, Empty panel and Application Menu Bar without incident.

When I right-click and add the Default openSUSE Panel after a several seconds the hard drive light goes on for several seconds.

Again sounds much different from the original problem. So the new problem happens if you *add* a panel? And only when you add the "Default openSUSE Panel"? I don't think that one is any different from the standard "Default Panel"... Does it also happen if you do *not* remove a panel before? I'll try to reproduce, but I think I tried that already too when I tested earlier. One additional note though: I see in your dmesg logs that you are using nouveau. Maybe installing the nvidia driver would help? (probably not if it is a btrfs problem of course) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c22 --- Comment #22 from Roman Bysh --- Wolfgang, I reinstalled 42.3 using ext4 and the same problem appeared. I ran a memory check on my RAM and CPU (Q6600) and it passed so I thought about changing the kernel. I believe the kernel 4.4.76 was the problem. I downloaded kernel 4.4.77-3.g855a1f8-default and installed it. Next, I repeated the same steps with removing and adding the panels. The light on my hard drive did not stay on and I did not run out of memory!! The problem was resolved with kernel 4.4.77-3.g855a1f8-default. We can mark this bug as resolved. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1046500 http://bugzilla.opensuse.org/show_bug.cgi?id=1046500#c24 --- Comment #24 from Wolfgang Bauer --- (In reply to Roman Bysh from comment #23)

There was a bug in kernel 4.4.76-1 default with Build 330.

Strange, because my last tests were in fact with kernel 4.4.76-1... But whatever. Thanks for the followup! -- You are receiving this mail because: You are on the CC list for the bug.