Same thing since I upgraded to 4.15.0-151-generic on my laptop. Previously had 150+ days of uptime, now it crashes every few days, and up to 3 times a day.
Very similar behaviour than what Martin reported just above: when logging in to XFCE, it can crash easily, or when simply using the Desktop. When it happens, this is a hard freeze, the watchdog doesn't trigger (I waited for 1 hour), and even the sysrq keys no longer work (yes, these are enabled).
Hardware: DELL Latitude 5300.
To add some datapoints, here are my 2 last crash reports:
==> /var/crash/linux-image-4.15.0-151-generic.31533.crash <==
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Date: Fri Jul 23 15:41:43 2021
Failure: oops
OopsText:
BUG: Bad page map in process Renderer pte:8000009fb753c258 pmd:3993e9067
addr:00000000b8067c8b vm_flags:080000f9 anon_vma: (null) mapping:0000000073ae2b58 index:648
file:memfd:mozilla-ipc fault:shmem_fault mmap:shmem_mmap readpage: (null)
CPU: 0 PID: 5797 Comm: Renderer Not tainted 4.15.0-151-generic #157-Ubuntu
Hardware name: Dell Inc. Latitude 5300/0932VT, BIOS 1.8.1 12/16/2019
Call Trace:
Package: linux-image-4.15.0-151-generic 4.15.0-151.157
SourcePackage: linux
Tags: kernel-oops
Uname: Linux 4.15.0-151-generic x86_64
==> /var/crash/linux-image-4.15.0-151-generic.45463.crash <==
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Date: Fri Jul 23 15:41:42 2021
Failure: oops
OopsText:
BUG: Bad page cache in process Renderer pfn:2d5fe5
page:ffffed164b57f940 count:3 mapcount:1 mapping:ffff8fdc5041b488 index:0x648
flags: 0x17ffffc004002d(locked|referenced|uptodate|lru|swapbacked)
raw: 0017ffffc004002d ffff8fdc5041b488 0000000000000648 0000000300000000
raw: ffffed164d96dbe0 ffffed1650092820 0000000000000000 ffff8fdda9018000
page dumped because: still mapped when deleted
page->mem_cgroup:ffff8fdda9018000
CPU: 0 PID: 5797 Comm: Renderer Tainted: G B 4.15.0-151-generic #157-Ubuntu
Hardware name: Dell Inc. Latitude 5300/0932VT, BIOS 1.8.1 12/16/2019
Call Trace:
Package: linux-image-4.15.0-151-generic 4.15.0-151.157
SourcePackage: linux
Tags: kernel-oops
Uname: Linux 4.15.0-151-generic x86_64
Same thing since I upgraded to 4.15.0-151-generic on my laptop. Previously had 150+ days of uptime, now it crashes every few days, and up to 3 times a day.
Very similar behaviour than what Martin reported just above: when logging in to XFCE, it can crash easily, or when simply using the Desktop. When it happens, this is a hard freeze, the watchdog doesn't trigger (I waited for 1 hour), and even the sysrq keys no longer work (yes, these are enabled).
Hardware: DELL Latitude 5300.
To add some datapoints, here are my 2 last crash reports:
==> /var/crash/ linux-image- 4.15.0- 151-generic. 31533.crash <== 3c258 pmd:3993e9067 8067c8b vm_flags:080000f9 anon_vma: (null) mapping: 0000000073ae2b5 8 index:648 mozilla- ipc fault:shmem_fault mmap:shmem_mmap readpage: (null)
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Date: Fri Jul 23 15:41:43 2021
Failure: oops
OopsText:
BUG: Bad page map in process Renderer pte:8000009fb75
addr:00000000b
file:memfd:
CPU: 0 PID: 5797 Comm: Renderer Not tainted 4.15.0-151-generic #157-Ubuntu
Hardware name: Dell Inc. Latitude 5300/0932VT, BIOS 1.8.1 12/16/2019
Call Trace:
Package: linux-image- 4.15.0- 151-generic 4.15.0-151.157
SourcePackage: linux
Tags: kernel-oops
Uname: Linux 4.15.0-151-generic x86_64
==> /var/crash/ linux-image- 4.15.0- 151-generic. 45463.crash <== b57f940 count:3 mapcount:1 mapping: ffff8fdc5041b48 8 index:0x648 d(locked| referenced| uptodate| lru|swapbacked) mem_cgroup: ffff8fdda901800 0
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Date: Fri Jul 23 15:41:42 2021
Failure: oops
OopsText:
BUG: Bad page cache in process Renderer pfn:2d5fe5
page:ffffed164
flags: 0x17ffffc004002
raw: 0017ffffc004002d ffff8fdc5041b488 0000000000000648 0000000300000000
raw: ffffed164d96dbe0 ffffed1650092820 0000000000000000 ffff8fdda9018000
page dumped because: still mapped when deleted
page->
CPU: 0 PID: 5797 Comm: Renderer Tainted: G B 4.15.0-151-generic #157-Ubuntu
Hardware name: Dell Inc. Latitude 5300/0932VT, BIOS 1.8.1 12/16/2019
Call Trace:
Package: linux-image- 4.15.0- 151-generic 4.15.0-151.157
SourcePackage: linux
Tags: kernel-oops
Uname: Linux 4.15.0-151-generic x86_64