Comment 25 for bug 1885031

Hey Martin.

The issues reported on comment 1 and commment 24 have different stack trace signatures, and do not seem to be the same issue at all.

I'll thus mark this bug as Invalid as apparently you couldn't reproduce the original issue anymore.

If the new issue is still present with the latest 5.4 kernel in -updates, please feel free to report a new bug.

Thank you!

...

comment 1:

Jun 24 18:56:43 MartoBeast kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000
Jun 24 18:56:43 MartoBeast kernel: #PF: supervisor write access in kernel mode
Jun 24 18:56:43 MartoBeast kernel: #PF: error_code(0x0002) - not-present page
Jun 24 18:56:43 MartoBeast kernel: PGD 0 P4D 0
Jun 24 18:56:43 MartoBeast kernel: Oops: 0002 [#1] SMP NOPTI
Jun 24 18:56:43 MartoBeast kernel: CPU: 4 PID: 114660 Comm: sshd Tainted: P OE 5.4.0-37-generic #41-Ubuntu
Jun 24 18:56:43 MartoBeast kernel: Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS ELITE/X570 AORUS ELITE, BIOS F11 12/06/2019
Jun 24 18:56:43 MartoBeast kernel: RIP: 0010:__rb_erase_color+0x1aa/0x280
...
Jun 24 18:56:43 MartoBeast kernel: Call Trace:
Jun 24 18:56:43 MartoBeast kernel: vma_interval_tree_remove+0x1a0/0x2b0
Jun 24 18:56:43 MartoBeast kernel: __remove_shared_vm_struct+0x32/0x40
Jun 24 18:56:43 MartoBeast kernel: unlink_file_vma+0x41/0x60
Jun 24 18:56:43 MartoBeast kernel: free_pgtables+0x9b/0xf0
Jun 24 18:56:43 MartoBeast kernel: exit_mmap+0xc7/0x1b0
Jun 24 18:56:43 MartoBeast kernel: mmput+0x5d/0x130
Jun 24 18:56:43 MartoBeast kernel: do_exit+0x2fd/0xac0
Jun 24 18:56:43 MartoBeast kernel: ? kill_something_info+0x145/0x170
Jun 24 18:56:43 MartoBeast kernel: do_group_exit+0x47/0xb0
Jun 24 18:56:43 MartoBeast kernel: __x64_sys_exit_group+0x18/0x20
Jun 24 18:56:43 MartoBeast kernel: do_syscall_64+0x57/0x190
Jun 24 18:56:43 MartoBeast kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
Jun 24 18:56:43 MartoBeast kernel: RIP: 0033:0x7f52319de136

comment 24:

Aug 21 00:04:56 MartoBeast kernel: BUG: unable to handle page fault for address: 0000000900000b64
Aug 21 00:04:56 MartoBeast kernel: #PF: supervisor write access in kernel mode
Aug 21 00:04:56 MartoBeast kernel: #PF: error_code(0x0002) - not-present page
Aug 21 00:04:56 MartoBeast kernel: PGD 0 P4D 0
Aug 21 00:04:56 MartoBeast kernel: Oops: 0002 [#3] SMP NOPTI
Aug 21 00:04:56 MartoBeast kernel: CPU: 3 PID: 4610 Comm: threaded-ml Tainted: P D OE 5.4.0-44-generic #48-Ubuntu
Aug 21 00:04:56 MartoBeast kernel: Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS ELITE/X570 AORUS ELITE, BIOS F20b 07/02/2020
Aug 21 00:04:56 MartoBeast kernel: RIP: 0010:_raw_spin_lock_irqsave+0x23/0x40
...
Aug 21 00:04:56 MartoBeast kernel: Call Trace:
Aug 21 00:04:56 MartoBeast kernel: try_to_wake_up+0x4e/0x6a0
Aug 21 00:04:56 MartoBeast kernel: ? poll_select_finish+0x210/0x210
Aug 21 00:04:56 MartoBeast kernel: ? ttwu_do_wakeup+0x10d/0x150
Aug 21 00:04:56 MartoBeast kernel: default_wake_function+0x12/0x20
Aug 21 00:04:56 MartoBeast kernel: pollwake+0x72/0x90
Aug 21 00:04:56 MartoBeast kernel: ? wake_up_q+0x70/0x70
Aug 21 00:04:56 MartoBeast kernel: __wake_up_common+0x7e/0x140
Aug 21 00:04:56 MartoBeast kernel: __wake_up_locked_key+0x1b/0x20
Aug 21 00:04:56 MartoBeast kernel: eventfd_write+0xd3/0x230
Aug 21 00:04:56 MartoBeast kernel: ? wake_up_q+0x70/0x70
Aug 21 00:04:56 MartoBeast kernel: __vfs_write+0x1b/0x40
Aug 21 00:04:56 MartoBeast kernel: vfs_write+0xb9/0x1a0
Aug 21 00:04:56 MartoBeast kernel: ksys_write+0x67/0xe0
Aug 21 00:04:56 MartoBeast kernel: __x64_sys_write+0x1a/0x20
Aug 21 00:04:56 MartoBeast kernel: do_syscall_64+0x57/0x190
Aug 21 00:04:56 MartoBeast kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 21 00:04:56 MartoBeast kernel: RIP: 0033:0x7fd41a6412cf