Comment # 1
on bug 102553
from mercuriete
Problem still happens in kernel 4.11.0 Why Instruction pointer is null? Do you need more feedback from me? Somebody with knowledge about kernel debugging can explain me the way to how create a good bug report? partial dmesg: [ 523.890285] BUG: unable to handle kernel NULL pointer dereference at (null) [ 523.890289] IP: (null) [ 523.890290] PGD 243e2f067 P4D 243e2f067 PUD 1e5127067 PMD 0 [ 523.890294] Oops: 0010 [#1] PREEMPT SMP [ 523.890295] Modules linked in: [ 523.890297] CPU: 0 PID: 6677 Comm: laptop_mode Not tainted 4.14.0-gentoo #2 [ 523.890298] Hardware name: TOSHIBA SATELLITE P50-B-11M/VG20SQ, BIOS 1.50 12/09/2014 [ 523.890299] task: ffff8802437764c0 task.stack: ffffc90003e38000 [ 523.890300] RIP: 0010: (null) [ 523.890301] RSP: 0018:ffffc90003e3bca0 EFLAGS: 00010202 [ 523.890302] RAX: ffffffff81eaa400 RBX: ffff88041c7c0000 RCX: 0000000000000078 [ 523.890303] RDX: 0000000000000078 RSI: 0000000000000007 RDI: ffff88041c7c0000 [ 523.890304] RBP: ffffc90003e3bd30 R08: 0000000000020000 R09: 0000000000018c04 [ 523.890304] R10: 0000000000000000 R11: ffff88041c7d8044 R12: 0000000000000000 [ 523.890305] R13: ffff88041c7d8000 R14: ffff88041c7d9988 R15: 0000000000000003 [ 523.890306] FS: 00007f013077af80(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000 [ 523.890307] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 523.890308] CR2: 0000000000000000 CR3: 00000002437c8006 CR4: 00000000001606f0 [ 523.890309] Call Trace: [ 523.890315] ? si_dpm_set_power_state+0xc96/0x1260 [ 523.890318] amdgpu_pm_compute_clocks+0x2ab/0x620 [ 523.890320] amdgpu_set_dpm_state+0x88/0x130 [ 523.890323] dev_attr_store+0x13/0x20 [ 523.890326] sysfs_kf_write+0x32/0x40 [ 523.890327] kernfs_fop_write+0x112/0x190 [ 523.890330] __vfs_write+0x32/0x150 [ 523.890333] ? __this_cpu_preempt_check+0x13/0x20 [ 523.890335] vfs_write+0xaf/0x180 [ 523.890337] SyS_write+0x50/0xc0 [ 523.890339] do_syscall_64+0x6f/0x1c0 [ 523.890342] entry_SYSCALL64_slow_path+0x25/0x25 [ 523.890344] RIP: 0033:0x7f012fe331e0 [ 523.890345] RSP: 002b:00007ffccf672a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 523.890346] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f012fe331e0 [ 523.890347] RDX: 0000000000000008 RSI: 0000000000793130 RDI: 0000000000000001 [ 523.890347] RBP: 0000000000793130 R08: 00007f01300f7740 R09: 00007f013077af80 [ 523.890348] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000008 [ 523.890349] R13: 0000000000000001 R14: 00007f01300f65e0 R15: 0000000000000000 [ 523.890350] Code: Bad RIP value. [ 523.890354] RIP: (null) RSP: ffffc90003e3bca0 [ 523.890354] CR2: 0000000000000000 [ 523.890356] ---[ end trace a653bce7b1707265 ]--- [
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