[31148.057893] BUG: kernel NULL pointer dereference, address: 0000000000000000 [31148.059390] #PF: supervisor read access in kernel mode [31148.060530] #PF: error_code(0x0000) - not-present page [31148.061601] PGD 800000005f693067 P4D 800000005f693067 PUD 114fe067 PMD 0 [31148.063082] Oops: 0000 [#21] SMP PTI [31148.063880] CPU: 0 PID: 214019 Comm: prctl-sched-cor Tainted: G D W --------- --- 5.14.0-0.rc5.20210813gitf8e6dfc64f61.46.fc36.x86_64 #1 [31148.067019] Hardware name: HP ProLiant BL480c G1, BIOS I14 10/04/2007 [31148.068536] RIP: 0010:do_raw_spin_trylock+0x5/0x40 [31148.069629] Code: c6 a4 12 5f 9f 48 89 ef e8 c8 fe ff ff eb a9 89 c6 48 89 ef e8 0c f5 ff ff 66 90 eb a9 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <8b> 07 85 c0 75 28 ba 01 00 00 00 f0 0f b1 17 75 1d 65 8b 05 fb 98 [31148.073601] RSP: 0018:ffffa366030ffe58 EFLAGS: 00010086 [31148.074740] RAX: 0000000000000001 RBX: 0000000000000004 RCX: 0000000000000000 [31148.076235] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [31148.077770] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [31148.079264] R10: 0000000000000000 R11: 000000000121ee36 R12: 0000000000000018 [31148.080752] R13: 0000000000000000 R14: ffff98292b7ef940 R15: ffff98280d75da00 [31148.082295] FS: 00007f1aefadc600(0000) GS:ffff98292ae00000(0000) knlGS:0000000000000000 [31148.084029] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [31148.085282] CR2: 0000000000000000 CR3: 00000000013be000 CR4: 00000000000006f0 [31148.086770] Call Trace: [31148.087286] _raw_spin_lock_nested+0x37/0x80 [31148.088212] ? raw_spin_rq_lock_nested+0x4b/0x80 [31148.089180] raw_spin_rq_lock_nested+0x4b/0x80 [31148.090189] online_fair_sched_group+0x39/0x240 [31148.091185] sched_autogroup_create_attach+0x9d/0x170 [31148.092310] ksys_setsid+0xe6/0x110 [31148.093073] __do_sys_setsid+0xa/0x10 [31148.093881] do_syscall_64+0x3b/0x90 [31148.094678] entry_SYSCALL_64_after_hwframe+0x44/0xae [31148.095783] RIP: 0033:0x7f1aef9b06cb [31148.096579] Code: 73 01 c3 48 8b 0d 5d a7 11 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 70 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 2d a7 11 00 f7 d8 64 89 01 48 [31148.100758] RSP: 002b:00007fff4b7eef78 EFLAGS: 00000206 ORIG_RAX: 0000000000000070 [31148.102535] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1aef9b06cb [31148.104188] RDX: 0000000000000010 RSI: 0000000000406230 RDI: 0000000000000003 [31148.105859] RBP: 00000000ffffffff R08: 0000000000000000 R09: 00007f1aefadc600 [31148.107523] R10: 00007f1aef8e3a60 R11: 0000000000000206 R12: 0000000000000001 [31148.109155] R13: 0000000000401326 R14: 00007f1aefb14c00 R15: 0000000000405e18 [31148.110819] Modules linked in: rfkill iTCO_wdt intel_pmc_bxt iTCO_vendor_support kvm_intel gpio_ich kvm snd_pcsp snd_pcm snd_timer ipmi_ssif irqbypass snd soundcore lpc_ich acpi_ipmi e1000e tg3 hpilo ipmi_si bnx2 i5000_edac ipmi_devintf i5k_amb ipmi_msghandler fuse zram ip_tables xfs radeon i2c_algo_bit drm_ttm_helper ttm drm_kms_helper cec drm hpsa serio_raw hpwdt scsi_transport_sas [31148.118454] CR2: 0000000000000000 [31148.119246] ---[ end trace ab4b5b9489802a97 ]--- [31148.120379] RIP: 0010:__lock_acquire+0x5c1/0x1e00 [31148.121475] Code: 00 00 83 f8 2f 0f 87 59 05 00 00 3b 05 cc 46 f6 02 41 bd 01 00 00 00 0f 86 03 01 00 00 89 05 ba 46 f6 02 e9 f8 00 00 00 31 c9 <48> 81 3f 20 8e cc a0 41 0f 45 c8 83 fe 01 0f 87 6f fa ff ff 89 f0 [31148.125694] RSP: 0018:ffffa36602d5fd40 EFLAGS: 00010046 [31148.126907] RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000000 [31148.128546] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000018 [31148.130195] RBP: 0000000000000018 R08: 0000000000000001 R09: 0000000000000001 [31148.131853] R10: 0000000000000001 R11: 0000000000000000 R12: ffff98285fad33c0 [31148.133493] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [31148.135168] FS: 00007f1aefadc600(0000) GS:ffff98292ae00000(0000) knlGS:0000000000000000 [31148.137018] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [31148.138352] CR2: 0000000000000000 CR3: 00000000013be000 CR4: 00000000000006f0 [31148.139984] note: prctl-sched-cor[214019] exited with preempt_count 2 [31148.141470] BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49 [31148.143494] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 214019, name: prctl-sched-cor [31148.145497] INFO: lockdep is turned off. [31148.146422] irq event stamp: 0 [31148.147195] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [31148.148640] hardirqs last disabled at (0): [] copy_process+0x7cf/0x1fb0 [31148.150511] softirqs last enabled at (0): [] copy_process+0x7cf/0x1fb0 [31148.152384] softirqs last disabled at (0): [<0000000000000000>] 0x0 [31148.153825] CPU: 0 PID: 214019 Comm: prctl-sched-cor Tainted: G D W --------- --- 5.14.0-0.rc5.20210813gitf8e6dfc64f61.46.fc36.x86_64 #1 [31148.156852] Hardware name: HP ProLiant BL480c G1, BIOS I14 10/04/2007 [31148.158338] Call Trace: [31148.158945] dump_stack_lvl+0x57/0x72 [31148.159859] ___might_sleep.cold+0xb6/0xc6 [31148.160822] exit_signals+0x1c/0x2d0 [31148.161668] do_exit+0xbf/0xc10 [31148.162419] ? ksys_setsid+0xe6/0x110 [31148.163228] rewind_stack_do_exit+0x17/0x20 [31148.164203] RIP: 0033:0x7f1aef9b06cb [31148.165043] Code: 73 01 c3 48 8b 0d 5d a7 11 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 70 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 2d a7 11 00 f7 d8 64 89 01 48 [31148.169275] RSP: 002b:00007fff4b7eef78 EFLAGS: 00000206 ORIG_RAX: 0000000000000070 [31148.171019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1aef9b06cb [31148.172700] RDX: 0000000000000010 RSI: 0000000000406230 RDI: 0000000000000003 [31148.174343] RBP: 00000000ffffffff R08: 0000000000000000 R09: 00007f1aefadc600 [31148.175994] R10: 00007f1aef8e3a60 R11: 0000000000000206 R12: 0000000000000001 [31148.177638] R13: 0000000000401326 R14: 00007f1aefb14c00 R15: 0000000000405e18