BUG: kernel NULL pointer dereference, address: 0000000000000648
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 800000003b0fb067 P4D 800000003b0fb067 PUD 0 
Oops: Oops: 0002 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 18064 Comm: syz.1.2946 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:llc_ui_setsockopt+0x4e1/0x5f0
Code: a1 f8 eb 4b e8 f0 0c 3e f8 4c 6b f3 64 49 8d 9f a0 06 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 0f 77 a1 f8 <4c> 89 33 eb 23 e8 c5 0c 3e f8 4d 8d b7 0d 07 00 00 4c 89 f0 48 c1
RSP: 0018:ffffc90000007b98 EFLAGS: 00010246
RAX: 00000000000000c9 RBX: 0000000000000648 RCX: ffff888038701cc0
RDX: 0000000000000100 RSI: ffffffff8be332e0 RDI: ffff888022ed5c10
RBP: ffffc90000007c90 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: ffffffff89819e60 R12: 1ffff92000000f78
R13: ffff888022ed5c10 R14: 0000000000000001 R15: 0000000000000000
FS:  00007ff503d1d6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000648 CR3: 0000000038432000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x2b5/0x3e0
Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 db d0 02 11 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90009b66c30 EFLAGS: 00000206
RAX: 53c919656ce8ac00 RBX: 0000000000000202 RCX: 53c919656ce8ac00
RDX: 0000000000000000 RSI: ffffffff8dba6163 RDI: ffffffff8be33300
RBP: ffff8880387027b0 R08: ffffc90009b67f48 R09: 0000000000000000
R10: ffffc90009b66db8 R11: fffff5200136cdb9 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8e139ea0 R15: ffff888038701cc0
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_krealloc+0xe7/0x140
 krealloc_noprof+0x1b8/0x340
 push_jmp_history+0x1cc/0x6f0
 do_check+0x52cb/0xe520
 do_check_common+0x1949/0x24f0
 bpf_check+0x1746a/0x1d2d0
 bpf_prog_load+0x1318/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff502f8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff503d1d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff5031b5fa0 RCX: 00007ff502f8ebe9
RDX: 0000000000000090 RSI: 0000200000000840 RDI: 0000000000000005
RBP: 00007ff503011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5031b6038 R14: 00007ff5031b5fa0 R15: 00007ffd0d7a8808
 </TASK>
Modules linked in:
CR2: 0000000000000648
---[ end trace 0000000000000000 ]---
RIP: 0010:llc_ui_setsockopt+0x4e1/0x5f0
Code: a1 f8 eb 4b e8 f0 0c 3e f8 4c 6b f3 64 49 8d 9f a0 06 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 0f 77 a1 f8 <4c> 89 33 eb 23 e8 c5 0c 3e f8 4d 8d b7 0d 07 00 00 4c 89 f0 48 c1
RSP: 0018:ffffc90000007b98 EFLAGS: 00010246
RAX: 00000000000000c9 RBX: 0000000000000648 RCX: ffff888038701cc0
RDX: 0000000000000100 RSI: ffffffff8be332e0 RDI: ffff888022ed5c10
RBP: ffffc90000007c90 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: ffffffff89819e60 R12: 1ffff92000000f78
R13: ffff888022ed5c10 R14: 0000000000000001 R15: 0000000000000000
FS:  00007ff503d1d6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000648 CR3: 0000000038432000 CR4: 00000000000006f0
