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BUG: KASAN: vmalloc-out-of-bounds in bpf_prog_get_recursion_context include/linux/bpf.h:2055 [inline]
BUG: KASAN: vmalloc-out-of-bounds in __bpf_trace_run kernel/trace/bpf_trace.c:2080 [inline]
BUG: KASAN: vmalloc-out-of-bounds in bpf_trace_run2+0x28c/0x840 kernel/trace/bpf_trace.c:2129
Read of size 8 at addr ffffc900014df040 by task dhcpcd/5168

CPU: 0 UID: 101 PID: 5168 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 bpf_prog_get_recursion_context include/linux/bpf.h:2055 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2080 [inline]
 bpf_trace_run2+0x28c/0x840 kernel/trace/bpf_trace.c:2129
 __do_trace_kfree include/trace/events/kmem.h:97 [inline]
 trace_kfree include/trace/events/kmem.h:97 [inline]
 kfree+0x5b2/0x630 mm/slub.c:6472
 seccomp_filter_free kernel/seccomp.c:528 [inline]
 __put_seccomp_filter kernel/seccomp.c:547 [inline]
 __seccomp_filter_release kernel/seccomp.c:556 [inline]
 seccomp_filter_release+0x22b/0x2d0 kernel/seccomp.c:585
 do_exit+0x3b0/0x23c0 kernel/exit.c:920
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118
 get_signal+0x1284/0x1330 kernel/signal.c:3034
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3b2a3d407
Code: Unable to access opcode bytes at 0x7fc3b2a3d3dd.
RSP: 002b:00007fffd7cf13a0 EFLAGS: 00000202 ORIG_RAX: 000000000000010f
RAX: 0000000000000001 RBX: 00007fc3b29b3780 RCX: 00007fc3b2a3d407
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000056429d0e8380
RBP: 00007fffd7cf16e0 R08: 0000000000000008 R09: 0000000000000000
R10: 00007fffd7cf16e0 R11: 0000000000000202 R12: 00005642965755e0
R13: 000056429d0dbd40 R14: 0000000000000000 R15: 00007fffd7cf1490
 </TASK>

The buggy address belongs to a vmalloc virtual mapping
Memory state around the buggy address:
 ffffc900014def00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc900014def80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ffffc900014df000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                                           ^
 ffffc900014df080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc900014df100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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