BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 6c12067 P4D 6c12067 PUD 6c14067 PMD 6c16067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 84 Comm: syslogd Not tainted 6.1.43-syzkaller-00016-g825c17428a47 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36 Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 1b 7d d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc900009376b0 EFLAGS: 00010257 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff8881008b0000 RDX: ffff8881008b0ba0 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc900009376e8 R08: ffffffff81a27d75 R09: ffffed10216dbcc3 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90000937728 R15: ffffc90000937730 FS: 00007fefab8b5380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010fa75000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_kernel_common kernel/trace/bpf_trace.c:230 [inline] ____bpf_probe_read_kernel kernel/trace/bpf_trace.c:239 [inline] bpf_probe_read_kernel+0x2a/0x70 kernel/trace/bpf_trace.c:236 bpf_prog_bd8b22826c103b08+0x3a/0x3c bpf_dispatcher_nop_func include/linux/bpf.h:986 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2268 [inline] bpf_trace_run2+0x133/0x290 kernel/trace/bpf_trace.c:2307 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:94 trace_kfree include/trace/events/kmem.h:94 [inline] kfree+0xce/0xf0 mm/slab_common.c:996 skb_free_head net/core/skbuff.c:760 [inline] skb_release_data+0x616/0x840 net/core/skbuff.c:789 skb_release_all net/core/skbuff.c:854 [inline] __kfree_skb net/core/skbuff.c:868 [inline] consume_skb+0xac/0x250 net/core/skbuff.c:1033 skb_free_datagram+0x15/0x20 net/core/datagram.c:322 __unix_dgram_recvmsg+0xcce/0x12b0 net/unix/af_unix.c:2530 unix_dgram_recvmsg+0xb7/0xd0 net/unix/af_unix.c:2547 sock_recvmsg_nosec net/socket.c:1000 [inline] sock_recvmsg net/socket.c:1018 [inline] sock_read_iter+0x3b2/0x4b0 net/socket.c:1091 call_read_iter include/linux/fs.h:2209 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x771/0xad0 fs/read_write.c:470 ksys_read+0x199/0x2c0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x7b/0x90 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fefaba09b6a Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffe0f0841d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fefaba09b6a RDX: 00000000000000ff RSI: 0000563b3047f300 RDI: 0000000000000000 RBP: 0000563b3047f2c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000246 R12: 0000563b3047f357 R13: 0000563b3047f300 R14: 0000000000000000 R15: 00007fefabbe6a80 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36 Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 1b 7d d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc900009376b0 EFLAGS: 00010257 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff8881008b0000 RDX: ffff8881008b0ba0 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc900009376e8 R08: ffffffff81a27d75 R09: ffffed10216dbcc3 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90000937728 R15: ffffc90000937730 FS: 00007fefab8b5380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010fa75000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 55 d0 mov %rdx,-0x30(%rbp) 4: 0f 85 de 01 00 00 jne 0x1e8 a: ff 02 incl (%rdx) c: bf 07 00 00 00 mov $0x7,%edi 11: 4c 89 ee mov %r13,%rsi 14: e8 1b 7d d2 ff call 0xffd27d34 19: 49 83 fd 07 cmp $0x7,%r13 1d: 76 58 jbe 0x77 1f: 4d 89 fe mov %r15,%r14 22: 49 83 c7 08 add $0x8,%r15 26: 49 83 c5 f8 add $0xfffffffffffffff8,%r13 * 2a: 49 8b 1c 24 mov (%r12),%rbx <-- trapping instruction 2e: 4c 89 f0 mov %r14,%rax 31: 48 c1 e8 03 shr $0x3,%rax 35: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 3c: fc ff df 3f: 80 .byte 0x80