BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0001) - permissions violation PGD 6812067 P4D 6812067 PUD 6814067 PMD 6816067 PTE 8000000006809165 Oops: 0001 [#1] PREEMPT SMP KASAN CPU: 1 PID: 82 Comm: syslogd Not tainted 5.15.137-syzkaller-01792-g61cfd264993d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:copy_from_kernel_nofault+0x86/0x2e0 mm/maccess.c:37 Code: 48 89 55 d0 0f 85 ea 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 3b ac d6 ff 49 83 fd 07 76 5c 4d 89 fe 49 83 c5 f8 49 83 c7 08 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90000927670 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff88810b7e13c0 RDX: ffff88810b7e1f50 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc900009276a8 R08: ffffffff81994f35 R09: ffffed1021863c1b R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc900009276e8 R15: ffffc900009276f0 FS: 00007f89316cc380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010c4e7000 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:220 [inline] ____bpf_probe_read_kernel kernel/trace/bpf_trace.c:229 [inline] bpf_probe_read_kernel+0x2a/0x70 kernel/trace/bpf_trace.c:226 bpf_prog_bd8b22826c103b08+0x3a/0xafc bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118 trace_kfree include/trace/events/kmem.h:118 [inline] kfree+0x1f3/0x220 mm/slub.c:4569 skb_free_head net/core/skbuff.c:656 [inline] skb_release_data+0x8a9/0xa80 net/core/skbuff.c:678 skb_release_all net/core/skbuff.c:743 [inline] __kfree_skb net/core/skbuff.c:757 [inline] consume_skb+0xac/0x250 net/core/skbuff.c:930 skb_free_datagram+0x28/0xe0 net/core/datagram.c:325 __unix_dgram_recvmsg+0xcb1/0x1260 net/unix/af_unix.c:2396 unix_dgram_recvmsg+0xc4/0xe0 net/unix/af_unix.c:2414 sock_recvmsg_nosec net/socket.c:964 [inline] sock_recvmsg net/socket.c:982 [inline] sock_read_iter+0x353/0x480 net/socket.c:1055 call_read_iter include/linux/fs.h:2153 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0xa7e/0xd40 fs/read_write.c:485 ksys_read+0x199/0x2c0 fs/read_write.c:623 __do_sys_read fs/read_write.c:633 [inline] __se_sys_read fs/read_write.c:631 [inline] __x64_sys_read+0x7b/0x90 fs/read_write.c:631 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+0x61/0xcb RIP: 0033:0x7f8931820b6a 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:00007ffc70a369d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8931820b6a RDX: 00000000000000ff RSI: 0000562fa0af6300 RDI: 0000000000000000 RBP: 0000562fa0af62c0 R08: 0000000000000001 R09: 0000000000000000 R10: 00007f89319bf3a3 R11: 0000000000000246 R12: 0000562fa0af63ff R13: 0000562fa0af6300 R14: 0000000000000000 R15: 00007f89319fda80 Modules linked in: CR2: ffffffffff600000 ---[ end trace 98676cdd4fb87fa7 ]--- RIP: 0010:copy_from_kernel_nofault+0x86/0x2e0 mm/maccess.c:37 Code: 48 89 55 d0 0f 85 ea 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 3b ac d6 ff 49 83 fd 07 76 5c 4d 89 fe 49 83 c5 f8 49 83 c7 08 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90000927670 EFLAGS: 00010296 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff88810b7e13c0 RDX: ffff88810b7e1f50 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc900009276a8 R08: ffffffff81994f35 R09: ffffed1021863c1b R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc900009276e8 R15: ffffc900009276f0 FS: 00007f89316cc380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010c4e7000 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 ea 01 00 00 jne 0x1f4 a: ff 02 incl (%rdx) c: bf 07 00 00 00 mov $0x7,%edi 11: 4c 89 ee mov %r13,%rsi 14: e8 3b ac d6 ff call 0xffd6ac54 19: 49 83 fd 07 cmp $0x7,%r13 1d: 76 5c jbe 0x7b 1f: 4d 89 fe mov %r15,%r14 22: 49 83 c5 f8 add $0xfffffffffffffff8,%r13 26: 49 83 c7 08 add $0x8,%r15 * 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