loop3: detected capacity change from 0 to 764 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 17588 Comm: syz.3.3875 Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:dev_map_enqueue+0x31/0x3e0 kernel/bpf/devmap.c:539 Code: 41 56 41 55 41 54 53 48 83 ec 18 49 89 d4 49 89 f5 48 89 fd 49 be 00 00 00 00 00 fc ff df e8 06 a1 d7 ff 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 10 56 3d 00 4c 8b 7d 00 48 83 c5 RSP: 0018:ffffc9000470f7d8 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 0000000000000019 RCX: 0000000000040000 RDX: ffffc900114c4000 RSI: 00000000000001c1 RDI: 00000000000001c2 RBP: 0000000000000000 R08: ffffffff89619af9 R09: ffffffff89619abd R10: 0000000000000004 R11: ffff88806492da00 R12: ffff888056d68000 R13: ffff888069dd8000 R14: dffffc0000000000 R15: ffff8880b953c6d8 FS: 00007f215fae36c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e212ff8 CR3: 000000002ed88000 CR4: 0000000000350ef0 Call Trace: __xdp_do_redirect_frame net/core/filter.c:4402 [inline] xdp_do_redirect+0x60a/0xb50 net/core/filter.c:4442 tun_xdp_act+0xe9/0xb70 drivers/net/tun.c:1626 tun_build_skb drivers/net/tun.c:1716 [inline] tun_get_user+0x3467/0x4560 drivers/net/tun.c:1819 tun_chr_write_iter+0x113/0x1f0 drivers/net/tun.c:2048 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa74/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f215ed7475f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8c 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 7c 8c 02 00 48 RSP: 002b:00007f215fae3010 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f215ef03f60 RCX: 00007f215ed7475f RDX: 0000000000000016 RSI: 00000000200000c0 RDI: 00000000000000c8 RBP: 00007f215ede4aa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000016 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000000000b R14: 00007f215ef03f60 R15: 00007fff95c5f0e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_map_enqueue+0x31/0x3e0 kernel/bpf/devmap.c:539 Code: 41 56 41 55 41 54 53 48 83 ec 18 49 89 d4 49 89 f5 48 89 fd 49 be 00 00 00 00 00 fc ff df e8 06 a1 d7 ff 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 10 56 3d 00 4c 8b 7d 00 48 83 c5 RSP: 0018:ffffc9000470f7d8 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 0000000000000019 RCX: 0000000000040000 RDX: ffffc900114c4000 RSI: 00000000000001c1 RDI: 00000000000001c2 RBP: 0000000000000000 R08: ffffffff89619af9 R09: ffffffff89619abd R10: 0000000000000004 R11: ffff88806492da00 R12: ffff888056d68000 R13: ffff888069dd8000 R14: dffffc0000000000 R15: ffff8880b953c6d8 FS: 00007f215fae36c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e212ff8 CR3: 000000002ed88000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 41 56 push %r14 2: 41 55 push %r13 4: 41 54 push %r12 6: 53 push %rbx 7: 48 83 ec 18 sub $0x18,%rsp b: 49 89 d4 mov %rdx,%r12 e: 49 89 f5 mov %rsi,%r13 11: 48 89 fd mov %rdi,%rbp 14: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 1b: fc ff df 1e: e8 06 a1 d7 ff call 0xffd7a129 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 10 56 3d 00 call 0x3d5649 39: 4c 8b 7d 00 mov 0x0(%rbp),%r15 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c5 .byte 0xc5