program: r0 = bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000300)={0x6, 0x3, &(0x7f0000000140)=@framed, &(0x7f00000001c0)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x25, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x90) r1 = socket$phonet_pipe(0x23, 0x5, 0x2) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'netdevsim0\x00', 0x0}) r3 = bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f00000000c0)={r0, r2, 0x25, 0x0, @void}, 0x10) bpf$LINK_DETACH(0x22, &(0x7f0000000240)=r3, 0x4) [ 58.748651][ T5317] ------------[ cut here ]------------ [ 58.751170][ T5317] WARNING: CPU: 0 PID: 5317 at ./include/net/netdev_lock.h:54 dev_xdp_install+0x5e6/0x760 [ 58.755585][ T5317] Modules linked in: [ 58.757233][ T5317] CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) [ 58.763205][ T5317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 58.772095][ T5317] RIP: 0010:dev_xdp_install+0x5e6/0x760 [ 58.775671][ T5317] Code: 06 48 3b 84 24 a0 00 00 00 0f 85 8e 01 00 00 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 fb dc e2 f7 90 <0f> 0b 90 e9 2d fc ff ff e8 ed dc e2 f7 c6 05 4c b5 66 06 01 90 48 [ 58.783225][ T5317] RSP: 0018:ffffc9000d507980 EFLAGS: 00010287 [ 58.785853][ T5317] RAX: ffffffff89e09a05 RBX: 0000000000000000 RCX: 0000000000100000 [ 58.788907][ T5317] RDX: ffffc9000e72a000 RSI: 0000000000000154 RDI: 0000000000000155 [ 58.791948][ T5317] RBP: ffffc9000d507a80 R08: ffffffff89e095e9 R09: 0000000000000000 [ 58.795356][ T5317] R10: ffffc9000d5079e0 R11: fffff52001aa0f40 R12: ffffc9000194e000 [ 58.798856][ T5317] R13: 1ffff92001aa0f38 R14: dffffc0000000000 R15: ffff888052dc4000 [ 58.802076][ T5317] FS: 00007f0de0a056c0(0000) GS:ffff88808c60f000(0000) knlGS:0000000000000000 [ 58.805920][ T5317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.808488][ T5317] CR2: 00007f0ddfd94710 CR3: 0000000042b3a000 CR4: 0000000000352ef0 [ 58.811704][ T5317] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.815927][ T5317] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.818977][ T5317] Call Trace: [ 58.820787][ T5317] [ 58.822051][ T5317] ? __warn+0x165/0x4d0 [ 58.823750][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.826306][ T5317] ? report_bug+0x2b3/0x500 [ 58.828138][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.830115][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.832354][ T5317] ? dev_xdp_install+0x5e8/0x760 [ 58.834353][ T5317] ? handle_bug+0x89/0x170 [ 58.836256][ T5317] ? exc_invalid_op+0x1a/0x50 [ 58.838202][ T5317] ? asm_exc_invalid_op+0x1a/0x20 [ 58.840231][ T5317] ? dev_xdp_install+0x1c9/0x760 [ 58.842252][ T5317] ? dev_xdp_install+0x5e5/0x760 [ 58.844195][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.846248][ T5317] ? __pfx_nsim_bpf+0x10/0x10 [ 58.848257][ T5317] ? __pfx_dev_xdp_install+0x10/0x10 [ 58.850358][ T5317] ? __pfx_nsim_bpf+0x10/0x10 [ 58.852389][ T5317] dev_xdp_attach+0xc5d/0xfe0 [ 58.854148][ T5317] bpf_xdp_link_attach+0x3a2/0x760 [ 58.856267][ T5317] ? __pfx_bpf_xdp_link_attach+0x10/0x10 [ 58.858594][ T5317] ? __fget_files+0x39d/0x420 [ 58.860496][ T5317] ? __fget_files+0x2a/0x420 [ 58.862310][ T5317] ? attach_type_to_prog_type+0x316/0x460 [ 58.864562][ T5317] ? bpf_prog_attach_check_attach_type+0x2cb/0x4f0 [ 58.867332][ T5317] link_create+0x440/0x870 [ 58.869151][ T5317] __sys_bpf+0x559/0x850 [ 58.870894][ T5317] ? __pfx___sys_bpf+0x10/0x10 [ 58.872891][ T5317] ? __rseq_handle_notify_resume+0x3c8/0x15d0 [ 58.876164][ T5317] __x64_sys_bpf+0x7c/0x90 [ 58.878501][ T5317] do_syscall_64+0xf3/0x230 [ 58.880720][ T5317] ? clear_bhb_loop+0x45/0xa0 [ 58.882690][ T5317] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.885234][ T5317] RIP: 0033:0x7f0ddfb8d169 [ 58.887071][ T5317] 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 [ 58.896478][ T5317] RSP: 002b:00007f0de0a05038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 58.900737][ T5317] RAX: ffffffffffffffda RBX: 00007f0ddfda5fa0 RCX: 00007f0ddfb8d169 [ 58.903758][ T5317] RDX: 0000000000000010 RSI: 00002000000000c0 RDI: 000000000000001c [ 58.907659][ T5317] RBP: 00007f0ddfc0e2a0 R08: 0000000000000000 R09: 0000000000000000 [ 58.911539][ T5317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 58.915681][ T5317] R13: 0000000000000000 R14: 00007f0ddfda5fa0 R15: 00007fff5d403f18 [ 58.919647][ T5317] [ 58.920967][ T5317] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 58.924301][ T5317] CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) [ 58.929556][ T5317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 58.934350][ T5317] Call Trace: [ 58.935642][ T5317] [ 58.936816][ T5317] dump_stack_lvl+0x241/0x360 [ 58.938653][ T5317] ? __pfx_dump_stack_lvl+0x10/0x10 [ 58.940695][ T5317] ? __pfx__printk+0x10/0x10 [ 58.942596][ T5317] ? vscnprintf+0x5d/0x90 [ 58.944309][ T5317] panic+0x349/0x880 [ 58.945971][ T5317] ? __warn+0x174/0x4d0 [ 58.947762][ T5317] ? __pfx_panic+0x10/0x10 [ 58.949578][ T5317] __warn+0x344/0x4d0 [ 58.951207][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.953258][ T5317] report_bug+0x2b3/0x500 [ 58.954987][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.957053][ T5317] ? dev_xdp_install+0x5e6/0x760 [ 58.959115][ T5317] ? dev_xdp_install+0x5e8/0x760 [ 58.961144][ T5317] handle_bug+0x89/0x170 [ 58.962863][ T5317] exc_invalid_op+0x1a/0x50 [ 58.964647][ T5317] asm_exc_invalid_op+0x1a/0x20 [ 58.966514][ T5317] RIP: 0010:dev_xdp_install+0x5e6/0x760 [ 58.968671][ T5317] Code: 06 48 3b 84 24 a0 00 00 00 0f 85 8e 01 00 00 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 fb dc e2 f7 90 <0f> 0b 90 e9 2d fc ff ff e8 ed dc e2 f7 c6 05 4c b5 66 06 01 90 48 [ 58.976122][ T5317] RSP: 0018:ffffc9000d507980 EFLAGS: 00010287 [ 58.978565][ T5317] RAX: ffffffff89e09a05 RBX: 0000000000000000 RCX: 0000000000100000 [ 58.981684][ T5317] RDX: ffffc9000e72a000 RSI: 0000000000000154 RDI: 0000000000000155 [ 58.984849][ T5317] RBP: ffffc9000d507a80 R08: ffffffff89e095e9 R09: 0000000000000000 [ 58.987886][ T5317] R10: ffffc9000d5079e0 R11: fffff52001aa0f40 R12: ffffc9000194e000 [ 58.991270][ T5317] R13: 1ffff92001aa0f38 R14: dffffc0000000000 R15: ffff888052dc4000 [ 58.994399][ T5317] ? dev_xdp_install+0x1c9/0x760 [ 58.996305][ T5317] ? dev_xdp_install+0x5e5/0x760 [ 58.998284][ T5317] ? __pfx_nsim_bpf+0x10/0x10 [ 59.000214][ T5317] ? __pfx_dev_xdp_install+0x10/0x10 [ 59.002208][ T5317] ? __pfx_nsim_bpf+0x10/0x10 [ 59.003960][ T5317] dev_xdp_attach+0xc5d/0xfe0 [ 59.005873][ T5317] bpf_xdp_link_attach+0x3a2/0x760 [ 59.007789][ T5317] ? __pfx_bpf_xdp_link_attach+0x10/0x10 [ 59.010240][ T5317] ? __fget_files+0x39d/0x420 [ 59.012083][ T5317] ? __fget_files+0x2a/0x420 [ 59.013962][ T5317] ? attach_type_to_prog_type+0x316/0x460 [ 59.016242][ T5317] ? bpf_prog_attach_check_attach_type+0x2cb/0x4f0 [ 59.018885][ T5317] link_create+0x440/0x870 [ 59.020699][ T5317] __sys_bpf+0x559/0x850 [ 59.022370][ T5317] ? __pfx___sys_bpf+0x10/0x10 [ 59.024300][ T5317] ? __rseq_handle_notify_resume+0x3c8/0x15d0 [ 59.026770][ T5317] __x64_sys_bpf+0x7c/0x90 [ 59.028689][ T5317] do_syscall_64+0xf3/0x230 [ 59.030467][ T5317] ? clear_bhb_loop+0x45/0xa0 [ 59.032380][ T5317] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 59.034681][ T5317] RIP: 0033:0x7f0ddfb8d169 [ 59.036347][ T5317] 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 [ 59.043010][ T5317] RSP: 002b:00007f0de0a05038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 59.046024][ T5317] RAX: ffffffffffffffda RBX: 00007f0ddfda5fa0 RCX: 00007f0ddfb8d169 [ 59.048807][ T5317] RDX: 0000000000000010 RSI: 00002000000000c0 RDI: 000000000000001c [ 59.051807][ T5317] RBP: 00007f0ddfc0e2a0 R08: 0000000000000000 R09: 0000000000000000 [ 59.054897][ T5317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.058052][ T5317] R13: 0000000000000000 R14: 00007f0ddfda5fa0 R15: 00007fff5d403f18 [ 59.061083][ T5317] [ 59.062618][ T5317] Kernel Offset: disabled [ 59.064348][ T5317] Rebooting in 86400 seconds..