program: syz_usb_connect(0x2, 0x9a2, 0x0, 0x0) r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f00000000c0)=0xf) (async) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) getsockopt$sock_cred(r2, 0x1, 0x11, &(0x7f0000000280)={0x0}, &(0x7f00000013c0)=0xc) sendmmsg$unix(r2, &(0x7f00000014c0)=[{{0x0, 0x0, &(0x7f00000003c0)=[{&(0x7f0000000140)='8', 0x1}], 0x1, &(0x7f0000000040)=[@cred={{0x1c, 0x1, 0x2, {r3, 0x0, 0xee01}}}], 0x20}}], 0x1, 0x0) pipe(&(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_int(r1, 0x1, 0x10, &(0x7f00000002c0)=0x8001, 0x4) (async) write$binfmt_elf64(r2, &(0x7f0000000300)=ANY=[], 0x78) (async) splice(r1, 0x0, r4, 0x0, 0x39000, 0x0) ioctl$TCFLSH(r0, 0x400455c8, 0x1) (async) ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000680)=0x81) (async) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000100)=0x19) (async) syz_emit_ethernet(0x2a, &(0x7f0000000500)={@broadcast, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x23}, @void, {@arp={0x806, @generic={0x206, 0x6005, 0x6, 0x0, 0x3, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x19}, "", @multicast, "431da04ca40e7532"}}}}, 0x0) [ 75.685192][ T4668] Bluetooth: hci0: command tx timeout [ 75.748735][ T5321] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI [ 75.753784][ T5321] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] [ 75.757316][ T5321] CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00346-gafa9a6f4f574 #0 PREEMPT(full) [ 75.762153][ T5321] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.766665][ T5321] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 75.773612][ T5321] Code: 89 4c 24 40 48 89 54 24 28 48 c1 ea 03 48 89 54 24 68 48 89 5c 24 20 48 c1 eb 03 48 89 5c 24 60 4c 89 7c 24 38 48 8b 44 24 58 <42> 80 3c 30 00 74 08 4c 89 ff e8 a4 64 c5 f9 49 8b 1f 31 ff 48 89 [ 75.781842][ T5321] RSP: 0018:ffffc9000ee9fc00 EFLAGS: 00010206 [ 75.784344][ T5321] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 75.787855][ T5321] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 75.791233][ T5321] RBP: ffffc9000ee9fd60 R08: ffff88803fe3081f R09: 1ffff11007fc6103 [ 75.794583][ T5321] R10: dffffc0000000000 R11: ffffffff885e6b80 R12: 0000000000000001 [ 75.797977][ T5321] R13: ffffc9000ee9fe00 R14: dffffc0000000000 R15: 0000000000000108 [ 75.801331][ T5321] FS: 00007fcd793b46c0(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 [ 75.805019][ T5321] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.807857][ T5321] CR2: 00007fcd79393d58 CR3: 000000003f4a0000 CR4: 0000000000352ef0 [ 75.811140][ T5321] Call Trace: [ 75.812535][ T5321] [ 75.813858][ T5321] ? __pfx_bcsp_recv+0x10/0x10 [ 75.815896][ T5321] ? rcu_read_lock_any_held+0xb3/0x120 [ 75.818262][ T5321] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 75.820732][ T5321] ? tty_audit_push+0x7c/0x250 [ 75.822856][ T5321] hci_uart_tty_receive+0x191/0x220 [ 75.825278][ T5321] ? __pfx_hci_uart_tty_receive+0x10/0x10 [ 75.827903][ T5321] tiocsti+0x239/0x2c0 [ 75.829660][ T5321] ? __pfx_tiocsti+0x10/0x10 [ 75.831660][ T5321] ? __fget_files+0x2a/0x420 [ 75.833722][ T5321] ? __fget_files+0x3a0/0x420 [ 75.835789][ T5321] ? __fget_files+0x2a/0x420 [ 75.837832][ T5321] tty_ioctl+0x626/0xde0 [ 75.839722][ T5321] ? __pfx_tty_ioctl+0x10/0x10 [ 75.841712][ T5321] __se_sys_ioctl+0xf9/0x170 [ 75.843694][ T5321] do_syscall_64+0xfa/0x3b0 [ 75.845974][ T5321] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.848056][ T5321] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.850668][ T5321] ? clear_bhb_loop+0x60/0xb0 [ 75.852574][ T5321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.855088][ T5321] RIP: 0033:0x7fcd7858e929 [ 75.857032][ T5321] 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 [ 75.865202][ T5321] RSP: 002b:00007fcd793b4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.868772][ T5321] RAX: ffffffffffffffda RBX: 00007fcd787b6160 RCX: 00007fcd7858e929 [ 75.872125][ T5321] RDX: 0000200000000680 RSI: 0000000000005412 RDI: 0000000000000003 [ 75.875430][ T5321] RBP: 00007fcd78610b39 R08: 0000000000000000 R09: 0000000000000000 [ 75.879232][ T5321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.882893][ T5321] R13: 0000000000000000 R14: 00007fcd787b6160 R15: 00007ffe2c678788 [ 75.886305][ T5321] [ 75.887629][ T5321] Modules linked in: [ 75.889722][ T5321] ---[ end trace 0000000000000000 ]--- [ 75.915083][ T5321] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 75.917320][ T5321] Code: 89 4c 24 40 48 89 54 24 28 48 c1 ea 03 48 89 54 24 68 48 89 5c 24 20 48 c1 eb 03 48 89 5c 24 60 4c 89 7c 24 38 48 8b 44 24 58 <42> 80 3c 30 00 74 08 4c 89 ff e8 a4 64 c5 f9 49 8b 1f 31 ff 48 89 [ 75.929442][ T5321] RSP: 0018:ffffc9000ee9fc00 EFLAGS: 00010206 [ 75.932467][ T5321] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 75.937471][ T5321] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 75.940845][ T5321] RBP: ffffc9000ee9fd60 R08: ffff88803fe3081f R09: 1ffff11007fc6103 [ 75.944223][ T5321] R10: dffffc0000000000 R11: ffffffff885e6b80 R12: 0000000000000001 [ 75.948136][ T5321] R13: ffffc9000ee9fe00 R14: dffffc0000000000 R15: 0000000000000108 [ 75.951563][ T5321] FS: 00007fcd793b46c0(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 [ 75.955978][ T5321] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.959022][ T5321] CR2: 00007ffe2c677fc0 CR3: 000000003f4a0000 CR4: 0000000000352ef0 [ 75.962349][ T5321] Kernel panic - not syncing: Fatal exception [ 75.965237][ T5321] Kernel Offset: disabled [ 75.967264][ T5321] Rebooting in 86400 seconds..