program: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f00000000c0)=0xf) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$TCFLSH(r1, 0x400455c8, 0x1) (async, rerun: 32) ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000000040)=0xff) (async, rerun: 32) ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000000340)) ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000180)=0x40) (async) ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000240)) (async) ioctl$TIOCSTI(r1, 0x5412, &(0x7f00000001c0)) [ 85.670593][ T45] Bluetooth: hci0: command tx timeout [ 85.739352][ T5366] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI [ 85.744280][ T5366] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] [ 85.747603][ T5366] CPU: 0 UID: 0 PID: 5366 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.751054][ T5366] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.755171][ T5366] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 85.757251][ T5366] 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 84 a6 b8 f9 49 8b 1f 31 ff 48 89 [ 85.765560][ T5366] RSP: 0018:ffffc9000d457c00 EFLAGS: 00010206 [ 85.768250][ T5366] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 85.771630][ T5366] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 85.774918][ T5366] RBP: ffffc9000d457d60 R08: ffff888033d7941f R09: 1ffff110067af283 [ 85.778186][ T5366] R10: dffffc0000000000 R11: ffffffff886c06e0 R12: 0000000000000001 [ 85.781444][ T5366] R13: ffffc9000d457e00 R14: dffffc0000000000 R15: 0000000000000108 [ 85.784714][ T5366] FS: 00007f45ad58c6c0(0000) GS:ffff88808d20c000(0000) knlGS:0000000000000000 [ 85.788130][ T5366] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.790818][ T5366] CR2: 00005555825dc7c8 CR3: 0000000043449000 CR4: 0000000000352ef0 [ 85.794060][ T5366] Call Trace: [ 85.795492][ T5366] [ 85.796791][ T5366] ? __pfx_bcsp_recv+0x10/0x10 [ 85.798820][ T5366] ? rcu_read_lock_any_held+0xb3/0x120 [ 85.801117][ T5366] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 85.803486][ T5366] ? tty_audit_push+0x7c/0x250 [ 85.805433][ T5366] hci_uart_tty_receive+0x194/0x220 [ 85.807629][ T5366] ? __pfx_hci_uart_tty_receive+0x10/0x10 [ 85.809935][ T5366] tiocsti+0x239/0x2c0 [ 85.811694][ T5366] ? __pfx_tiocsti+0x10/0x10 [ 85.813652][ T5366] ? __fget_files+0x2a/0x420 [ 85.815637][ T5366] ? __fget_files+0x3a0/0x420 [ 85.817632][ T5366] ? __fget_files+0x2a/0x420 [ 85.819641][ T5366] tty_ioctl+0x626/0xde0 [ 85.821477][ T5366] ? __pfx_tty_ioctl+0x10/0x10 [ 85.823546][ T5366] __se_sys_ioctl+0xfc/0x170 [ 85.825517][ T5366] do_syscall_64+0xfa/0x3b0 [ 85.827594][ T5366] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.829845][ T5366] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.832261][ T5366] ? clear_bhb_loop+0x60/0xb0 [ 85.833918][ T5366] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.836025][ T5366] RIP: 0033:0x7f45ac78eba9 [ 85.837596][ T5366] 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 [ 85.844494][ T5366] RSP: 002b:00007f45ad58c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.847697][ T5366] RAX: ffffffffffffffda RBX: 00007f45ac9d6090 RCX: 00007f45ac78eba9 [ 85.850933][ T5366] RDX: 00002000000001c0 RSI: 0000000000005412 RDI: 0000000000000004 [ 85.854123][ T5366] RBP: 00007f45ac811e19 R08: 0000000000000000 R09: 0000000000000000 [ 85.857373][ T5366] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.860518][ T5366] R13: 00007f45ac9d6128 R14: 00007f45ac9d6090 R15: 00007ffd88c3ad38 [ 85.863684][ T5366] [ 85.864964][ T5366] Modules linked in: [ 85.866937][ T5366] ---[ end trace 0000000000000000 ]--- [ 85.885580][ T5366] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 85.887850][ T5366] 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 84 a6 b8 f9 49 8b 1f 31 ff 48 89 [ 85.897812][ T5366] RSP: 0018:ffffc9000d457c00 EFLAGS: 00010206 [ 85.900613][ T5366] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 85.904236][ T5366] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 85.908238][ T5366] RBP: ffffc9000d457d60 R08: ffff888033d7941f R09: 1ffff110067af283 [ 85.911446][ T5366] R10: dffffc0000000000 R11: ffffffff886c06e0 R12: 0000000000000001 [ 85.915260][ T5366] R13: ffffc9000d457e00 R14: dffffc0000000000 R15: 0000000000000108 [ 85.918571][ T5366] FS: 00007f45ad58c6c0(0000) GS:ffff88808d20c000(0000) knlGS:0000000000000000 [ 85.922299][ T5366] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.925633][ T5366] CR2: 00007f45ad56afc8 CR3: 0000000043449000 CR4: 0000000000352ef0 [ 85.929193][ T5366] Kernel panic - not syncing: Fatal exception [ 85.931967][ T5366] Kernel Offset: disabled [ 85.933811][ T5366] Rebooting in 86400 seconds..