[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 59.818678][ C0] hrtimer: interrupt took 37337 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 73.555863][T11007] ------------[ cut here ]------------ [ 73.561346][T11007] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 73.561415][T11007] WARNING: CPU: 0 PID: 11007 at kernel/locking/mutex.c:1415 mutex_trylock+0x220/0x2c0 [ 73.577314][T11007] Kernel panic - not syncing: panic_on_warn set ... [ 73.583885][T11007] CPU: 0 PID: 11007 Comm: syz-executor947 Not tainted 5.8.0-rc3-syzkaller #0 [ 73.592705][T11007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.602743][T11007] Call Trace: [ 73.606021][T11007] dump_stack+0x18f/0x20d [ 73.610331][T11007] panic+0x2e3/0x75c [ 73.614206][T11007] ? __warn_printk+0xf3/0xf3 [ 73.618777][T11007] ? lock_downgrade+0x820/0x820 [ 73.623617][T11007] ? cont_add+0x98/0x120 [ 73.627849][T11007] ? __warn.cold+0x5/0x45 [ 73.632154][T11007] ? __warn+0xd6/0x1f2 [ 73.636741][T11007] ? mutex_trylock+0x220/0x2c0 [ 73.641504][T11007] __warn.cold+0x20/0x45 [ 73.645777][T11007] ? mutex_trylock+0x220/0x2c0 [ 73.650517][T11007] report_bug+0x1bd/0x210 [ 73.654824][T11007] handle_bug+0x38/0x90 [ 73.658964][T11007] exc_invalid_op+0x13/0x40 [ 73.663445][T11007] asm_exc_invalid_op+0x12/0x20 [ 73.668272][T11007] RIP: 0010:mutex_trylock+0x220/0x2c0 [ 73.673615][T11007] Code: 08 84 d2 0f 85 99 00 00 00 8b 3d cb 07 c8 02 85 ff 0f 85 6a fe ff ff 48 c7 c6 60 9c 4b 88 48 c7 c7 20 9a 4b 88 e8 82 77 5e f9 <0f> 0b e9 50 fe ff ff ff 74 24 38 48 8d 7b 68 45 31 c9 31 c9 41 b8 [ 73.693719][T11007] RSP: 0018:ffffc90008757818 EFLAGS: 00010282 [ 73.699786][T11007] RAX: 0000000000000000 RBX: ffff888093a14378 RCX: 0000000000000000 [ 73.707748][T11007] RDX: ffff8880924b61c0 RSI: ffffffff815d4f47 RDI: fffff520010eaef5 [ 73.715734][T11007] RBP: ffff888093a14000 R08: 0000000000000000 R09: ffffffff89bb5ba3 [ 73.723826][T11007] R10: 000000000000059f R11: 0000000000000001 R12: ffffffff8c90d1a0 [ 73.731928][T11007] R13: ffff888093a14340 R14: 0000000000000000 R15: ffff888093a14538 [ 73.740279][T11007] ? vprintk_func+0x97/0x1a6 [ 73.745072][T11007] ? mutex_trylock+0x220/0x2c0 [ 73.750000][T11007] rxrpc_recvmsg+0x695/0x1a03 [ 73.754771][T11007] ? rxrpc_abort_call+0x60/0x60 [ 73.759709][T11007] ? __might_fault+0xef/0x1d0 [ 73.764403][T11007] ? find_held_lock+0x2d/0x110 [ 73.769164][T11007] ? aa_af_perm+0x230/0x230 [ 73.773648][T11007] ? __might_fault+0x11f/0x1d0 [ 73.778392][T11007] ? finish_wait+0x260/0x260 [ 73.783051][T11007] ? security_socket_recvmsg+0x8f/0xc0 [ 73.788632][T11007] ? rxrpc_abort_call+0x60/0x60 [ 73.793464][T11007] ____sys_recvmsg+0x2c4/0x640 [ 73.798222][T11007] ? move_addr_to_kernel.part.0+0x110/0x110 [ 73.804918][T11007] ? __copy_msghdr_from_user+0x2b4/0x4b0 [ 73.810625][T11007] ? import_iovec+0x23b/0x3d0 [ 73.815324][T11007] ? compat_import_iovec+0x3d0/0x3d0 [ 73.821493][T11007] ___sys_recvmsg+0x127/0x200 [ 73.826180][T11007] ? __copy_msghdr_from_user+0x4b0/0x4b0 [ 73.832161][T11007] ? lock_downgrade+0x820/0x820 [ 73.837747][T11007] ? __fget_files+0x294/0x400 [ 73.842887][T11007] ? __fget_light+0xea/0x280 [ 73.847818][T11007] do_recvmmsg+0x24d/0x6d0 [ 73.852620][T11007] ? ___sys_recvmsg+0x200/0x200 [ 73.857463][T11007] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 73.864474][T11007] ? lock_acquire+0x1f1/0xad0 [ 73.869137][T11007] ? find_held_lock+0x2d/0x110 [ 73.873892][T11007] ? calculate_sigpending+0x42/0xa0 [ 73.879504][T11007] ? find_held_lock+0x2d/0x110 [ 73.884944][T11007] __x64_sys_recvmmsg+0x20b/0x260 [ 73.890037][T11007] ? __do_sys_socketcall+0x550/0x550 [ 73.895300][T11007] ? lock_is_held_type+0xb0/0xe0 [ 73.900229][T11007] ? do_syscall_64+0x1c/0xe0 [ 73.904801][T11007] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 73.910758][T11007] do_syscall_64+0x60/0xe0 [ 73.915159][T11007] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.921375][T11007] RIP: 0033:0x447b79 [ 73.925244][T11007] Code: Bad RIP value. [ 73.929282][T11007] RSP: 002b:00007fdf4e75dce8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 73.937683][T11007] RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 0000000000447b79 [ 73.945657][T11007] RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000004 [ 73.953623][T11007] RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 [ 73.961674][T11007] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c [ 73.969734][T11007] R13: 00007ffc658e40ef R14: 00007fdf4e75e9c0 R15: 20c49ba5e353f7cf [ 73.979132][T11007] Kernel Offset: disabled [ 73.983536][T11007] Rebooting in 86400 seconds..