Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 149.343885][ T6876] ------------[ cut here ]------------ [ 149.349398][ T6876] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 149.349481][ T6876] WARNING: CPU: 1 PID: 6876 at kernel/locking/mutex.c:1415 mutex_trylock+0x220/0x2c0 [ 149.364910][ T6876] Kernel panic - not syncing: panic_on_warn set ... [ 149.371481][ T6876] CPU: 1 PID: 6876 Comm: syz-executor217 Not tainted 5.8.0-rc3-syzkaller #0 [ 149.380143][ T6876] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 149.390179][ T6876] Call Trace: [ 149.393460][ T6876] dump_stack+0x18f/0x20d [ 149.397774][ T6876] panic+0x2e3/0x75c [ 149.401655][ T6876] ? __warn_printk+0xf3/0xf3 [ 149.406318][ T6876] ? lock_downgrade+0x820/0x820 [ 149.411160][ T6876] ? cont_add+0x98/0x120 [ 149.415407][ T6876] ? __warn.cold+0x5/0x45 [ 149.419717][ T6876] ? __warn+0xd6/0x1f2 [ 149.423769][ T6876] ? mutex_trylock+0x220/0x2c0 [ 149.428524][ T6876] __warn.cold+0x20/0x45 [ 149.432754][ T6876] ? mutex_trylock+0x220/0x2c0 [ 149.437515][ T6876] report_bug+0x1bd/0x210 [ 149.441846][ T6876] handle_bug+0x38/0x90 [ 149.445990][ T6876] exc_invalid_op+0x13/0x40 [ 149.450475][ T6876] asm_exc_invalid_op+0x12/0x20 [ 149.455606][ T6876] RIP: 0010:mutex_trylock+0x220/0x2c0 [ 149.460956][ T6876] Code: 08 84 d2 0f 85 99 00 00 00 8b 3d cb 08 c8 02 85 ff 0f 85 6a fe ff ff 48 c7 c6 a0 9c 4b 88 48 c7 c7 60 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 [ 149.480545][ T6876] RSP: 0018:ffffc900016a7818 EFLAGS: 00010282 [ 149.486601][ T6876] RAX: 0000000000000000 RBX: ffff8880910603f8 RCX: 0000000000000000 [ 149.494552][ T6876] RDX: ffff888097834140 RSI: ffffffff815d4f87 RDI: fffff520002d4ef5 [ 149.502508][ T6876] RBP: ffff888091060080 R08: 0000000000000000 R09: ffffffff89bb5be3 [ 149.510469][ T6876] R10: 000000000000059c R11: 0000000000000001 R12: ffffffff8c90d1a0 [ 149.518436][ T6876] R13: ffff8880910603c0 R14: 0000000000000000 R15: ffff8880910605b8 [ 149.526539][ T6876] ? vprintk_func+0x97/0x1a6 [ 149.531137][ T6876] ? mutex_trylock+0x220/0x2c0 [ 149.535886][ T6876] rxrpc_recvmsg+0x695/0x1a03 [ 149.540551][ T6876] ? rxrpc_abort_call+0x60/0x60 [ 149.545387][ T6876] ? __might_fault+0xef/0x1d0 [ 149.550045][ T6876] ? find_held_lock+0x2d/0x110 [ 149.554795][ T6876] ? aa_af_perm+0x230/0x230 [ 149.559288][ T6876] ? __might_fault+0x11f/0x1d0 [ 149.564043][ T6876] ? finish_wait+0x260/0x260 [ 149.568619][ T6876] ? security_socket_recvmsg+0x8f/0xc0 [ 149.574061][ T6876] ? rxrpc_abort_call+0x60/0x60 [ 149.578898][ T6876] ____sys_recvmsg+0x2c4/0x640 [ 149.583651][ T6876] ? move_addr_to_kernel.part.0+0x110/0x110 [ 149.589538][ T6876] ? __copy_msghdr_from_user+0x2b4/0x4b0 [ 149.595241][ T6876] ? import_iovec+0x23b/0x3d0 [ 149.599900][ T6876] ? compat_import_iovec+0x3d0/0x3d0 [ 149.605257][ T6876] ___sys_recvmsg+0x127/0x200 [ 149.609918][ T6876] ? __copy_msghdr_from_user+0x4b0/0x4b0 [ 149.615530][ T6876] ? lock_downgrade+0x820/0x820 [ 149.620364][ T6876] ? __fget_files+0x294/0x400 [ 149.625023][ T6876] ? __fget_light+0xea/0x280 [ 149.629595][ T6876] do_recvmmsg+0x24d/0x6d0 [ 149.633992][ T6876] ? ___sys_recvmsg+0x200/0x200 [ 149.638829][ T6876] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 149.644794][ T6876] ? lock_acquire+0x1f1/0xad0 [ 149.649454][ T6876] ? find_held_lock+0x2d/0x110 [ 149.654213][ T6876] ? calculate_sigpending+0x42/0xa0 [ 149.659479][ T6876] ? find_held_lock+0x2d/0x110 [ 149.664226][ T6876] __x64_sys_recvmmsg+0x20b/0x260 [ 149.669236][ T6876] ? __do_sys_socketcall+0x550/0x550 [ 149.674506][ T6876] ? lock_is_held_type+0xb0/0xe0 [ 149.679429][ T6876] ? do_syscall_64+0x1c/0xe0 [ 149.684007][ T6876] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 149.689969][ T6876] do_syscall_64+0x60/0xe0 [ 149.694379][ T6876] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 149.700258][ T6876] RIP: 0033:0x446cd9 [ 149.704127][ T6876] Code: Bad RIP value. [ 149.708261][ T6876] RSP: 002b:00007f42cfd77d98 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 149.716655][ T6876] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000446cd9 [ 149.724616][ T6876] RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000003 [ 149.732570][ T6876] RBP: 00000000006dcc30 R08: 0000000000000000 R09: 0000000000000000 [ 149.740523][ T6876] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 149.748479][ T6876] R13: 0000000000000007 R14: 0000000100000110 R15: 0000000000000018 [ 149.757829][ T6876] Kernel Offset: disabled [ 149.762160][ T6876] Rebooting in 86400 seconds..