Warning: Permanently added '10.128.0.243' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.753596][ T6529] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 73.765360][ T6529] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 73.773757][ T6529] CPU: 0 PID: 6529 Comm: syz-executor728 Not tainted 5.16.0-rc3-syzkaller #0 [ 73.782504][ T6529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.792543][ T6529] RIP: 0010:__lock_acquire+0xd7d/0x54a0 [ 73.798098][ T6529] Code: 10 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 99 6c 10 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 f3 2f 00 00 48 81 3b 20 15 18 8f 0f 84 52 f3 ff [ 73.817694][ T6529] RSP: 0018:ffffc90001a9f818 EFLAGS: 00010006 [ 73.823747][ T6529] RAX: dffffc0000000000 RBX: 0000000000000018 RCX: 0000000000000000 [ 73.831706][ T6529] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 73.839664][ T6529] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 73.847623][ T6529] R10: 0000000000000000 R11: 000000000000000a R12: 0000000000000000 [ 73.855587][ T6529] R13: ffff88801af6d700 R14: 0000000000000000 R15: 0000000000000001 [ 73.863547][ T6529] FS: 00007f4098b1d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 73.872477][ T6529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.879047][ T6529] CR2: 00007f4098afb268 CR3: 00000000726e5000 CR4: 00000000003506f0 [ 73.887007][ T6529] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.894977][ T6529] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.902936][ T6529] Call Trace: [ 73.906201][ T6529] [ 73.909119][ T6529] ? __lock_acquire+0x162f/0x54a0 [ 73.914142][ T6529] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.920116][ T6529] ? mark_lock+0xef/0x17b0 [ 73.924524][ T6529] lock_acquire+0x1ab/0x510 [ 73.929019][ T6529] ? finish_wait+0xc0/0x270 [ 73.933512][ T6529] ? lock_release+0x720/0x720 [ 73.938178][ T6529] ? find_held_lock+0x2d/0x110 [ 73.942931][ T6529] ? inet_csk_accept+0x3e1/0x9d0 [ 73.947876][ T6529] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 73.953241][ T6529] _raw_spin_lock_irqsave+0x39/0x50 [ 73.958429][ T6529] ? finish_wait+0xc0/0x270 [ 73.962922][ T6529] finish_wait+0xc0/0x270 [ 73.967241][ T6529] inet_csk_accept+0x7de/0x9d0 [ 73.972001][ T6529] ? reqsk_put+0x2f0/0x2f0 [ 73.976410][ T6529] ? release_sock+0x1b/0x1b0 [ 73.980991][ T6529] ? finish_wait+0x270/0x270 [ 73.985573][ T6529] mptcp_accept+0xe5/0x500 [ 73.989992][ T6529] inet_accept+0xe4/0x7b0 [ 73.994336][ T6529] ? rwlock_bug.part.0+0x90/0x90 [ 73.999268][ T6529] ? inet_sock_destruct+0x880/0x880 [ 74.004456][ T6529] ? __local_bh_enable_ip+0xa0/0x120 [ 74.009735][ T6529] mptcp_stream_accept+0x2e7/0x10e0 [ 74.014929][ T6529] ? do_raw_spin_unlock+0x171/0x230 [ 74.020117][ T6529] ? mptcp_subflow_delegate.constprop.0+0x440/0x440 [ 74.026713][ T6529] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.032953][ T6529] do_accept+0x382/0x510 [ 74.037188][ T6529] ? __ia32_sys_listen+0x70/0x70 [ 74.042118][ T6529] ? rwlock_bug.part.0+0x90/0x90 [ 74.047046][ T6529] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.053279][ T6529] ? _find_next_bit+0x1e3/0x260 [ 74.058138][ T6529] ? do_raw_spin_unlock+0x171/0x230 [ 74.063328][ T6529] ? _raw_spin_unlock+0x24/0x40 [ 74.068166][ T6529] ? alloc_fd+0x2f0/0x670 [ 74.072490][ T6529] __sys_accept4_file+0x7e/0xe0 [ 74.077337][ T6529] __sys_accept4+0xb0/0x100 [ 74.081841][ T6529] __x64_sys_accept+0x71/0xb0 [ 74.086514][ T6529] ? syscall_enter_from_user_mode+0x21/0x70 [ 74.092407][ T6529] do_syscall_64+0x35/0xb0 [ 74.096814][ T6529] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.102699][ T6529] RIP: 0033:0x7f4098b6b8e9 [ 74.107103][ T6529] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 74.126699][ T6529] RSP: 002b:00007f4098b1d308 EFLAGS: 00000246 ORIG_RAX: 000000000000002b [ 74.135100][ T6529] RAX: ffffffffffffffda RBX: 00007f4098bf3408 RCX: 00007f4098b6b8e9 [ 74.143058][ T6529] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 74.151015][ T6529] RBP: 00007f4098bf3400 R08: 0000000000000000 R09: 0000000000000000 [ 74.158972][ T6529] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4098bf340c [ 74.166932][ T6529] R13: 00007f4098bc1004 R14: 6d705f706374706d R15: 0000000000022000 [ 74.174898][ T6529] [ 74.177903][ T6529] Modules linked in: [ 74.181785][ T6529] ---[ end trace ae130c167cb4c53b ]--- [ 74.187221][ T6529] RIP: 0010:__lock_acquire+0xd7d/0x54a0 [ 74.192762][ T6529] Code: 10 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 99 6c 10 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 f3 2f 00 00 48 81 3b 20 15 18 8f 0f 84 52 f3 ff [ 74.212357][ T6529] RSP: 0018:ffffc90001a9f818 EFLAGS: 00010006 [ 74.218412][ T6529] RAX: dffffc0000000000 RBX: 0000000000000018 RCX: 0000000000000000 [ 74.226371][ T6529] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 74.234330][ T6529] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 74.242287][ T6529] R10: 0000000000000000 R11: 000000000000000a R12: 0000000000000000 [ 74.250243][ T6529] R13: ffff88801af6d700 R14: 0000000000000000 R15: 0000000000000001 [ 74.258200][ T6529] FS: 00007f4098b1d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.267118][ T6529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.273689][ T6529] CR2: 00007f4098afb268 CR3: 00000000726e5000 CR4: 00000000003506f0 [ 74.281649][ T6529] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.289611][ T6529] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.297580][ T6529] Kernel panic - not syncing: Fatal exception [ 74.303889][ T6529] Kernel Offset: disabled [ 74.308196][ T6529] Rebooting in 86400 seconds..