Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.130469][ T8423] general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN [ 76.142215][ T8423] KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] [ 76.150620][ T8423] CPU: 1 PID: 8423 Comm: syz-executor788 Not tainted 5.13.0-rc3-syzkaller #0 [ 76.159384][ T8423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.169437][ T8423] RIP: 0010:kcm_sendmsg+0xdd7/0x2240 [ 76.174749][ T8423] Code: fb 05 0f 84 25 0b 00 00 e8 b6 f3 48 f9 48 8b 44 24 18 4c 8d a8 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00 [ 76.194471][ T8423] RSP: 0018:ffffc900017ef9b8 EFLAGS: 00010202 [ 76.200539][ T8423] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 76.208501][ T8423] RDX: 0000000000000019 RSI: ffffffff882be8ca RDI: 0000000000000003 [ 76.216469][ T8423] RBP: ffff8880361685aa R08: 0000000000000000 R09: 0000000000000000 [ 76.224460][ T8423] R10: ffffffff882bec2b R11: 0000000000000000 R12: 00000000fffffe00 [ 76.232425][ T8423] R13: 00000000000000c8 R14: ffff88802ab74540 R15: ffff888036168000 [ 76.240397][ T8423] FS: 0000000000c0e300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 76.249338][ T8423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.255916][ T8423] CR2: 000055c4467bb930 CR3: 0000000023a8c000 CR4: 00000000001506e0 [ 76.264091][ T8423] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.272053][ T8423] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.280030][ T8423] Call Trace: [ 76.283335][ T8423] ? aa_sk_perm+0x31b/0xab0 [ 76.287956][ T8423] ? kcm_tx_work+0x160/0x160 [ 76.292567][ T8423] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.298839][ T8423] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.305082][ T8423] ? kcm_tx_work+0x160/0x160 [ 76.309691][ T8423] sock_sendmsg+0xcf/0x120 [ 76.314130][ T8423] ____sys_sendmsg+0x6e8/0x810 [ 76.318937][ T8423] ? kernel_sendmsg+0x50/0x50 [ 76.323630][ T8423] ? do_recvmmsg+0x6d0/0x6d0 [ 76.328238][ T8423] ? lock_chain_count+0x20/0x20 [ 76.333139][ T8423] ___sys_sendmsg+0xf3/0x170 [ 76.337760][ T8423] ? sendmsg_copy_msghdr+0x160/0x160 [ 76.343064][ T8423] ? __lock_acquire+0x16a7/0x5230 [ 76.348125][ T8423] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.354127][ T8423] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.360163][ T8423] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 76.366478][ T8423] ? __fget_light+0x215/0x280 [ 76.371377][ T8423] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 76.377652][ T8423] __sys_sendmsg+0xe5/0x1b0 [ 76.382168][ T8423] ? __sys_sendmsg_sock+0x30/0x30 [ 76.387209][ T8423] ? syscall_enter_from_user_mode+0x27/0x70 [ 76.393146][ T8423] do_syscall_64+0x3a/0xb0 [ 76.397578][ T8423] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 76.403506][ T8423] RIP: 0033:0x43fcb9 [ 76.407432][ T8423] 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 c0 ff ff ff f7 d8 64 89 01 48 [ 76.427056][ T8423] RSP: 002b:00007fff00f21778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.435491][ T8423] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043fcb9 [ 76.443477][ T8423] RDX: 0000000000000000 RSI: 0000000020001c80 RDI: 0000000000000003 [ 76.451462][ T8423] RBP: 0000000000000000 R08: 00007fff00f21918 R09: 00007fff00f21918 [ 76.459453][ T8423] R10: 00007fff00f21918 R11: 0000000000000246 R12: 0000000000403540 [ 76.467439][ T8423] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 76.475431][ T8423] Modules linked in: [ 76.480212][ T8423] ---[ end trace 458d0f6d0de61f61 ]--- [ 76.486240][ T8423] RIP: 0010:kcm_sendmsg+0xdd7/0x2240 [ 76.491555][ T8423] Code: fb 05 0f 84 25 0b 00 00 e8 b6 f3 48 f9 48 8b 44 24 18 4c 8d a8 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00 [ 76.511708][ T8423] RSP: 0018:ffffc900017ef9b8 EFLAGS: 00010202 [ 76.517831][ T8423] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 76.525861][ T8423] RDX: 0000000000000019 RSI: ffffffff882be8ca RDI: 0000000000000003 [ 76.534053][ T8423] RBP: ffff8880361685aa R08: 0000000000000000 R09: 0000000000000000 [ 76.542166][ T8423] R10: ffffffff882bec2b R11: 0000000000000000 R12: 00000000fffffe00 [ 76.550208][ T8423] R13: 00000000000000c8 R14: ffff88802ab74540 R15: ffff888036168000 [ 76.558224][ T8423] FS: 0000000000c0e300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 76.567226][ T8423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.573817][ T8423] CR2: 0000000000c0e2c0 CR3: 0000000023a8c000 CR4: 00000000001506f0 [ 76.581835][ T8423] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.589894][ T8423] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.598164][ T8423] Kernel panic - not syncing: Fatal exception [ 76.604824][ T8423] Kernel Offset: disabled [ 76.609141][ T8423] Rebooting in 86400 seconds..