Warning: Permanently added '10.128.0.241' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.249512][ T8489] divide error: 0000 [#1] PREEMPT SMP KASAN [ 62.255710][ T8489] CPU: 1 PID: 8489 Comm: syz-executor726 Not tainted 5.10.0-rc4-syzkaller #0 [ 62.264439][ T8489] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.274565][ T8489] RIP: 0010:__tcp_select_window+0x509/0xa60 [ 62.280432][ T8489] Code: 44 89 ff e8 29 35 fb f9 45 39 e7 0f 8d 20 ff ff ff e8 4b 3d fb f9 44 89 e3 e9 13 ff ff ff e8 3e 3d fb f9 44 89 e0 44 89 e3 99 7c 24 04 29 d3 e9 fc fe ff ff e8 27 3d fb f9 44 89 f1 48 89 ea [ 62.300010][ T8489] RSP: 0018:ffffc90003aaf678 EFLAGS: 00010293 [ 62.306051][ T8489] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8774f250 [ 62.313996][ T8489] RDX: 0000000000000000 RSI: ffffffff8774f2b2 RDI: 0000000000000004 [ 62.321940][ T8489] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888018dc020b [ 62.329885][ T8489] R10: 0000000000000000 R11: 1ffffffff1cfe604 R12: 0000000000000000 [ 62.337830][ T8489] R13: 1ffff92000755ed3 R14: 0000000000000000 R15: 0000000000000000 [ 62.345776][ T8489] FS: 0000000002359880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 62.354678][ T8489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.361236][ T8489] CR2: 00000000200000c0 CR3: 0000000011561000 CR4: 00000000001506e0 [ 62.369196][ T8489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.377141][ T8489] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.385088][ T8489] Call Trace: [ 62.388352][ T8489] ? tcp_schedule_loss_probe+0x70/0x70 [ 62.393784][ T8489] ? do_raw_spin_lock+0x120/0x2b0 [ 62.398782][ T8489] ? mark_held_locks+0x9f/0xe0 [ 62.403523][ T8489] tcp_cleanup_rbuf+0x486/0x5b0 [ 62.408350][ T8489] mptcp_send_ack+0x165/0x1b0 [ 62.413010][ T8489] mptcp_recvmsg+0x1081/0x1ab0 [ 62.417754][ T8489] ? mptcp_timeout_timer+0x1d0/0x1d0 [ 62.423030][ T8489] ? aa_sk_perm+0x316/0xaa0 [ 62.427507][ T8489] inet_recvmsg+0x11b/0x5d0 [ 62.431983][ T8489] ? inet_sendpage+0x140/0x140 [ 62.436724][ T8489] ? bpf_lsm_socket_recvmsg+0x5/0x10 [ 62.441981][ T8489] ? security_socket_recvmsg+0x8f/0xc0 [ 62.447412][ T8489] ? inet_sendpage+0x140/0x140 [ 62.452168][ T8489] ____sys_recvmsg+0x2c4/0x600 [ 62.456905][ T8489] ? move_addr_to_kernel.part.0+0x110/0x110 [ 62.462771][ T8489] ? __import_iovec+0x293/0x500 [ 62.467616][ T8489] ? import_iovec+0x10c/0x150 [ 62.472267][ T8489] ___sys_recvmsg+0x127/0x200 [ 62.476918][ T8489] ? __copy_msghdr_from_user+0x4b0/0x4b0 [ 62.482526][ T8489] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 62.488495][ T8489] ? lock_chain_count+0x20/0x20 [ 62.493357][ T8489] ? find_held_lock+0x2d/0x110 [ 62.498114][ T8489] ? do_huge_pmd_anonymous_page+0x12cc/0x2050 [ 62.504183][ T8489] ? lock_downgrade+0x6d0/0x6d0 [ 62.509007][ T8489] ? __fget_light+0x215/0x280 [ 62.513658][ T8489] do_recvmmsg+0x24d/0x6c0 [ 62.518050][ T8489] ? ___sys_recvmsg+0x200/0x200 [ 62.522871][ T8489] ? find_held_lock+0x2d/0x110 [ 62.527633][ T8489] ? vmacache_update+0xce/0x140 [ 62.532458][ T8489] __x64_sys_recvmmsg+0x20b/0x260 [ 62.537470][ T8489] ? __do_sys_socketcall+0x590/0x590 [ 62.542785][ T8489] ? syscall_enter_from_user_mode+0x1d/0x50 [ 62.548651][ T8489] do_syscall_64+0x2d/0x70 [ 62.553041][ T8489] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.558919][ T8489] RIP: 0033:0x4402c9 [ 62.562788][ T8489] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.582452][ T8489] RSP: 002b:00007ffe3c286d58 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 62.590847][ T8489] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 62.598795][ T8489] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 62.606794][ T8489] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 62.614741][ T8489] R10: 0000000000000100 R11: 0000000000000246 R12: 0000000000401ad0 [ 62.623351][ T8489] R13: 0000000000401b60 R14: 0000000000000000 R15: 0000000000000000 [ 62.631301][ T8489] Modules linked in: [ 62.635586][ T8489] ---[ end trace 565476b36a831272 ]--- [ 62.641594][ T8489] RIP: 0010:__tcp_select_window+0x509/0xa60 [ 62.647534][ T8489] Code: 44 89 ff e8 29 35 fb f9 45 39 e7 0f 8d 20 ff ff ff e8 4b 3d fb f9 44 89 e3 e9 13 ff ff ff e8 3e 3d fb f9 44 89 e0 44 89 e3 99 7c 24 04 29 d3 e9 fc fe ff ff e8 27 3d fb f9 44 89 f1 48 89 ea [ 62.667539][ T8489] RSP: 0018:ffffc90003aaf678 EFLAGS: 00010293 [ 62.673721][ T8489] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8774f250 [ 62.681696][ T8489] RDX: 0000000000000000 RSI: ffffffff8774f2b2 RDI: 0000000000000004 [ 62.689681][ T8489] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888018dc020b [ 62.697674][ T8489] R10: 0000000000000000 R11: 1ffffffff1cfe604 R12: 0000000000000000 [ 62.705661][ T8489] R13: 1ffff92000755ed3 R14: 0000000000000000 R15: 0000000000000000 [ 62.713650][ T8489] FS: 0000000002359880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 62.722580][ T8489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.729193][ T8489] CR2: 00007f640c03d028 CR3: 0000000011561000 CR4: 00000000001506e0 [ 62.737325][ T8489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.745424][ T8489] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.753530][ T8489] Kernel panic - not syncing: Fatal exception [ 62.760289][ T8489] Kernel Offset: disabled [ 62.764600][ T8489] Rebooting in 86400 seconds..