IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7226 at net/kcm/kcmsock.c:629 kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Modules linked in: CPU: 1 PID: 7226 Comm: syz-executor.5 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kcm_write_msgs.cold.34+0x5f/0x13e net/kcm/kcmsock.c:629 Code: c7 c7 a0 8e d0 87 4c 89 5d d0 e8 cb 2f ec ff 0f 0b 4c 8b 5d d0 e9 06 bd 5f ff 48 c7 c7 a0 8e d0 87 4c 89 5d d0 e8 b0 2f ec ff <0f> 0b 8b 85 7c ff ff ff ba ea ff ff ff 4c 8b 5d d0 89 45 c4 e9 60 RSP: 0018:ffff8881d76df8f8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d84c0b00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767ae60 RDI: ffffffff8a1899a0 RBP: ffff8881d76df9b8 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: 00000000000000c0 R13: ffff8881d74238c0 R14: ffff8881d7d2d0c0 R15: ffff8881d84c0a40 FS: 00007f19b0668700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000053c000 CR3: 00000001d79dc004 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_sendmsg+0x1897/0x25b0 net/kcm/kcmsock.c:1035 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:632 sock_write_iter+0x215/0x420 net/socket.c:901 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f19b0668198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000c4c RCX: 00000000004641a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f19b06686bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 6160 hardirqs last enabled at (6159): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (6159): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (6160): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (6154): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (6143): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (6143): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace f699fe6e1de89943 ]--- KCM: Hard failure on kcm_write_msgs ======================================================