Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.330305][ T8443] loop0: detected capacity change from 0 to 4 [ 66.344754][ T8443] VFS: Found a V7 FS (block size = 512) on device loop0 [ 66.356423][ T8443] ------------[ cut here ]------------ [ 66.362994][ T8443] WARNING: CPU: 0 PID: 8443 at fs/inode.c:361 inc_nlink+0x144/0x160 [ 66.371768][ T8443] Modules linked in: [ 66.376263][ T8443] CPU: 1 PID: 8443 Comm: syz-executor844 Not tainted 5.13.0-rc1-next-20210512-syzkaller #0 [ 66.387985][ T8443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.399605][ T8443] RIP: 0010:inc_nlink+0x144/0x160 [ 66.404883][ T8443] Code: ff 4c 89 e7 e8 7d 89 ed ff e9 42 ff ff ff 4c 89 e7 e8 00 89 ed ff e9 fc fe ff ff 4c 89 e7 e8 f3 88 ed ff eb d4 e8 bc 41 a8 ff <0f> 0b e9 6e ff ff ff e8 f0 88 ed ff e9 44 ff ff ff e8 e6 88 ed ff [ 66.424789][ T8443] RSP: 0018:ffffc900015efdf0 EFLAGS: 00010293 [ 66.431166][ T8443] RAX: 0000000000000000 RBX: ffff8880373a0038 RCX: 0000000000000000 [ 66.440718][ T8443] RDX: ffff88801c6db900 RSI: ffffffff81ccb744 RDI: 0000000000000003 [ 66.449696][ T8443] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 66.458318][ T8443] R10: ffffffff81ccb6b0 R11: 0000000000000000 R12: ffff8880373a0080 [ 66.466416][ T8443] R13: ffff88803706d608 R14: ffffffff8995cf80 R15: 00000000000000a8 [ 66.474864][ T8443] FS: 0000000001da6300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.483986][ T8443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.490663][ T8443] CR2: 000055ff44c830f0 CR3: 0000000016a41000 CR4: 00000000001506e0 [ 66.498890][ T8443] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.506955][ T8443] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.514943][ T8443] Call Trace: [ 66.518319][ T8443] sysv_mkdir+0x21/0x150 [ 66.522597][ T8443] vfs_mkdir+0x52e/0x760 [ 66.522653][ T8443] do_mkdirat+0x284/0x310 [ 66.522683][ T8443] ? user_path_create+0xf0/0xf0 [ 66.522713][ T8443] ? syscall_enter_from_user_mode+0x27/0x70 [ 66.542296][ T8443] do_syscall_64+0x3a/0xb0 [ 66.546804][ T8443] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 66.552708][ T8443] RIP: 0033:0x443c39 [ 66.556682][ T8443] 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 c0 ff ff ff f7 d8 64 89 01 48 [ 66.581903][ T8443] RSP: 002b:00007ffdffd3cdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 66.590435][ T8443] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 0000000000443c39 [ 66.598784][ T8443] RDX: 00000000000000b8 RSI: 0000000020000040 RDI: 0000000000000005 [ 66.606842][ T8443] RBP: 00000000004034d0 R08: 0000000000000000 R09: 00000000004004a0 [ 66.614841][ T8443] R10: 00007ffdffd3cc80 R11: 0000000000000246 R12: 0000000000403560 [ 66.622937][ T8443] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0 [ 66.631049][ T8443] Kernel panic - not syncing: panic_on_warn set ... [ 66.637637][ T8443] CPU: 1 PID: 8443 Comm: syz-executor844 Not tainted 5.13.0-rc1-next-20210512-syzkaller #0 [ 66.647628][ T8443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.657673][ T8443] Call Trace: [ 66.660945][ T8443] dump_stack_lvl+0x13e/0x1d6 [ 66.665650][ T8443] panic+0x306/0x73d [ 66.669537][ T8443] ? __warn_printk+0xf3/0xf3 [ 66.674126][ T8443] ? __warn.cold+0x1a/0x44 [ 66.678536][ T8443] ? inc_nlink+0x144/0x160 [ 66.683034][ T8443] __warn.cold+0x35/0x44 [ 66.687268][ T8443] ? inc_nlink+0x144/0x160 [ 66.691675][ T8443] report_bug+0x1bd/0x210 [ 66.696089][ T8443] handle_bug+0x3c/0x60 [ 66.700265][ T8443] exc_invalid_op+0x14/0x40 [ 66.704773][ T8443] asm_exc_invalid_op+0x12/0x20 [ 66.709617][ T8443] RIP: 0010:inc_nlink+0x144/0x160 [ 66.714635][ T8443] Code: ff 4c 89 e7 e8 7d 89 ed ff e9 42 ff ff ff 4c 89 e7 e8 00 89 ed ff e9 fc fe ff ff 4c 89 e7 e8 f3 88 ed ff eb d4 e8 bc 41 a8 ff <0f> 0b e9 6e ff ff ff e8 f0 88 ed ff e9 44 ff ff ff e8 e6 88 ed ff [ 66.734254][ T8443] RSP: 0018:ffffc900015efdf0 EFLAGS: 00010293 [ 66.740411][ T8443] RAX: 0000000000000000 RBX: ffff8880373a0038 RCX: 0000000000000000 [ 66.748375][ T8443] RDX: ffff88801c6db900 RSI: ffffffff81ccb744 RDI: 0000000000000003 [ 66.756347][ T8443] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 66.764334][ T8443] R10: ffffffff81ccb6b0 R11: 0000000000000000 R12: ffff8880373a0080 [ 66.772394][ T8443] R13: ffff88803706d608 R14: ffffffff8995cf80 R15: 00000000000000a8 [ 66.780375][ T8443] ? inc_nlink+0xb0/0x160 [ 66.784810][ T8443] ? inc_nlink+0x144/0x160 [ 66.789235][ T8443] sysv_mkdir+0x21/0x150 [ 66.793479][ T8443] vfs_mkdir+0x52e/0x760 [ 66.797804][ T8443] do_mkdirat+0x284/0x310 [ 66.802135][ T8443] ? user_path_create+0xf0/0xf0 [ 66.806982][ T8443] ? syscall_enter_from_user_mode+0x27/0x70 [ 66.812870][ T8443] do_syscall_64+0x3a/0xb0 [ 66.817371][ T8443] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 66.823260][ T8443] RIP: 0033:0x443c39 [ 66.827253][ T8443] 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 c0 ff ff ff f7 d8 64 89 01 48 [ 66.847215][ T8443] RSP: 002b:00007ffdffd3cdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 66.855626][ T8443] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 0000000000443c39 [ 66.863673][ T8443] RDX: 00000000000000b8 RSI: 0000000020000040 RDI: 0000000000000005 [ 66.871634][ T8443] RBP: 00000000004034d0 R08: 0000000000000000 R09: 00000000004004a0 [ 66.879688][ T8443] R10: 00007ffdffd3cc80 R11: 0000000000000246 R12: 0000000000403560 [ 66.887649][ T8443] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0 [ 66.896552][ T8443] Kernel Offset: disabled [ 66.901073][ T8443] Rebooting in 86400 seconds..