Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.836908] kasan: CONFIG_KASAN_INLINE enabled [ 27.841545] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.848967] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.855170] Dumping ftrace buffer: [ 27.858677] (ftrace buffer empty) [ 27.862360] Modules linked in: [ 27.865637] CPU: 1 PID: 3801 Comm: syzkaller793101 Not tainted 4.9.85-ge0b05e6 #49 [ 27.873310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.882635] task: ffff8801d74c0000 task.stack: ffff8801d7510000 [ 27.888659] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 27.896889] RSP: 0018:ffff8801d7517940 EFLAGS: 00010a07 [ 27.902303] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82668efb [ 27.909543] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 27.916785] RBP: ffff8801d7517950 R08: 0000000048000000 R09: 0000000000001e30 [ 27.924028] R10: 0000000000002100 R11: ffff8801d74c0000 R12: 0000000000000004 [ 27.931270] R13: 0000000000000020 R14: ffff8801d743a100 R15: dffffc0000000000 [ 27.938515] FS: 00007f7ee133f700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 27.946711] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.952561] CR2: 00007f7ee133ee78 CR3: 00000001da376000 CR4: 0000000000160670 [ 27.959804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.967044] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.974281] Stack: [ 27.976398] 0000000000000001 ffff8801d743a258 ffff8801d75179b0 ffffffff82668f21 [ 27.984363] ffff8801d743a270 ffffed003ae8744b ffffed003ae8744e ffff8801d743a268 [ 27.992324] dead4ead00000000 ffff8801d743a240 0000000000000000 0000000000000000 [ 28.000282] Call Trace: [ 28.002842] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 28.009304] [] sg_finish_rem_req+0x2b5/0x340 [ 28.015339] [] sg_new_read.isra.20+0x18d/0x3e0 [ 28.021539] [] sg_read+0x8b7/0x1440 [ 28.026792] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 28.033430] [] ? fsnotify+0x86/0xf30 [ 28.038763] [] ? fsnotify+0xf30/0xf30 [ 28.044184] [] ? avc_policy_seqno+0x9/0x20 [ 28.050045] [] do_loop_readv_writev.part.17+0xc8/0x2b0 [ 28.056942] [] do_readv_writev+0x5fd/0x740 [ 28.062792] [] ? vfs_write+0x530/0x530 [ 28.068295] [] ? __fget+0x20a/0x3b0 [ 28.073538] [] ? __fget+0x231/0x3b0 [ 28.078782] [] ? __fget+0x47/0x3b0 [ 28.083939] [] vfs_readv+0x84/0xc0 [ 28.089095] [] do_readv+0xe6/0x250 [ 28.094254] [] ? vfs_readv+0xc0/0xc0 [ 28.099589] [] ? _raw_spin_unlock_irq+0x27/0x50 [ 28.105879] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 28.112688] [] SyS_readv+0x27/0x30 [ 28.117846] [] ? rw_copy_check_uvector+0x2c0/0x2c0 [ 28.124394] [] do_syscall_64+0x1a4/0x490 [ 28.130071] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 28.136960] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 28.163674] RIP [] __free_pages+0x21/0x80 [ 28.169559] RSP [ 28.173249] ---[ end trace d79982f295f73ec6 ]--- [ 28.177976] Kernel panic - not syncing: Fatal exception [ 28.183659] Dumping ftrace buffer: [ 28.187166] (ftrace buffer empty) [ 28.190844] Kernel Offset: disabled [ 28.194441] Rebooting in 86400 seconds..