Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. executing program [ 20.442758] kasan: CONFIG_KASAN_INLINE enabled [ 20.447418] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 20.454756] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 20.460956] Dumping ftrace buffer: [ 20.464462] (ftrace buffer empty) [ 20.468151] Modules linked in: [ 20.471438] CPU: 0 PID: 3796 Comm: syzkaller821956 Not tainted 4.9.83-ga92bb8d #43 [ 20.479119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.488444] task: ffff8801b50fc800 task.stack: ffff8801bc1f0000 [ 20.494481] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 20.502726] RSP: 0018:ffff8801bc1f7950 EFLAGS: 00010a07 [ 20.508143] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff826687fb [ 20.515382] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 20.522623] RBP: ffff8801bc1f7960 R08: 0000000000000001 R09: 0000000000000000 [ 20.529862] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 20.537101] R13: 0000000000000020 R14: ffff8801b2502100 R15: dffffc0000000000 [ 20.544350] FS: 000000000169f880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 20.552545] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.558394] CR2: 000000000043e5a0 CR3: 00000001d8bbc000 CR4: 0000000000160670 [ 20.565652] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.572904] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.580141] Stack: [ 20.582257] ffff8801b50fc800 ffff8801b2502258 ffff8801bc1f79c0 ffffffff82668821 [ 20.590217] ffff8801b2502270 ffffed00364a044b ffffed00364a044e ffff8801b2502268 [ 20.598180] dead4ead00000000 ffff8801b2502240 0000000000000000 0000000000000000 [ 20.606152] Call Trace: [ 20.608710] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 20.615343] [] sg_finish_rem_req+0x2b5/0x340 [ 20.621367] [] sg_new_read.isra.20+0x39/0x3e0 [ 20.628334] [] ? sg_get_rq_mark+0x142/0x190 [ 20.634275] [] sg_read+0x8b7/0x1440 [ 20.639520] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 20.646152] [] ? fsnotify+0xf30/0xf30 [ 20.651571] [] ? avc_policy_seqno+0x9/0x20 [ 20.657426] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 20.664405] [] ? security_file_permission+0x89/0x1e0 [ 20.671125] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 20.677756] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 20.684390] [] do_readv_writev+0x520/0x750 [ 20.690248] [] ? vfs_write+0x530/0x530 [ 20.695762] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 20.702658] [] ? sg_ioctl+0x2a00/0x2a00 [ 20.708247] [] ? do_iter_readv_writev+0x400/0x400 [ 20.714705] [] ? __might_sleep+0x95/0x1a0 [ 20.720474] [] ? __inode_security_revalidate+0xd9/0x130 [ 20.727453] [] ? __fsnotify_parent+0xbc/0x340 [ 20.733569] [] ? avc_policy_seqno+0x9/0x20 [ 20.739421] [] ? fsnotify+0x86/0xf30 [ 20.744750] [] ? fsnotify+0xf30/0xf30 [ 20.750167] [] vfs_readv+0x84/0xc0 [ 20.755327] [] do_readv+0xe6/0x250 [ 20.760482] [] ? vfs_readv+0xc0/0xc0 [ 20.765811] [] ? SyS_read+0x1b0/0x1b0 [ 20.771243] [] SyS_readv+0x27/0x30 [ 20.776415] [] ? rw_copy_check_uvector+0x2c0/0x2c0 [ 20.782960] [] do_syscall_64+0x1a4/0x490 [ 20.788638] [] entry_SYSCALL_64_after_swapgs+0x47/0xc5 [ 20.795532] 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 [ 20.822214] RIP [] __free_pages+0x21/0x80 [ 20.828097] RSP [ 20.831989] ---[ end trace 16e49edcbd37fb59 ]--- [ 20.836729] Kernel panic - not syncing: Fatal exception [ 20.842456] Dumping ftrace buffer: [ 20.845974] (ftrace buffer empty) [ 20.849651] Kernel Offset: disabled [ 20.853244] Rebooting in 86400 seconds..