general protection fault in show

duplicates (3):
Title	Repro	Count	Last	Reported	Patched	Status
BUG: unable to handle kernel paging request in show_timer fs	C	22	2558d	2575d	0/28	closed as dup on 2017/12/11 23:13
KASAN: global-out-of-bounds Read in show_timer fs	C	165	2559d	2577d	0/28	closed as dup on 2017/12/11 23:14
general protection fault in string fs	C	40	2558d	2577d	0/28	closed as dup on 2017/12/11 23:11

kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3087 Comm: syzkaller620885 Not tainted 4.15.0-rc2+ #210 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:show_timer+0x1c7/0x2b0 fs/proc/base.c:2274 RSP: 0018:ffff8801cb97fac8 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff8801cbf26e00 RCX: ffffffff81ccd0ee RDX: 0000000050a6853d RSI: ffffffff85f1a0e0 RDI: 00000002853429e8 RBP: ffff8801cb97faf8 R08: ffffed0039747165 R09: ffffed0039747165 R10: ffff8801cb8d8200 R11: ffffed0039747164 R12: 0000000060000001 R13: ffff8801cbd71a80 R14: ffffffff85341aa0 R15: 0000000000000c0f FS: 0000000001e9f880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b15000 CR3: 00000001cb879000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: seq_read+0x385/0x13d0 fs/seq_file.c:234 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 vfs_readv+0x121/0x1c0 fs/read_write.c:959 do_preadv+0x11b/0x1a0 fs/read_write.c:1043 SYSC_preadv fs/read_write.c:1093 [inline] SyS_preadv+0x30/0x40 fs/read_write.c:1088 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x440159 RSP: 002b:00007fff1f147728 EFLAGS: 00000217 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007fff1f147730 RCX: 0000000000440159 RDX: 0000000000000001 RSI: 0000000020b15000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 65732f636f72702f R09: 65732f636f72702f R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401a20 R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 f2 26 a3 ff 4a 8d 3c e5 e0 29 34 85 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 00 00 00 4a 8b 14 e5 e0 29 34 85 4c 89 ef RIP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2274 RSP: ffff8801cb97fac8 ---[ end trace f34776c6bf8284e1 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Manager
2017/12/07 02:38	upstream	e56d565d67ae	5d643f8e	.config	console log	report	syz	C	ci-upstream-kasan-gce
2017/12/04 07:51	upstream	ae64f9bd1d36	48359b97	.config	console log	report	syz	C	ci-upstream-kasan-gce-386
2017/12/08 01:22	linux-next	e40fd8d6b4d9	5d643f8e	.config	console log	report	syz	C	ci-upstream-next-kasan-gce
2017/12/04 03:16	mmots	4131d5166185	29b0fd90	.config	console log	report	syz	C	ci-upstream-mmots-kasan-gce
2017/12/11 11:21	upstream	50c4c4e268a2	5ad0ce95	.config	console log	report			ci-upstream-kasan-gce
2017/11/29 19:53	upstream	43570f0383d6	34f2c233	.config	console log	report			ci-upstream-kasan-gce-386
2017/12/19 05:15	mmots	82bcf1def3b5	1c4160ef	.config	console log	report			ci-upstream-mmots-kasan-gce
2017/12/04 02:48	mmots	4131d5166185	29b0fd90	.config	console log	report			ci-upstream-mmots-kasan-gce
2017/11/30 23:15	linux-next	11fed7829bef	29b0fd90	.config	console log	report			ci-upstream-next-kasan-gce
2017/11/30 16:23	linux-next	11fed7829bef	29b0fd90	.config	console log	report			ci-upstream-next-kasan-gce