syzbot


WARNING in copy_page_from_iter

Status: upstream: reported C repro on 2023/03/15 03:16
Labels: block (incorrect?)
Reported-by: syzbot+63dec323ac56c28e644f@syzkaller.appspotmail.com
First crash: 79d, last: 6h47m

Cause bisection: introduced by (bisect log) :
commit a41dad905e5a388f88435a517de102e9b2c8e43d
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri Sep 16 00:11:15 2022 +0000

  iov_iter: saner checks for attempt to copy to/from iterator

Crash: WARNING in copy_page_from_iter (log)
Repro: C syz .config
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly block report (May 2023) 0 (1) 2023/05/05 08:06
[syzbot] Monthly block report 0 (1) 2023/04/03 16:00
[syzbot] [block?] WARNING in copy_page_from_iter 0 (1) 2023/03/15 03:16
Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/03/15 09:12 19m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4998 at lib/iov_iter.c:644 _copy_from_iter+0x2f3/0x1290 lib/iov_iter.c:644
Modules linked in:
CPU: 1 PID: 4998 Comm: syz-executor266 Not tainted 6.4.0-rc4-syzkaller-00099-g1874a42a7d74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:_copy_from_iter+0x2f3/0x1290 lib/iov_iter.c:644
Code: 72 ff ff 89 c3 e9 23 ff ff ff e8 d8 d4 72 fd be 88 02 00 00 48 c7 c7 80 bd a6 8a e8 f7 e2 af fd e9 17 fe ff ff e8 bd d4 72 fd <0f> 0b 45 31 ff e9 6b ff ff ff e8 ae d4 72 fd 31 ff 89 ee e8 85 d0
RSP: 0018:ffffc90003aff688 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888029a23b80 RSI: ffffffff84116f63 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8a0f5e59 R12: 0000000000000021
R13: ffffea000065e200 R14: ffffc90003aff8c0 R15: 0000000000000021
FS:  0000555557450300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7a85f1b10 CR3: 0000000021676000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 copy_page_from_iter lib/iov_iter.c:805 [inline]
 copy_page_from_iter+0x9f/0x110 lib/iov_iter.c:794
 bio_copy_from_iter block/blk-map.c:56 [inline]
 bio_copy_user_iov block/blk-map.c:211 [inline]
 blk_rq_map_user_iov+0xb55/0x16d0 block/blk-map.c:662
 blk_rq_map_user block/blk-map.c:691 [inline]
 blk_rq_map_user_io+0x1cd/0x200 block/blk-map.c:724
 sg_start_req drivers/scsi/sg.c:1807 [inline]
 sg_common_write.constprop.0+0xdcd/0x1e00 drivers/scsi/sg.c:803
 sg_new_write.isra.0+0x522/0xa90 drivers/scsi/sg.c:770
 sg_ioctl_common drivers/scsi/sg.c:935 [inline]
 sg_ioctl+0x9a8/0x2700 drivers/scsi/sg.c:1159
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1b286776c9
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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
RSP: 002b:00007ffe4c931ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1b286776c9
RDX: 0000000020000180 RSI: 0000000000002285 RDI: 0000000000000003
RBP: 00007f1b286371d0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ffff R11: 0000000000000246 R12: 00007f1b28637260
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (598):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/06/02 08:10 upstream 1874a42a7d74 a4ae4f42 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in copy_page_from_iter
2023/03/14 18:43 upstream fc89d7fb499b 0d5c4377 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/04/01 05:17 linux-next 4b0f4525dc4f f325deb0 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/06/01 12:45 upstream 929ed21dfdb6 babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in copy_page_from_iter
2023/05/31 23:26 upstream 48b1320a674e e2a77acd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/30 19:26 upstream 8b817fded42d 8d5c7541 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in copy_page_from_iter
2023/05/30 16:31 upstream 8b817fded42d 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in copy_page_from_iter
2023/05/30 15:40 upstream 8b817fded42d 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/29 14:52 upstream e338142b39cf cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in copy_page_from_iter
2023/05/29 06:05 upstream 7877cb91f108 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/28 21:45 upstream 416839029e38 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/28 21:43 upstream 7877cb91f108 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in copy_page_from_iter
2023/05/28 07:33 upstream 4e893b5aa4ac cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/28 05:49 upstream 4e893b5aa4ac cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/28 03:24 upstream 4e893b5aa4ac cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in copy_page_from_iter
2023/05/27 15:55 upstream 49572d536129 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/27 05:37 upstream 91a304340a22 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in copy_page_from_iter
2023/05/27 00:28 upstream 0d85b27b0cc6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/26 23:11 upstream 0d85b27b0cc6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/26 21:04 upstream 0d85b27b0cc6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/26 21:00 upstream 0d85b27b0cc6 b0e6aca7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in copy_page_from_iter
2023/05/25 07:36 upstream 933174ae28ba 4bce1a3e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in copy_page_from_iter
2023/05/25 01:59 upstream 9d646009f65d 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/24 11:40 upstream 27e462c8fad4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in copy_page_from_iter
2023/05/23 19:39 upstream ae8373a5add4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/23 07:36 upstream 421ca22e3138 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/23 04:37 upstream 421ca22e3138 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/22 08:31 upstream e2065b8c1b01 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/21 17:38 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/21 13:21 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/20 16:31 upstream d635f6cc934b 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in copy_page_from_iter
2023/05/20 15:04 upstream d635f6cc934b 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/20 13:05 upstream 5565ec4ef4f0 96689200 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in copy_page_from_iter
2023/05/20 03:26 upstream cbd6ac3837cd 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/20 00:41 upstream cbd6ac3837cd 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in copy_page_from_iter
2023/05/19 22:09 upstream cbd6ac3837cd 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in copy_page_from_iter
2023/05/19 13:48 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/19 12:26 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/19 10:53 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/19 09:33 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/19 08:21 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/19 01:07 upstream 4d6d4c7f541d 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in copy_page_from_iter
2023/05/18 21:57 upstream 4d6d4c7f541d 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in copy_page_from_iter
2023/05/18 11:42 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/18 09:10 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in copy_page_from_iter
2023/05/18 07:42 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in copy_page_from_iter
2023/05/18 06:02 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in copy_page_from_iter
2023/05/17 06:13 upstream f1fcbaa18b28 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in copy_page_from_iter
2023/05/17 03:50 upstream f1fcbaa18b28 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in copy_page_from_iter
2023/05/26 15:09 upstream 0d85b27b0cc6 b40ef614 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in copy_page_from_iter
2023/05/23 20:41 upstream ae8373a5add4 4bce1a3e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in copy_page_from_iter
2023/05/30 17:59 linux-next 715abedee4cd 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/05/29 01:02 linux-next 715abedee4cd cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/05/22 05:23 linux-next 715abedee4cd 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/05/20 17:50 linux-next 715abedee4cd 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/05/19 05:02 linux-next 715abedee4cd 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
2023/05/18 09:05 linux-next 715abedee4cd 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in copy_page_from_iter
* Struck through repros no longer work on HEAD.