[v6.1] WARNING in get_vaddr_frames

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 42616e0f09fb Linux 6.1.15
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16f99d92c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=690b9ff41783cd73
dashboard link: https://syzkaller.appspot.com/bug?extid=2f9f34d8ac9500d5fa13
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/db869f2ed2bd/disk-42616e0f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/37951bbe5829/vmlinux-42616e0f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/23aa1a75ce0f/bzImage-42616e0f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2f9f34...@syzkaller.appspotmail.com

get_vaddr_frames() cannot follow VM_IO mapping
WARNING: CPU: 1 PID: 5191 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Modules linked in:
CPU: 1 PID: 5191 Comm: syz-executor.1 Not tainted 6.1.15-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Code: 8c 1a ff ff ff 4c 89 e7 e8 82 85 d2 fa e9 0d ff ff ff e8 48 7a 7c fa c6 05 10 e1 30 07 01 48 c7 c7 80 8f a7 8b e8 65 dc 44 fa <0f> 0b e9 4a ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 1e ff
RSP: 0018:ffffc9000503f4a8 EFLAGS: 00010246
RAX: 247ba05aaa5f7400 RBX: 1ffff92002a00000 RCX: 0000000000040000
RDX: ffffc900063a1000 RSI: 0000000000018134 RDI: 0000000000018135
RBP: 0000000000080000 R08: ffffffff816dec4c R09: fffff52000a07e4d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90015000004
R13: dffffc0000000000 R14: 0000000000000000 R15: 00000000fffffff2
FS: 00007f4eb204d700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9d85ad988 CR3: 000000004883a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vb2_create_framevec+0x4a/0xb0 drivers/media/common/videobuf2/videobuf2-memops.c:50
vb2_vmalloc_get_userptr+0xe7/0x400 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88
__prepare_userptr drivers/media/common/videobuf2/videobuf2-core.c:1194 [inline]
__buf_prepare+0xc22/0x4460 drivers/media/common/videobuf2/videobuf2-core.c:1436
vb2_core_qbuf+0x2b4/0x1360 drivers/media/common/videobuf2/videobuf2-core.c:1738
vb2_qbuf+0x184/0x240 drivers/media/common/videobuf2/videobuf2-v4l2.c:816
v4l2_m2m_qbuf+0x1e0/0x7a0 drivers/media/v4l2-core/v4l2-mem2mem.c:773
__video_do_ioctl+0xa3a/0xe30 drivers/media/v4l2-core/v4l2-ioctl.c:3037
video_usercopy+0xa79/0x10c0 drivers/media/v4l2-core/v4l2-ioctl.c:3384
v4l2_ioctl+0x181/0x1d0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4eb128c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4eb204d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4eb13abf80 RCX: 00007f4eb128c0f9
RDX: 0000000020000180 RSI: 00000000c058560f RDI: 0000000000000003
RBP: 00007f4eb12e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc474e4f9f R14: 00007f4eb204d300 R15: 0000000000022000
</TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this issue. See:
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[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: d9b4a0c83a2d Linux 5.15.98
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11f765bcc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=2f8d9515b973b23b
dashboard link: https://syzkaller.appspot.com/bug?extid=9b9c572a79ddb0c1dd7a

compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:

disk image: https://storage.googleapis.com/syzbot-assets/037cabbd3313/disk-d9b4a0c8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9967e551eb34/vmlinux-d9b4a0c8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a050c7a4fd99/bzImage-d9b4a0c8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+9b9c57...@syzkaller.appspotmail.com

------------[ cut here ]------------

get_vaddr_frames() cannot follow VM_IO mapping

WARNING: CPU: 0 PID: 10040 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Modules linked in:
CPU: 1 PID: 10040 Comm: syz-executor.1 Not tainted 5.15.98-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59

Code: 8c 1a ff ff ff 4c 89 e7 e8 e2 bc 03 fb e9 0d ff ff ff e8 08 89 ba fa c6 05 ad 77 0a 07 01 48 c7 c7 e0 21 40 8b e8 b5 36 86 fa <0f> 0b e9 4a ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 1e ff
RSP: 0018:ffffc9000435f5a8 EFLAGS: 00010246
RAX: 4069f4acd5015900 RBX: 1ffff9200216f400 RCX: 0000000000040000
RDX: ffffc90003271000 RSI: 0000000000019c4b RDI: 0000000000019c4c
RBP: 00000000000ff000 R08: ffffffff81668cfc R09: ffffed1017344f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90010b7a004

R13: dffffc0000000000 R14: 0000000000000000 R15: 00000000fffffff2

FS: 00007fbc19412700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 000000c007ae8000 CR3: 0000000045356000 CR4: 00000000003506e0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vb2_create_framevec+0x4a/0xb0 drivers/media/common/videobuf2/videobuf2-memops.c:50
vb2_vmalloc_get_userptr+0xe7/0x400 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88

__prepare_userptr drivers/media/common/videobuf2/videobuf2-core.c:1164 [inline]
__buf_prepare+0xc22/0x4490 drivers/media/common/videobuf2/videobuf2-core.c:1406
vb2_core_prepare_buf+0xe2/0x300 drivers/media/common/videobuf2/videobuf2-core.c:1535
v4l2_m2m_prepare_buf drivers/media/v4l2-core/v4l2-mem2mem.c:822 [inline]
v4l2_m2m_ioctl_prepare_buf+0x137/0x3a0 drivers/media/v4l2-core/v4l2-mem2mem.c:1390
__video_do_ioctl+0xa44/0xe40 drivers/media/v4l2-core/v4l2-ioctl.c:2976
video_usercopy+0xa87/0x1120 drivers/media/v4l2-core/v4l2-ioctl.c:3324

v4l2_ioctl+0x181/0x1d0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:51 [inline]

__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860

do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80

entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbc1aea00f9

Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48

RSP: 002b:00007fbc19412168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbc1afbff80 RCX: 00007fbc1aea00f9
RDX: 0000000020000300 RSI: 00000000c058565d RDI: 0000000000000003
RBP: 00007fbc1aefbae9 R08: 0000000000000000 R09: 0000000000000000

R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000

R13: 00007ffdc03de7df R14: 00007fbc19412300 R15: 0000000000022000

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 42616e0f09fb Linux 6.1.15
git tree: linux-6.1.y

console output: https://syzkaller.appspot.com/x/log.txt?x=117b36dac80000

kernel config: https://syzkaller.appspot.com/x/.config?x=690b9ff41783cd73
dashboard link: https://syzkaller.appspot.com/bug?extid=2f9f34d8ac9500d5fa13
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10975e6cc80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1367515cc80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/db869f2ed2bd/disk-42616e0f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/37951bbe5829/vmlinux-42616e0f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/23aa1a75ce0f/bzImage-42616e0f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2f9f34...@syzkaller.appspotmail.com

------------[ cut here ]------------

get_vaddr_frames() cannot follow VM_IO mapping

WARNING: CPU: 1 PID: 3628 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Modules linked in:
CPU: 1 PID: 3628 Comm: syz-executor225 Not tainted 6.1.15-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Code: 8c 1a ff ff ff 4c 89 e7 e8 82 85 d2 fa e9 0d ff ff ff e8 48 7a 7c fa c6 05 10 e1 30 07 01 48 c7 c7 80 8f a7 8b e8 65 dc 44 fa <0f> 0b e9 4a ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 1e ff

RSP: 0018:ffffc90003cef4a8 EFLAGS: 00010246
RAX: fd49814bb625fc00 RBX: 1ffff920016c0000 RCX: ffff888021b20000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000080000 R08: ffffffff816dec4c R09: ffffed1017364f1c
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000b600004

R13: dffffc0000000000 R14: 0000000000000000 R15: 00000000fffffff2

FS: 0000555555cdd300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000020000140 CR3: 000000007a82f000 CR4: 00000000003506e0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vb2_create_framevec+0x4a/0xb0 drivers/media/common/videobuf2/videobuf2-memops.c:50
vb2_vmalloc_get_userptr+0xe7/0x400 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88
__prepare_userptr drivers/media/common/videobuf2/videobuf2-core.c:1194 [inline]
__buf_prepare+0xc22/0x4460 drivers/media/common/videobuf2/videobuf2-core.c:1436
vb2_core_qbuf+0x2b4/0x1360 drivers/media/common/videobuf2/videobuf2-core.c:1738
vb2_qbuf+0x184/0x240 drivers/media/common/videobuf2/videobuf2-v4l2.c:816
v4l2_m2m_qbuf+0x1e0/0x7a0 drivers/media/v4l2-core/v4l2-mem2mem.c:773
__video_do_ioctl+0xa3a/0xe30 drivers/media/v4l2-core/v4l2-ioctl.c:3037
video_usercopy+0xa79/0x10c0 drivers/media/v4l2-core/v4l2-ioctl.c:3384
v4l2_ioctl+0x181/0x1d0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd

RIP: 0033:0x7f8b2a81f119
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:00007ffd027d2b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8b2a81f119

RDX: 0000000020000180 RSI: 00000000c058560f RDI: 0000000000000003

RBP: 00007f8b2a7e3100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8b2a7e3190
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: d9b4a0c83a2d Linux 5.15.98
git tree: linux-5.15.y

console output: https://syzkaller.appspot.com/x/log.txt?x=11160c4cc80000

kernel config: https://syzkaller.appspot.com/x/.config?x=2f8d9515b973b23b
dashboard link: https://syzkaller.appspot.com/bug?extid=9b9c572a79ddb0c1dd7a
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=111b4f32c80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=156d8a0cc80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/037cabbd3313/disk-d9b4a0c8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9967e551eb34/vmlinux-d9b4a0c8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a050c7a4fd99/bzImage-d9b4a0c8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9b9c57...@syzkaller.appspotmail.com

------------[ cut here ]------------
get_vaddr_frames() cannot follow VM_IO mapping

WARNING: CPU: 0 PID: 3583 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Modules linked in:
CPU: 0 PID: 3583 Comm: syz-executor174 Not tainted 5.15.98-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:get_vaddr_frames+0x1db/0x220 drivers/media/common/videobuf2/frame_vector.c:59
Code: 8c 1a ff ff ff 4c 89 e7 e8 e2 bc 03 fb e9 0d ff ff ff e8 08 89 ba fa c6 05 ad 77 0a 07 01 48 c7 c7 e0 21 40 8b e8 b5 36 86 fa <0f> 0b e9 4a ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 1e ff

RSP: 0018:ffffc9000208f5a8 EFLAGS: 00010246
RAX: 5257df3f7d421d00 RBX: 1ffff92000656200 RCX: ffff88801f860000

RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000

RBP: 00000000000ff000 R08: ffffffff81668cfc R09: ffffed1017344f24

R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900032b1004

R13: dffffc0000000000 R14: 0000000000000000 R15: 00000000fffffff2

FS: 0000555556333300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 00005642f3d32d20 CR3: 0000000079218000 CR4: 00000000003506f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vb2_create_framevec+0x4a/0xb0 drivers/media/common/videobuf2/videobuf2-memops.c:50
vb2_vmalloc_get_userptr+0xe7/0x400 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88
__prepare_userptr drivers/media/common/videobuf2/videobuf2-core.c:1164 [inline]
__buf_prepare+0xc22/0x4490 drivers/media/common/videobuf2/videobuf2-core.c:1406
vb2_core_prepare_buf+0xe2/0x300 drivers/media/common/videobuf2/videobuf2-core.c:1535
v4l2_m2m_prepare_buf drivers/media/v4l2-core/v4l2-mem2mem.c:822 [inline]
v4l2_m2m_ioctl_prepare_buf+0x137/0x3a0 drivers/media/v4l2-core/v4l2-mem2mem.c:1390
__video_do_ioctl+0xa44/0xe40 drivers/media/v4l2-core/v4l2-ioctl.c:2976
video_usercopy+0xa87/0x1120 drivers/media/v4l2-core/v4l2-ioctl.c:3324
v4l2_ioctl+0x181/0x1d0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb

RIP: 0033:0x7f02f6f58119
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:00007ffe5e176298 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f02f6f58119

RDX: 0000000020000300 RSI: 00000000c058565d RDI: 0000000000000003

RBP: 00007f02f6f1c100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f02f6f1c190

[syzbot]

syzbot suspects this issue could be fixed by backporting the following commit:

commit 735de5caf79e06cc9fb96b1b4f4974674ae3e917
git tree: upstream
Author: Hans Verkuil <hverkui...@xs4all.nl>
Date: Thu Aug 17 10:41:32 2023 +0000

media: vb2: frame_vector.c: replace WARN_ONCE with a comment

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=131ff42d680000
kernel config: https://syzkaller.appspot.com/x/.config?x=28c36fe4d02f8c88
dashboard link: https://syzkaller.appspot.com/bug?extid=2f9f34d8ac9500d5fa13
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101069bec80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f71daac80000


Please keep in mind that other backports might be required as well.

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

[syzbot]

Auto-closing this bug as obsolete.
No recent activity, existing reproducers are no longer triggering the issue.