Message-ID: <6714bb39.050a0220.10f4f4.002e.GAE@google.com>
Date: Sun, 20 Oct 2024 01:11:37 -0700
From: syzbot <syzbot+65d101735df4bb19d2a3@...kaller.appspotmail.com>
To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	miklos@...redi.hu, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [fuse?] kernel BUG in fuse_dev_do_write

Hello,

syzbot found the following issue on:

HEAD commit:    15e7d45e786a Add linux-next specific files for 20241016
git tree:       linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1597745f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c36416f1c54640c0
dashboard link: https://syzkaller.appspot.com/bug?extid=65d101735df4bb19d2a3
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1623e830580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16582f27980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cf2ad43c81cc/disk-15e7d45e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c85347a66a1c/vmlinux-15e7d45e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/648cf8e59c13/bzImage-15e7d45e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+65d101735df4bb19d2a3@...kaller.appspotmail.com

------------[ cut here ]------------
kernel BUG at include/linux/highmem.h:269!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5238 Comm: syz-executor755 Not tainted 6.12.0-rc3-next-20241016-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:zero_user_segments include/linux/highmem.h:269 [inline]
RIP: 0010:folio_zero_range include/linux/highmem.h:641 [inline]
RIP: 0010:fuse_notify_store fs/fuse/dev.c:1671 [inline]
RIP: 0010:fuse_notify fs/fuse/dev.c:1908 [inline]
RIP: 0010:fuse_dev_do_write+0x5d6d/0x5da0 fs/fuse/dev.c:1992
Code: c6 a0 11 41 8c e8 43 fc c9 fe 90 0f 0b e8 ab 55 7e fe 4c 89 ef 48 c7 c6 40 11 41 8c e8 2c fc c9 fe 90 0f 0b e8 94 55 7e fe 90 <0f> 0b e8 8c 55 7e fe eb 0c e8 85 55 7e fe eb c1 e8 7e 55 7e fe 4c
RSP: 0018:ffffc90003e67860 EFLAGS: 00010293
RAX: ffffffff83168cbc RBX: 0000000000001001 RCX: ffff88802178bc00
RDX: 0000000000000000 RSI: 0000000000001001 RDI: 0000000000001000
RBP: ffffc90003e67bb0 R08: ffffffff8316685c R09: 1ffffd40003defd8
R10: dffffc0000000000 R11: fffff940003defd9 R12: 0000000000001000
R13: ffffea0001ef7ec0 R14: 1ffffd40003defd8 R15: 0000000000000001
FS:  000055557fdec380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001f80 CR3: 000000007a4ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fuse_dev_write+0x148/0x1d0 fs/fuse/dev.c:2076
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xa6d/0xc90 fs/read_write.c:683
 ksys_write+0x183/0x2b0 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffaa74606e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff9501f418 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffaa74a9029 RCX: 00007ffaa74606e9
RDX: 000000000000002a RSI: 0000000020001f80 RDI: 0000000000000003
RBP: 00007ffaa74d3610 R08: 00007fff9501f5e8 R09: 00007fff9501f5e8
R10: 0000000020000200 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff9501f5d8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:zero_user_segments include/linux/highmem.h:269 [inline]
RIP: 0010:folio_zero_range include/linux/highmem.h:641 [inline]
RIP: 0010:fuse_notify_store fs/fuse/dev.c:1671 [inline]
RIP: 0010:fuse_notify fs/fuse/dev.c:1908 [inline]
RIP: 0010:fuse_dev_do_write+0x5d6d/0x5da0 fs/fuse/dev.c:1992
Code: c6 a0 11 41 8c e8 43 fc c9 fe 90 0f 0b e8 ab 55 7e fe 4c 89 ef 48 c7 c6 40 11 41 8c e8 2c fc c9 fe 90 0f 0b e8 94 55 7e fe 90 <0f> 0b e8 8c 55 7e fe eb 0c e8 85 55 7e fe eb c1 e8 7e 55 7e fe 4c
RSP: 0018:ffffc90003e67860 EFLAGS: 00010293
RAX: ffffffff83168cbc RBX: 0000000000001001 RCX: ffff88802178bc00
RDX: 0000000000000000 RSI: 0000000000001001 RDI: 0000000000001000
RBP: ffffc90003e67bb0 R08: ffffffff8316685c R09: 1ffffd40003defd8
R10: dffffc0000000000 R11: fffff940003defd9 R12: 0000000000001000
R13: ffffea0001ef7ec0 R14: 1ffffd40003defd8 R15: 0000000000000001
FS:  000055557fdec380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055874a56a790 CR3: 000000007a4ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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