assert failed: (origoffset & (PAGE_SIZE - 1)) == 0 && origoffset >= 0

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: a5a5ed5a correct debug message, d->myport has network byte..
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12caa153200000
dashboard link: https://syzkaller.appspot.com/bug?extid=a6d25ff9dbe4def802e9

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

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+a6d25f...@syzkaller.appspotmail.com

[ 380.4023443] panic: kernel diagnostic assertion "(origoffset & (PAGE_SIZE
- 1)) == 0 && origoffset >= 0" failed:
file "/syzkaller/managers/netbsd/kernel/sys/miscfs/genfs/genfs_io.c", line
183
[ 380.4291939] cpu0: Begin traceback...
[ 380.4329887] vpanic() at netbsd:vpanic+0x214
[ 380.4432892] _GLOBAL__sub_D_65535_0_cpu_configure() at
netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[ 380.4632325] genfs_getpages() at netbsd:genfs_getpages+0x8b3
[ 380.4733802] VOP_GETPAGES() at netbsd:VOP_GETPAGES+0x1a2
[ 380.4835268] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2151
[ 380.4936793] trap() at netbsd:trap+0x974
[ 380.4936793] --- trap (number 6) ---
[ 380.5054860] copyout() at netbsd:copyout+0x33
[ 380.5143744] sys___syscall() at netbsd:sys___syscall+0xe2
[ 380.5260871] syscall() at netbsd:syscall+0x32e
[ 380.5347864] --- syscall (number 198) ---
[ 380.5444140] 71ec6b43f4aa:
[ 380.5444140] cpu0: End traceback...

[ 380.5444140] dumping to dev 4,1 (offset=0, size=0): not possible
[ 380.5444140] rebooting...
SeaBIOS (version 1.8.2-20190122_225043-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2 Max CPUs supported: 2
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0
removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f29c0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from
>> NetBSD 8.0)
>> Memory: 639/3144640 k

1. Boot normally
2. Boot single user
3. Disable ACPI
4. Disable ACPI and SMP
5. Drop to boot prompt


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.