ioremap: invalid physical address 8000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5935 at arch/x86/mm/ioremap.c:206 __ioremap_caller+0x4fb/0x620 arch/x86/mm/ioremap.c:204
Modules linked in:
CPU: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__ioremap_caller+0x4fb/0x620 arch/x86/mm/ioremap.c:206
Code: 85 02 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f6 d5 4a 00 48 8b 74 24 60 48 c7 c7 00 78 c8 8a e8 b5 c8 4a 09 <0f> 0b eb 8e 4c 8b 74 24 28 41 81 e6 ff 0f 00 00 4d 01 e6 48 8b 7c
RSP: 0018:ffffc9000304f8e0 EFLAGS: 00010246
RAX: 0000000000000032 RBX: 1ffff92000609f00 RCX: 9a40dd1e483abc00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000304f9f0 R08: ffffc9000304f5e7 R09: 1ffff92000609ebc
R10: dffffc0000000000 R11: fffff52000609ebd R12: 0000000000020000
R13: 000000000000002e R14: 8000000000000fff R15: dffffc0000000000
FS:  00005555652b9500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f85904700d0 CR3: 0000000078e99000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 phram_map drivers/mtd/devices/phram.c:91 [inline]
 register_device+0x129/0x570 drivers/mtd/devices/phram.c:138
 phram_setup+0x3fa/0x600 drivers/mtd/devices/phram.c:323
 param_attr_store+0x20e/0x300 kernel/params.c:586
 module_attr_store+0x5f/0x80 kernel/params.c:906
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f859059e1d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd0ca36928 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8590825fa0 RCX: 00007f859059e1d9
RDX: 000000000000001d RSI: 0000200000000140 RDI: 0000000000000003
RBP: 00007f8590635888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8590825fac R14: 00007f8590825fa0 R15: 00007f8590825fa0
 </TASK>