ioremap: invalid physical address 8000000000000000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4503 at arch/x86/mm/ioremap.c:200 __ioremap_caller+0x4f8/0x620 arch/x86/mm/ioremap.c:198 Modules linked in: CPU: 1 PID: 4503 Comm: syz.0.35 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__ioremap_caller+0x4f8/0x620 arch/x86/mm/ioremap.c:200 Code: 85 ff 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 89 69 43 00 48 8b 74 24 60 48 c7 c7 60 bc 28 8a e8 c8 b8 81 08 <0f> 0b eb 8d 4c 8b 74 24 28 41 81 e6 ff 0f 00 00 4d 01 ee 48 8b 7c RSP: 0018:ffffc9000317f900 EFLAGS: 00010246 RAX: 0000000000000032 RBX: 1ffff9200062ff00 RCX: 6abcfdcd31841900 RDX: ffffc900060d9000 RSI: 000000000000282b RDI: 000000000000282c RBP: ffffc9000317fa10 R08: ffff8880b8f33d7f R09: 1ffff110171e67af R10: dffffc0000000000 R11: ffffed10171e67b0 R12: 000000000000002e R13: 8000000000000000 R14: 0000000000020000 R15: dffffc0000000000 FS: 00007f0be287a6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c33cc3b CR3: 00000000235ec000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_device drivers/mtd/devices/phram.c:102 [inline] phram_setup+0x87c/0xdf0 drivers/mtd/devices/phram.c:281 param_attr_store+0x20a/0x300 kernel/params.c:585 module_attr_store+0x5b/0x80 kernel/params.c:905 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2179 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f0be46221d9 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:00007f0be287a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0be48a9fa0 RCX: 00007f0be46221d9 RDX: 000000000000001d RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007f0be46b9888 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0be48aa038 R14: 00007f0be48a9fa0 R15: 00007fff94608228 irq event stamp: 1567 hardirqs last enabled at (1643): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] hardirqs last enabled at (1643): [] finish_lock_switch+0x12d/0x290 kernel/sched/core.c:4803 hardirqs last disabled at (1654): [] __schedule+0x2fc/0x4350 kernel/sched/core.c:6291 softirqs last enabled at (1678): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last enabled at (1678): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last enabled at (1678): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 softirqs last disabled at (1665): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (1665): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last disabled at (1665): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 ---[ end trace d33ed9d990535308 ]--- phram: ioremap failed