BUG: unable to handle page fault for address: ffffed10483801ff #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23fff2067 P4D 23fff2067 PUD 23fff0067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 397 Comm: syz-executor.1 Not tainted 6.1.22-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:fuse_dev_do_write+0x34db/0x5490 fs/fuse/dev.c:1938 Code: fc ff df 48 8b 3b 48 89 f0 48 c1 e8 03 0f b6 04 10 84 c0 49 89 fe 0f 85 ac 1b 00 00 8b 1e ff cb 48 01 fb 48 89 d8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 c2 1b 00 00 c6 03 00 48 8b 44 24 18 80 3c RSP: 0018:ffffc900a1227860 EFLAGS: 00010a07 RAX: 1ffff110483801ff RBX: ffff888241c00fff RCX: ffffffff81ecb35e RDX: dffffc0000000000 RSI: ffffc900c12d79e8 RDI: ffff888141c01000 RBP: ffffc900a1227b90 R08: dffffc0000000000 R09: fffff9400092191f R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888129dcabf0 R13: ffff888129dcac00 R14: ffff888141c01000 R15: ffff888129dcabd0 FS: 00007fab4465a700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed10483801ff CR3: 0000000133f9c000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fuse_dev_write+0x128/0x1a0 fs/fuse/dev.c:1988 call_write_iter include/linux/fs.h:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x986/0xcb0 fs/read_write.c:584 ksys_write+0x15c/0x240 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x76/0x80 fs/read_write.c:646 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: 0033:0x7fab4388c169 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:00007fab4465a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fab439ac050 RCX: 00007fab4388c169 RDX: 0000000000000010 RSI: 00000000200042c0 RDI: 0000000000000003 RBP: 00007fab438e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff580b934f R14: 00007fab4465a300 R15: 0000000000022000 Modules linked in: CR2: ffffed10483801ff ---[ end trace 0000000000000000 ]--- RIP: 0010:fuse_dev_do_write+0x34db/0x5490 fs/fuse/dev.c:1938 Code: fc ff df 48 8b 3b 48 89 f0 48 c1 e8 03 0f b6 04 10 84 c0 49 89 fe 0f 85 ac 1b 00 00 8b 1e ff cb 48 01 fb 48 89 d8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 c2 1b 00 00 c6 03 00 48 8b 44 24 18 80 3c RSP: 0018:ffffc900a1227860 EFLAGS: 00010a07 RAX: 1ffff110483801ff RBX: ffff888241c00fff RCX: ffffffff81ecb35e RDX: dffffc0000000000 RSI: ffffc900c12d79e8 RDI: ffff888141c01000 RBP: ffffc900a1227b90 R08: dffffc0000000000 R09: fffff9400092191f R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888129dcabf0 R13: ffff888129dcac00 R14: ffff888141c01000 R15: ffff888129dcabd0 FS: 00007fab4465a700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed10483801ff CR3: 0000000133f9c000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: df 48 8b fisttps -0x75(%rax) 3: 3b 48 89 cmp -0x77(%rax),%ecx 6: f0 48 c1 e8 03 lock shr $0x3,%rax b: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax f: 84 c0 test %al,%al 11: 49 89 fe mov %rdi,%r14 14: 0f 85 ac 1b 00 00 jne 0x1bc6 1a: 8b 1e mov (%rsi),%ebx 1c: ff cb dec %ebx 1e: 48 01 fb add %rdi,%rbx 21: 48 89 d8 mov %rbx,%rax 24: 48 c1 e8 03 shr $0x3,%rax * 28: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax <-- trapping instruction 2c: 84 c0 test %al,%al 2e: 0f 85 c2 1b 00 00 jne 0x1bf6 34: c6 03 00 movb $0x0,(%rbx) 37: 48 8b 44 24 18 mov 0x18(%rsp),%rax 3c: 80 .byte 0x80 3d: 3c .byte 0x3c