BUG: unable to handle page fault for address: ffffed104b0375ff
#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: 1 PID: 15064 Comm: syz-executor.2 Tainted: G W 5.10.186-syzkaller-01315-g59b65efafe20 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:fuse_dev_do_write+0x143d/0x30e0 fs/fuse/dev.c:1951
Code: e8 03 49 bf 00 00 00 00 00 fc ff df 42 0f b6 04 38 84 c0 0f 85 56 1a 00 00 45 8b 6d 00 41 ff cd 49 01 dd 4c 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 56 1a 00 00 41 c6 45 00 00 43 80 3c 3c
RSP: 0018:ffffc90000ea7820 EFLAGS: 00010a07
RAX: 1ffff1104b0375ff RBX: ffff8881581bb000 RCX: dffffc0000000000
RDX: ffffc90002ad9000 RSI: 0000000000000056 RDI: 0000000000000057
RBP: ffffc90000ea7b50 R08: ffffffff81fa4e51 R09: fffff9400098dfdf
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11021e38963
R13: ffff8882581bafff R14: 1ffff11021e38966 R15: dffffc0000000000
FS: 00007f1db97016c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed104b0375ff CR3: 0000000119627000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fuse_dev_write+0x147/0x1d0 fs/fuse/dev.c:2001
call_write_iter include/linux/fs.h:1976 [inline]
new_sync_write fs/read_write.c:518 [inline]
vfs_write+0xb55/0xe70 fs/read_write.c:605
ksys_write+0x199/0x2c0 fs/read_write.c:658
__do_sys_write fs/read_write.c:670 [inline]
__se_sys_write fs/read_write.c:667 [inline]
__x64_sys_write+0x7b/0x90 fs/read_write.c:667
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f1dba97eb29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1db97010c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1dbaa9df80 RCX: 00007f1dba97eb29
RDX: 0000000000000010 RSI: 00000000200042c0 RDI: 0000000000000003
RBP: 00007f1dba9ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1dbaa9df80 R15: 00007ffc318060a8
Modules linked in:
CR2: ffffed104b0375ff
---[ end trace ca1f0f816b3bcf6e ]---
RIP: 0010:fuse_dev_do_write+0x143d/0x30e0 fs/fuse/dev.c:1951
Code: e8 03 49 bf 00 00 00 00 00 fc ff df 42 0f b6 04 38 84 c0 0f 85 56 1a 00 00 45 8b 6d 00 41 ff cd 49 01 dd 4c 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 56 1a 00 00 41 c6 45 00 00 43 80 3c 3c
RSP: 0018:ffffc90000ea7820 EFLAGS: 00010a07
RAX: 1ffff1104b0375ff RBX: ffff8881581bb000 RCX: dffffc0000000000
RDX: ffffc90002ad9000 RSI: 0000000000000056 RDI: 0000000000000057
RBP: ffffc90000ea7b50 R08: ffffffff81fa4e51 R09: fffff9400098dfdf
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11021e38963
R13: ffff8882581bafff R14: 1ffff11021e38966 R15: dffffc0000000000
FS: 00007f1db97016c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed104b0375ff CR3: 0000000119627000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
7: fc ff df
a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax
f: 84 c0 test %al,%al
11: 0f 85 56 1a 00 00 jne 0x1a6d
17: 45 8b 6d 00 mov 0x0(%r13),%r13d
1b: 41 ff cd dec %r13d
1e: 49 01 dd add %rbx,%r13
21: 4c 89 e8 mov %r13,%rax
24: 48 c1 e8 03 shr $0x3,%rax
* 28: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2d: 84 c0 test %al,%al
2f: 0f 85 56 1a 00 00 jne 0x1a8b
35: 41 c6 45 00 00 movb $0x0,0x0(%r13)
3a: 43 rex.XB
3b: 80 .byte 0x80
3c: 3c 3c cmp $0x3c,%al