Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 9766 Comm: syz.3.848 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:_compound_head include/linux/page-flags.h:284 [inline]
RIP: 0010:__bio_iov_iter_get_pages block/bio.c:1258 [inline]
RIP: 0010:bio_iov_iter_get_pages+0x5b2/0x11c0 block/bio.c:1336
Code: 9c 24 20 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 0c c9 7c fd 48 8b 1b 4c 8d 73 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 ef c8 7c fd 4d 8b 3e 4c 89 fe 48
RSP: 0018:ffffc9000bd7f3e0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90014f68000 RSI: 0000000000008faa RDI: 0000000000008fab
RBP: ffffc9000bd7f590 R08: 0000000000000000 R09: ffffffff84a7d3b5
R10: dffffc0000000000 R11: fffff94000363ae9 R12: dffffc0000000000
R13: ffff88806644c294 R14: 0000000000000008 R15: 00000000000000fe
FS: 00007ffb5cdf66c0(0000) GS:ffff888125af9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffb5f902000 CR3: 00000000767ea000 CR4: 00000000003526f0
Call Trace:
<TASK>
__blkdev_direct_IO+0x60b/0xee0 block/fops.c:215
blkdev_direct_IO+0x120f/0x1730 block/fops.c:434
blkdev_direct_write+0x7c/0x140 block/fops.c:719
blkdev_write_iter+0x547/0x710 block/fops.c:787
aio_write+0x535/0x7a0 fs/aio.c:1634
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x78b/0x1310 fs/aio.c:2053
__do_sys_io_submit fs/aio.c:2112 [inline]
__se_sys_io_submit+0x185/0x2f0 fs/aio.c:2082
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffb5eb8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffb5cdf6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007ffb5edc6180 RCX: 00007ffb5eb8ebe9
RDX: 00002000000000c0 RSI: 00000000000000f3 RDI: 00007ffb5f902000
RBP: 00007ffb5ec11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffb5edc6218 R14: 00007ffb5edc6180 R15: 00007ffe52bed138
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_compound_head include/linux/page-flags.h:284 [inline]
RIP: 0010:__bio_iov_iter_get_pages block/bio.c:1258 [inline]
RIP: 0010:bio_iov_iter_get_pages+0x5b2/0x11c0 block/bio.c:1336
Code: 9c 24 20 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 0c c9 7c fd 48 8b 1b 4c 8d 73 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 ef c8 7c fd 4d 8b 3e 4c 89 fe 48
RSP: 0018:ffffc9000bd7f3e0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90014f68000 RSI: 0000000000008faa RDI: 0000000000008fab
RBP: ffffc9000bd7f590 R08: 0000000000000000 R09: ffffffff84a7d3b5
R10: dffffc0000000000 R11: fffff94000363ae9 R12: dffffc0000000000
R13: ffff88806644c294 R14: 0000000000000008 R15: 00000000000000fe
FS: 00007ffb5cdf66c0(0000) GS:ffff8881259f9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd26203b78 CR3: 00000000767ea000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 9c pushf
1: 24 20 and $0x20,%al
3: 01 00 add %eax,(%rax)
5: 00 48 89 add %cl,-0x77(%rax)
8: d8 48 c1 fmuls -0x3f(%rax)
b: e8 03 42 80 3c call 0x3c804213
10: 20 00 and %al,(%rax)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 0c c9 7c fd call 0xfd7cc928
1c: 48 8b 1b mov (%rbx),%rbx
1f: 4c 8d 73 08 lea 0x8(%rbx),%r14
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 ef c8 7c fd call 0xfd7cc928
39: 4d 8b 3e mov (%r14),%r15
3c: 4c 89 fe mov %r15,%rsi
3f: 48 rex.W