Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 32771 Comm: syz-executor.7 Not tainted 6.16.0-rc3-next-20250627 #1 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:guard_bio_eod+0x52/0x630
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 fb 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ce 04 00 00 48 8b 5b 08 31 ff 48 89 de e8 a6 d2
RSP: 0000:ffff88801815f688 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90008acf000
RDX: 0000000000000001 RSI: ffffffff8235c0da RDI: 0000000000000008
RBP: ffff88800efcab00 R08: 0000000000000001 R09: ffffed1001df956c
R10: 0000000000000000 R11: 0000000000000001 R12: fff8880091513b00
R13: ffff88801815f830 R14: 0000000000000000 R15: ffff88800efcab00
FS: 00007f1f99d69700(0000) GS:ffff8880e55f5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ffb10c CR3: 000000001c802000 CR4: 0000000000350ef0
Call Trace:
do_mpage_readpage+0xc73/0x16c0
mpage_readahead+0x340/0x590
read_pages+0x196/0xb10
page_cache_ra_unbounded+0x391/0x6a0
page_cache_ra_order+0x236/0x2f0
filemap_fault+0x17ed/0x2c50
__do_fault+0x10d/0x480
__handle_mm_fault+0x119c/0x30f0
handle_mm_fault+0x2c3/0x900
do_user_addr_fault+0x4fa/0xeb0
exc_page_fault+0xb0/0x180
asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f1f9c792a93
Code: 00 00 00 00 00 66 90 48 89 7c 24 f0 48 89 74 24 e8 48 89 54 24 e0 48 89 4c 24 d8 48 8b 4c 24 f0 48 8b 74 24 e8 4c 8b 44 24 e0 <8b> 81 0c 01 00 00 44 8b 89 08 01 00 00 48 8b 54 24 d8 c1 e0 04 8d
RSP: 002b:00007f1f99d69178 EFLAGS: 00010212
RAX: 00007f1f9c792a70 RBX: 00007f1f9c906f60 RCX: 0000000020ffb000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020ffb000
RBP: 00007f1f9c84df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000311720 R12: 0000000000000000
R13: 00007fff3d7dc0ff R14: 00007f1f99d69300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:guard_bio_eod+0x52/0x630
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 fb 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 08 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ce 04 00 00 48 8b 5b 08 31 ff 48 89 de e8 a6 d2
RSP: 0000:ffff88801815f688 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90008acf000
RDX: 0000000000000001 RSI: ffffffff8235c0da RDI: 0000000000000008
RBP: ffff88800efcab00 R08: 0000000000000001 R09: ffffed1001df956c
R10: 0000000000000000 R11: 0000000000000001 R12: fff8880091513b00
R13: ffff88801815f830 R14: 0000000000000000 R15: ffff88800efcab00
FS: 00007f1f99d69700(0000) GS:ffff8880e55f5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ffb10c CR3: 000000001c802000 CR4: 0000000000350ef0
------------[ cut here ]------------
WARNING: kernel/exit.c:897 at do_exit+0x1c3b/0x2970, CPU#0: syz-executor.7/32771
Modules linked in:
CPU: 0 UID: 0 PID: 32771 Comm: syz-executor.7 Tainted: G D 6.16.0-rc3-next-20250627 #1 PREEMPT(voluntary)
Tainted: [D]=DIE
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:do_exit+0x1c3b/0x2970
Code: 37 0a 00 00 c7 43 18 00 00 00 00 e9 1c e6 ff ff e8 2a a8 38 00 bf 02 24 00 00 e8 d0 50 0b 00 e9 41 ff ff ff e8 16 a8 38 00 90 <0f> 0b 90 e9 82 e4 ff ff e8 08 a8 38 00 4c 89 e6 bf 05 06 00 00 e8
RSP: 0000:ffff88801815fe40 EFLAGS: 00010202
RAX: 000000000002e8f0 RBX: 0000000000000200 RCX: ffffc90008acf000
RDX: 0000000000040000 RSI: ffffffff813af05a RDI: ffff888040376468
RBP: ffff888040375280 R08: 0000000000000001 R09: fffffbfff0f0ecd0
R10: 0000000000000200 R11: 0000000000000001 R12: 000000000000000b
R13: 0000000000002710 R14: dffffc0000000001 R15: 0000000000000000
FS: 00007f1f99d69700(0000) GS:ffff8880e55f5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ffb10c CR3: 000000001c802000 CR4: 0000000000350ef0
Call Trace:
make_task_dead+0x174/0x3b0
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f1f9c792a93
Code: 00 00 00 00 00 66 90 48 89 7c 24 f0 48 89 74 24 e8 48 89 54 24 e0 48 89 4c 24 d8 48 8b 4c 24 f0 48 8b 74 24 e8 4c 8b 44 24 e0 <8b> 81 0c 01 00 00 44 8b 89 08 01 00 00 48 8b 54 24 d8 c1 e0 04 8d
RSP: 002b:00007f1f99d69178 EFLAGS: 00010212
RAX: 00007f1f9c792a70 RBX: 00007f1f9c906f60 RCX: 0000000020ffb000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020ffb000
RBP: 00007f1f9c84df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000311720 R12: 0000000000000000
R13: 00007fff3d7dc0ff R14: 00007f1f99d69300 R15: 0000000000022000
irq event stamp: 1157
hardirqs last enabled at (1157): [] cond_local_irq_enable.isra.0+0x2e/0x40
hardirqs last disabled at (1156): [] exc_general_protection+0x32/0x330
softirqs last enabled at (1038): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (825): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 48 89 fa mov %rdi,%rdx
3: 48 c1 ea 03 shr $0x3,%rdx
7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
b: 0f 85 fb 04 00 00 jne 0x50c
11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
18: fc ff df
1b: 49 8b 5f 08 mov 0x8(%r15),%rbx
1f: 48 8d 7b 08 lea 0x8(%rbx),%rdi
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 ce 04 00 00 jne 0x502
34: 48 8b 5b 08 mov 0x8(%rbx),%rbx
38: 31 ff xor %edi,%edi
3a: 48 89 de mov %rbx,%rsi
3d: e8 .byte 0xe8
3e: a6 cmpsb %es:(%rdi),%ds:(%rsi)
3f: d2 .byte 0xd2