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: 15300 Comm: syz-executor.5 Not tainted 6.16.0-rc4-next-20250703 #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 b6 b7
RSP: 0018:ffff888053f67258 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900029ee000
RDX: 0000000000000001 RSI: ffffffff8235a0aa RDI: 0000000000000008
RBP: ffff88804d87fc00 R08: 0000000000000001 R09: ffffed1009b0ff8c
R10: 0000000000000000 R11: 0000000000000001 R12: ffe220024544ec00
R13: ffff888053f67400 R14: 0000000000000000 R15: ffff88804d87fc00
FS: 00007f79ecd67700(0000) GS:ffff8880e55f2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73f1e40546 CR3: 0000000032877000 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_sync_ra+0x96e/0xaa0
filemap_get_pages+0x34d/0x18f0
filemap_splice_read+0x5c4/0xc80
do_splice_read+0x1f8/0x2a0
splice_direct_to_actor+0x2a8/0x9d0
do_splice_direct+0x179/0x250
do_sendfile+0xa8e/0xdc0
__x64_sys_sendfile64+0x14c/0x210
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f79ef7f1b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f79ecd67188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f79ef904f60 RCX: 00007f79ef7f1b19
RDX: 0000000020000080 RSI: 0000000000000006 RDI: 0000000000000006
RBP: 00007f79ef84bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe508b7f9f R14: 00007f79ecd67300 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 b6 b7
RSP: 0018:ffff888053f67258 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900029ee000
RDX: 0000000000000001 RSI: ffffffff8235a0aa RDI: 0000000000000008
RBP: ffff88804d87fc00 R08: 0000000000000001 R09: ffffed1009b0ff8c
R10: 0000000000000000 R11: 0000000000000001 R12: ffe220024544ec00
R13: ffff888053f67400 R14: 0000000000000000 R15: ffff88804d87fc00
FS: 00007f79ecd67700(0000) GS:ffff8880e55f2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73f1e40546 CR3: 0000000032877000 CR4: 0000000000350ef0
------------[ cut here ]------------
WARNING: kernel/exit.c:897 at do_exit+0x1c3b/0x2970, CPU#0: syz-executor.5/15300
Modules linked in:
CPU: 0 UID: 0 PID: 15300 Comm: syz-executor.5 Tainted: G D 6.16.0-rc4-next-20250703 #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 da 6d 38 00 bf 02 24 00 00 e8 d0 50 0b 00 e9 41 ff ff ff e8 c6 6d 38 00 90 <0f> 0b 90 e9 82 e4 ff ff e8 b8 6d 38 00 4c 89 e6 bf 05 06 00 00 e8
RSP: 0018:ffff888053f67e40 EFLAGS: 00010212
RAX: 000000000003ac6c RBX: 0000000000000200 RCX: ffffc900029ee000
RDX: 0000000000040000 RSI: ffffffff813aef8a RDI: ffff88804c4391e8
RBP: ffff88804c438000 R08: 0000000000000001 R09: fffffbfff0f0f2c8
R10: 0000000000000200 R11: ffffffffffff3060 R12: 000000000000000b
R13: 0000000000002710 R14: dffffc0000000001 R15: 0000000000000000
FS: 00007f79ecd67700(0000) GS:ffff8880e55f2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73f1e40546 CR3: 0000000032877000 CR4: 0000000000350ef0
Call Trace:
make_task_dead+0x174/0x3b0
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f79ef7f1b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f79ecd67188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f79ef904f60 RCX: 00007f79ef7f1b19
RDX: 0000000020000080 RSI: 0000000000000006 RDI: 0000000000000006
RBP: 00007f79ef84bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe508b7f9f R14: 00007f79ecd67300 R15: 0000000000022000
irq event stamp: 2239
hardirqs last enabled at (2239): [] cond_local_irq_enable.isra.0+0x2e/0x40
hardirqs last disabled at (2238): [] exc_general_protection+0x32/0x330
softirqs last enabled at (2132): [] fpu_clone+0x16e/0x740
softirqs last disabled at (2130): [] fpu_clone+0xfa/0x740
---[ end trace 0000000000000000 ]---
loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): couldn't mount as ext3 due to feature incompatibilities
loop0: detected capacity change from 0 to 16
EXT4-fs (loop0): couldn't mount as ext3 due to feature incompatibilities
loop0: detected capacity change from 0 to 18
EXT4-fs (loop0): couldn't mount as ext3 due to feature incompatibilities
kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
----------------
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: b6 b7 mov $0xb7,%dh