==================================================================
BUG: KASAN: vmalloc-out-of-bounds in elf_validity_check kernel/module.c:3073 [inline]
BUG: KASAN: vmalloc-out-of-bounds in load_module+0x4dee/0x5950 kernel/module.c:4008
Read of size 1 at addr ffffc9000010cfff by task syz.0.15/461

CPU: 1 PID: 461 Comm: syz.0.15 Not tainted 5.10.238-syzkaller-1007479-gd76d4cd0623a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
 elf_validity_check kernel/module.c:3073 [inline]
 load_module+0x4dee/0x5950 kernel/module.c:4008
 __do_sys_init_module kernel/module.c:4226 [inline]
 __se_sys_init_module+0x179/0x200 kernel/module.c:4209
 __x64_sys_init_module+0x76/0x80 kernel/module.c:4209
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7faebbf5cf39
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:00007faebb9de038 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
RAX: ffffffffffffffda RBX: 00007faebc114f80 RCX: 00007faebbf5cf39
RDX: 0000000000000000 RSI: 0000000000000578 RDI: 0000000020000040
RBP: 00007faebbfcf216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007faebc114f80 R15: 00007ffdd425f008


Memory state around the buggy address:
 ffffc9000010ce80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000010cf00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ffffc9000010cf80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                                                                ^
 ffffc9000010d000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000010d080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
BUG: unable to handle page fault for address: ffffc9000010cfff
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 100000067 P4D 100000067 PUD 100132067 PMD 100133067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 461 Comm: syz.0.15 Tainted: G    B             5.10.238-syzkaller-1007479-gd76d4cd0623a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:elf_validity_check kernel/module.c:3073 [inline]
RIP: 0010:load_module+0x3d4/0x5950 kernel/module.c:4008
Code: 48 ba 00 00 00 00 00 fc ff df 48 8b 03 48 89 44 24 50 49 8d 5c 07 ff 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 05 4a 00 00 <80> 3b 00 0f 85 18 14 00 00 49 8d 5c 24 04 48 89 d8 48 c1 e8 03 0f
RSP: 0018:ffffc90000d17b80 EFLAGS: 00010282
RAX: ffff8881164b6201 RBX: ffffc9000010cfff RCX: 0000000000000282
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 00000000ffffffff
RBP: ffffc90000d17d70 R08: 0000000000000004 R09: 0000000000000003
R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: ffffc9000010d3c2
R13: 1ffff92000021a8c R14: ffffc9000010d000 R15: ffffc9000010d000
FS:  00007faebb9de6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000010cfff CR3: 0000000116bee000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_init_module kernel/module.c:4226 [inline]
 __se_sys_init_module+0x179/0x200 kernel/module.c:4209
 __x64_sys_init_module+0x76/0x80 kernel/module.c:4209
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7faebbf5cf39
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:00007faebb9de038 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
RAX: ffffffffffffffda RBX: 00007faebc114f80 RCX: 00007faebbf5cf39
RDX: 0000000000000000 RSI: 0000000000000578 RDI: 0000000020000040
RBP: 00007faebbfcf216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007faebc114f80 R15: 00007ffdd425f008
Modules linked in:
CR2: ffffc9000010cfff
---[ end trace af3e034cd5890a25 ]---
RIP: 0010:elf_validity_check kernel/module.c:3073 [inline]
RIP: 0010:load_module+0x3d4/0x5950 kernel/module.c:4008
Code: 48 ba 00 00 00 00 00 fc ff df 48 8b 03 48 89 44 24 50 49 8d 5c 07 ff 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 05 4a 00 00 <80> 3b 00 0f 85 18 14 00 00 49 8d 5c 24 04 48 89 d8 48 c1 e8 03 0f
RSP: 0018:ffffc90000d17b80 EFLAGS: 00010282
RAX: ffff8881164b6201 RBX: ffffc9000010cfff RCX: 0000000000000282
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 00000000ffffffff
RBP: ffffc90000d17d70 R08: 0000000000000004 R09: 0000000000000003
R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: ffffc9000010d3c2
R13: 1ffff92000021a8c R14: ffffc9000010d000 R15: ffffc9000010d000
FS:  00007faebb9de6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000010cfff CR3: 0000000116bee000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
   7:	fc ff df
   a:	48 8b 03             	mov    (%rbx),%rax
   d:	48 89 44 24 50       	mov    %rax,0x50(%rsp)
  12:	49 8d 5c 07 ff       	lea    -0x1(%r15,%rax,1),%rbx
  17:	48 89 d8             	mov    %rbx,%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax
  22:	84 c0                	test   %al,%al
  24:	0f 85 05 4a 00 00    	jne    0x4a2f
* 2a:	80 3b 00             	cmpb   $0x0,(%rbx) <-- trapping instruction
  2d:	0f 85 18 14 00 00    	jne    0x144b
  33:	49 8d 5c 24 04       	lea    0x4(%r12),%rbx
  38:	48 89 d8             	mov    %rbx,%rax
  3b:	48 c1 e8 03          	shr    $0x3,%rax
  3f:	0f                   	.byte 0xf