general protection fault, probably for non-canonical address 0xdffffc000000001d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000e8-0x00000000000000ef] CPU: 1 PID: 25200 Comm: syz-executor.1 Not tainted 6.6.0-syzkaller-12401-g8f6f76a6a29f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__lock_acquire+0x10d/0x7f70 kernel/locking/lockdep.c:5004 Code: 85 75 18 00 00 83 3d bd ba 92 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d 8c 22 12 0c 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 c4 61 7d 00 48 8b 94 24 80 00 00 RSP: 0018:ffffc9001799eea0 EFLAGS: 00010006 RAX: 000000000000001d RBX: 1ffff92002f33df8 RCX: 0000000000000001 RDX: 00000000000000e8 RSI: 0000000000000000 RDI: 00000000000000e8 RBP: ffffc9001799f168 R08: dffffc0000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e0017e R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: ffff8880368c8000 FS: 00007fcbcabfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555733da8 CR3: 00000000432fb000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 hugetlb_follow_page_mask+0x2b9/0x1370 mm/hugetlb.c:6791 follow_page_mask+0x27d/0xe20 mm/gup.c:824 __get_user_pages+0x643/0x15f0 mm/gup.c:1237 __get_user_pages_locked mm/gup.c:1507 [inline] __gup_longterm_locked+0x2052/0x2bc0 mm/gup.c:2209 pin_user_pages_remote+0x199/0x260 mm/gup.c:3356 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline] process_vm_rw_core mm/process_vm_access.c:215 [inline] process_vm_rw+0x713/0xcf0 mm/process_vm_access.c:283 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline] __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline] __x64_sys_process_vm_writev+0xe0/0xf0 mm/process_vm_access.c:298 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fcbcc07cae9 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:00007fcbcabfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 RAX: ffffffffffffffda RBX: 00007fcbcc19bf80 RCX: 00007fcbcc07cae9 RDX: 0000000000000001 RSI: 0000000020000b80 RDI: 00000000000006d0 RBP: 00007fcbcc0c847a R08: 0000000000000001 R09: 0000000000000000 R10: 0000000020000f80 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fcbcc19bf80 R15: 00007ffda9dd2238 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x10d/0x7f70 kernel/locking/lockdep.c:5004 Code: 85 75 18 00 00 83 3d bd ba 92 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d 8c 22 12 0c 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 c4 61 7d 00 48 8b 94 24 80 00 00 RSP: 0018:ffffc9001799eea0 EFLAGS: 00010006 RAX: 000000000000001d RBX: 1ffff92002f33df8 RCX: 0000000000000001 RDX: 00000000000000e8 RSI: 0000000000000000 RDI: 00000000000000e8 RBP: ffffc9001799f168 R08: dffffc0000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e0017e R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: ffff8880368c8000 FS: 00007fcbcabfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555733da8 CR3: 00000000432fb000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 85 75 18 test %esi,0x18(%rbp) 3: 00 00 add %al,(%rax) 5: 83 3d bd ba 92 0d 00 cmpl $0x0,0xd92babd(%rip) # 0xd92bac9 c: 48 89 9c 24 10 01 00 mov %rbx,0x110(%rsp) 13: 00 14: 0f 84 f8 0f 00 00 je 0x1012 1a: 83 3d 8c 22 12 0c 00 cmpl $0x0,0xc12228c(%rip) # 0xc1222ad 21: 74 34 je 0x57 23: 48 89 d0 mov %rdx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 00 00 cmpb $0x0,(%rax,%r8,1) <-- trapping instruction 2f: 74 1a je 0x4b 31: 48 89 d7 mov %rdx,%rdi 34: e8 c4 61 7d 00 call 0x7d61fd 39: 48 rex.W 3a: 8b .byte 0x8b 3b: 94 xchg %eax,%esp 3c: 24 80 and $0x80,%al