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: 17591 Comm: syz-executor.3 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:__lock_acquire+0xe49/0x3b20 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 c8 51 f6 0f 0f 82 c3 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 26 1f 00 00 49 81 7d 00 a0 29 b5 90 0f 84 8e f2 RSP: 0018:ffffc9001063ef58 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 000000000000001d RSI: ffff88801c981dc0 RDI: 00000000000000e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f193a97 R11: 0000000000000002 R12: 0000000000000000 R13: 00000000000000e8 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f48cfdfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5351175198 CR3: 000000002829e000 CR4: 0000000000350ef0 Call Trace: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 hugetlb_vma_lock_read mm/hugetlb.c:274 [inline] hugetlb_vma_lock_read+0x8d/0xd0 mm/hugetlb.c:265 hugetlb_follow_page_mask+0x15b/0x10c0 mm/hugetlb.c:6791 follow_page_mask+0x49e/0xda0 mm/gup.c:824 __get_user_pages+0x366/0x1490 mm/gup.c:1237 __get_user_pages_locked mm/gup.c:1507 [inline] get_dump_page+0xfc/0x220 mm/gup.c:2029 dump_user_range+0x45b/0x790 fs/coredump.c:913 elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077 do_coredump+0x2c97/0x3fd0 fs/coredump.c:764 get_signal+0x2438/0x2790 kernel/signal.c:2890 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204 irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 002b:0000000020000008 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f48d139bf80 RCX: 00007f48d127cae9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000200 RBP: 00007f48d12c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 000000000000000b R14: 00007f48d139bf80 R15: 00007ffc18d3ee88 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe49/0x3b20 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 c8 51 f6 0f 0f 82 c3 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 26 1f 00 00 49 81 7d 00 a0 29 b5 90 0f 84 8e f2 RSP: 0018:ffffc9001063ef58 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 000000000000001d RSI: ffff88801c981dc0 RDI: 00000000000000e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f193a97 R11: 0000000000000002 R12: 0000000000000000 R13: 00000000000000e8 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f48cfdfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5351175198 CR3: 000000002829e000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 11 00 adc %eax,(%rax) 2: 00 39 add %bh,(%rcx) 4: 05 c8 51 f6 0f add $0xff651c8,%eax 9: 0f 82 c3 05 00 00 jb 0x5d2 f: ba 01 00 00 00 mov $0x1,%edx 14: e9 e4 00 00 00 jmp 0xfd 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 ea mov %r13,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 26 1f 00 00 jne 0x1f5a 34: 49 81 7d 00 a0 29 b5 cmpq $0xffffffff90b529a0,0x0(%r13) 3b: 90 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: 8e f2 mov %edx,%?