general protection fault, probably for non-canonical address 0xdffffc000000001d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000e8-0x00000000000000ef] CPU: 0 PID: 6410 Comm: syz-executor.0 Not tainted 6.6.0-syzkaller-12893-ge392ea4d4d00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__lock_acquire+0x109/0x7f70 kernel/locking/lockdep.c:5004 Code: 85 75 18 00 00 83 3d d1 80 2e 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d f0 ad b2 0b 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 68 97 7f 00 48 8b 94 24 80 00 00 RSP: 0018:ffffc9000324f440 EFLAGS: 00010006 RAX: 000000000000001d RBX: 1ffff92000649eac RCX: 0000000000000000 RDX: 00000000000000e8 RSI: 0000000000000000 RDI: 00000000000000e8 RBP: ffffc9000324f708 R08: dffffc0000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1d3657e R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880280f3b80 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000024dc7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1df/0x520 kernel/locking/lockdep.c:5753 down_write+0x36/0x50 kernel/locking/rwsem.c:1579 __hugetlb_zap_begin+0x2dc/0x380 mm/hugetlb.c:5708 hugetlb_zap_begin include/linux/hugetlb.h:258 [inline] unmap_vmas+0x360/0x5c0 mm/memory.c:1742 exit_mmap+0x293/0xc20 mm/mmap.c:3308 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21b/0x2f0 kernel/exit.c:567 do_exit+0x9b3/0x2740 kernel/exit.c:858 __do_sys_exit kernel/exit.c:988 [inline] __se_sys_exit kernel/exit.c:986 [inline] __x64_sys_exit+0x3c/0x40 kernel/exit.c:986 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f1cf2a7cae9 Code: Unable to access opcode bytes at 0x7f1cf2a7cabf. RSP: 002b:00007f1cf3873078 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 00007f1cf2b9bf80 RCX: 00007f1cf2a7cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f1cf2ac847a R08: 0000000020000000 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1cf2b9bf80 R15: 00007ffc7206db98 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x109/0x7f70 kernel/locking/lockdep.c:5004 Code: 85 75 18 00 00 83 3d d1 80 2e 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d f0 ad b2 0b 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 68 97 7f 00 48 8b 94 24 80 00 00 RSP: 0018:ffffc9000324f440 EFLAGS: 00010006 RAX: 000000000000001d RBX: 1ffff92000649eac RCX: 0000000000000000 RDX: 00000000000000e8 RSI: 0000000000000000 RDI: 00000000000000e8 RBP: ffffc9000324f708 R08: dffffc0000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1d3657e R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880280f3b80 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000024dc7000 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 d1 80 2e 0d 00 cmpl $0x0,0xd2e80d1(%rip) # 0xd2e80dd 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 f0 ad b2 0b 00 cmpl $0x0,0xbb2adf0(%rip) # 0xbb2ae11 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 68 97 7f 00 call 0x7f97a1 39: 48 rex.W 3a: 8b .byte 0x8b 3b: 94 xchg %eax,%esp 3c: 24 80 and $0x80,%al