Oops: general protection fault, probably for non-canonical address 0xdffffc000000002f: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000178-0x000000000000017f] CPU: 1 UID: 0 PID: 22092 Comm: syz-executor.7 Not tainted 6.13.0-rc1-next-20241203 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:perf_mmap_to_page+0x2f/0x4f0 Code: 56 41 55 41 54 49 89 f4 55 53 48 89 fb e8 89 53 ea ff 48 8d bb 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e5 03 00 00 48 63 ab 78 01 00 RSP: 0018:ffff888040fbf888 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90006214000 RDX: 000000000000002f RSI: ffffffff81678cc7 RDI: 0000000000000178 RBP: 0000000000000003 R08: 0000000000000001 R09: ffffed1001b6a887 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88800d5b57e0 R14: 0000000000000003 R15: 0000000020ffd000 FS: 00007fd34d483700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30422000 CR3: 000000003f614000 CR4: 0000000000350ef0 Call Trace: perf_mmap+0xbbd/0x1d00 __mmap_region+0xfa8/0x22b0 mmap_region+0x248/0x300 do_mmap+0xa26/0x1070 vm_mmap_pgoff+0x1fe/0x390 ksys_mmap_pgoff+0x3d7/0x520 __x64_sys_mmap+0x127/0x190 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd34ff0db19 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:00007fd34d483188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fd350020f60 RCX: 00007fd34ff0db19 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 00007fd34ff67f6d R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdcba2a1cf R14: 00007fd34d483300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:perf_mmap_to_page+0x2f/0x4f0 Code: 56 41 55 41 54 49 89 f4 55 53 48 89 fb e8 89 53 ea ff 48 8d bb 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e5 03 00 00 48 63 ab 78 01 00 RSP: 0018:ffff888040fbf888 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90006214000 RDX: 000000000000002f RSI: ffffffff81678cc7 RDI: 0000000000000178 RBP: 0000000000000003 R08: 0000000000000001 R09: ffffed1001b6a887 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88800d5b57e0 R14: 0000000000000003 R15: 0000000020ffd000 FS: 00007fd34d483700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30422000 CR3: 000000003f614000 CR4: 0000000000350ef0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. ---------------- Code disassembly (best guess): 0: 56 push %rsi 1: 41 55 push %r13 3: 41 54 push %r12 5: 49 89 f4 mov %rsi,%r12 8: 55 push %rbp 9: 53 push %rbx a: 48 89 fb mov %rdi,%rbx d: e8 89 53 ea ff callq 0xffea539b 12: 48 8d bb 78 01 00 00 lea 0x178(%rbx),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e e5 03 00 00 jle 0x41f 3a: 48 rex.W 3b: 63 .byte 0x63 3c: ab stos %eax,%es:(%rdi) 3d: 78 01 js 0x40