RDX: 00000000000000fc RSI: 0000200000000800 RDI: 0000000000000003 RBP: 00007f953a322090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f95397b5fa0 R15: 00007ffc7520c1a8 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 12334 Comm: syz.1.1622 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:gpiolib_seq_stop+0x4c/0xe0 drivers/gpio/gpiolib.c:5306 Code: 48 c1 ea 03 80 3c 02 00 0f 85 98 00 00 00 48 8b 9b e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 60 8b RSP: 0018:ffffc9000b1c7ad8 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000400 RDX: 0000000000000000 RSI: ffffffff850fd29e RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8e792933 R11: fffffffffffe0e08 R12: 0000000000000000 R13: ffffffff8c195740 R14: 00000000000000fc R15: 0000000000000000 FS: 00007f953a3226c0(0000) GS:ffff888124761000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30004ff8 CR3: 0000000033d6a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: seq_read_iter+0x60d/0x12c0 fs/seq_file.c:251 seq_read+0x39e/0x4e0 fs/seq_file.c:162 full_proxy_read+0x13f/0x200 fs/debugfs/file.c:393 vfs_read+0x1e1/0xc60 fs/read_write.c:570 ksys_read+0x12a/0x250 fs/read_write.c:715 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f953958e929 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:00007f953a322038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f95397b5fa0 RCX: 00007f953958e929 RDX: 00000000000000fc RSI: 0000200000000800 RDI: 0000000000000003 RBP: 00007f953a322090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f95397b5fa0 R15: 00007ffc7520c1a8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gpiolib_seq_stop+0x4c/0xe0 drivers/gpio/gpiolib.c:5306 Code: 48 c1 ea 03 80 3c 02 00 0f 85 98 00 00 00 48 8b 9b e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 60 8b RSP: 0018:ffffc9000b1c7ad8 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000400 RDX: 0000000000000000 RSI: ffffffff850fd29e RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8e792933 R11: fffffffffffe0e08 R12: 0000000000000000 R13: ffffffff8c195740 R14: 00000000000000fc R15: 0000000000000000 FS: 00007f953a3226c0(0000) GS:ffff888124861000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000003e0000 CR3: 0000000033d6a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 98 00 00 00 jne 0xa6 e: 48 8b 9b e0 00 00 00 mov 0xe0(%rbx),%rbx 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 8d 7b 04 lea 0x4(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 04 jl 0x3f 3b: 84 d2 test %dl,%dl 3d: 75 60 jne 0x9f 3f: 8b .byte 0x8b