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:00007fb9c25e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007fb9c19b5fa0 RCX: 00007fb9c178ebe9 RDX: 0000000000000486 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fb9c25e1090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000ffe R11: 0000000000000246 R12: 0000000000000001 R13: 00007fb9c19b6038 R14: 00007fb9c19b5fa0 R15: 00007ffce08e6318 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 6882 Comm: syz.0.193 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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:ffffc9000b7f7a50 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888032a0e708 RDX: 0000000000000000 RSI: ffffffff85192d6e RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8e78aa53 R11: 0000000000000001 R12: ffffffff8c19e360 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888032a0e708 FS: 00007fb9c25e16c0(0000) GS:ffff8881247c3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f08e2dfa9a0 CR3: 0000000051fdc000 CR4: 00000000003526f0 Call Trace: traverse.part.0.constprop.0+0x2bd/0x640 fs/seq_file.c:131 traverse fs/seq_file.c:98 [inline] seq_read_iter+0x932/0x12c0 fs/seq_file.c:195 seq_read+0x3a3/0x570 fs/seq_file.c:162 full_proxy_read+0x12e/0x1a0 fs/debugfs/file.c:378 vfs_read+0x1e4/0xcf0 fs/read_write.c:570 ksys_pread64 fs/read_write.c:763 [inline] __do_sys_pread64 fs/read_write.c:771 [inline] __se_sys_pread64 fs/read_write.c:768 [inline] __x64_sys_pread64+0x1eb/0x250 fs/read_write.c:768 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: 0033:0x7fb9c178ebe9 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:00007fb9c25e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007fb9c19b5fa0 RCX: 00007fb9c178ebe9 RDX: 0000000000000486 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fb9c25e1090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000ffe R11: 0000000000000246 R12: 0000000000000001 R13: 00007fb9c19b6038 R14: 00007fb9c19b5fa0 R15: 00007ffce08e6318 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:ffffc9000b7f7a50 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888032a0e708 RDX: 0000000000000000 RSI: ffffffff85192d6e RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8e78aa53 R11: 0000000000000001 R12: ffffffff8c19e360 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888032a0e708 FS: 00007fb9c25e16c0(0000) GS:ffff8881247c3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f75f15b66d0 CR3: 0000000051fdc000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 ret 32: 48 c7 c1 a8 ff ff ff mov $0xffffffffffffffa8,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W