Extracting prog: 2m49.772486188s Minimizing prog: 13m2.734682661s Simplifying prog options: 0s Extracting C: 2m9.623772586s Simplifying C: 9m2.41349389s extracting reproducer from 66 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program crashed: general protection fault in io_uring_show_fdinfo single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) lseek(0xffffffffffffffff, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0), &(0x7f00000001c0)) r0 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r0, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r0 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r0, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, 0x0, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, 0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r0 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r0, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, 0x0, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program did not crash testing program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, 0x0) lseek(r1, 0x4, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=45.455997903s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo simplifying C reproducer testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing compiled C program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek program crashed: general protection fault in io_uring_show_fdinfo testing program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program crashed: general protection fault in io_uring_show_fdinfo validation run: crashed=true testing program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program crashed: general protection fault in io_uring_show_fdinfo validation run: crashed=true testing program (duration=45.455997903s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_open_procfs-lseek detailed listing: executing program 0: syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x8, 0x1, 0x40000333}, &(0x7f0000000dc0)=0x0, &(0x7f00000001c0)) syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4) r1 = syz_open_procfs(0x0, &(0x7f0000000240)='fdinfo/3\x00') lseek(r1, 0x4, 0x0) program crashed: general protection fault in io_uring_show_fdinfo validation run: crashed=true reproducing took 32m13.309286643s repro crashed as (corrupted=false): 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: 5985 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__io_uring_show_fdinfo io_uring/fdinfo.c:103 [inline] RIP: 0010:io_uring_show_fdinfo+0x371/0x1840 io_uring/fdinfo.c:255 Code: 0f 85 29 04 00 00 45 8b 36 44 89 f7 44 89 ee e8 15 3b 95 00 45 39 ee 76 11 e8 4b 39 95 00 45 89 fd 4c 8b 3c 24 e9 c9 03 00 00 <80> 3b 00 45 89 fd 0f 85 17 04 00 00 0f b6 2c 25 00 00 00 00 48 8b RSP: 0018:ffffc90004057c90 EFLAGS: 00010293 RAX: ffffffff812b443b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888025a69e40 RSI: 0000000000000fff RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880311580aa R09: 1ffff1100622b015 R10: dffffc0000000000 R11: ffffed100622b016 R12: 0000000000000008 R13: 0000000000000fff R14: 0000000000000000 R15: 0000000000000000 FS: 000055557d020500(0000) GS:ffff888125ce4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fd63fff CR3: 000000006ad96000 CR4: 00000000003526f0 Call Trace: seq_show+0x5bc/0x730 fs/proc/fd.c:68 traverse+0x1ee/0x580 fs/seq_file.c:111 seq_lseek+0x134/0x260 fs/seq_file.c:323 vfs_llseek fs/read_write.c:389 [inline] ksys_lseek fs/read_write.c:402 [inline] __do_sys_lseek fs/read_write.c:412 [inline] __se_sys_lseek fs/read_write.c:410 [inline] __x64_sys_lseek+0x14f/0x1e0 fs/read_write.c:410 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa55138efc9 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:00007ffc4b1fdbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008 RAX: ffffffffffffffda RBX: 00007fa5515e5fa0 RCX: 00007fa55138efc9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007fa551411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa5515e5fa0 R14: 00007fa5515e5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__io_uring_show_fdinfo io_uring/fdinfo.c:103 [inline] RIP: 0010:io_uring_show_fdinfo+0x371/0x1840 io_uring/fdinfo.c:255 Code: 0f 85 29 04 00 00 45 8b 36 44 89 f7 44 89 ee e8 15 3b 95 00 45 39 ee 76 11 e8 4b 39 95 00 45 89 fd 4c 8b 3c 24 e9 c9 03 00 00 <80> 3b 00 45 89 fd 0f 85 17 04 00 00 0f b6 2c 25 00 00 00 00 48 8b RSP: 0018:ffffc90004057c90 EFLAGS: 00010293 RAX: ffffffff812b443b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888025a69e40 RSI: 0000000000000fff RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880311580aa R09: 1ffff1100622b015 R10: dffffc0000000000 R11: ffffed100622b016 R12: 0000000000000008 R13: 0000000000000fff R14: 0000000000000000 R15: 0000000000000000 FS: 000055557d020500(0000) GS:ffff888125de4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d020808 CR3: 000000006ad96000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 0f 85 29 04 00 00 jne 0x42f 6: 45 8b 36 mov (%r14),%r14d 9: 44 89 f7 mov %r14d,%edi c: 44 89 ee mov %r13d,%esi f: e8 15 3b 95 00 call 0x953b29 14: 45 39 ee cmp %r13d,%r14d 17: 76 11 jbe 0x2a 19: e8 4b 39 95 00 call 0x953969 1e: 45 89 fd mov %r15d,%r13d 21: 4c 8b 3c 24 mov (%rsp),%r15 25: e9 c9 03 00 00 jmp 0x3f3 * 2a: 80 3b 00 cmpb $0x0,(%rbx) <-- trapping instruction 2d: 45 89 fd mov %r15d,%r13d 30: 0f 85 17 04 00 00 jne 0x44d 36: 0f b6 2c 25 00 00 00 movzbl 0x0,%ebp 3d: 00 3e: 48 rex.W 3f: 8b .byte 0x8b final repro crashed as (corrupted=false): 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: 5985 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__io_uring_show_fdinfo io_uring/fdinfo.c:103 [inline] RIP: 0010:io_uring_show_fdinfo+0x371/0x1840 io_uring/fdinfo.c:255 Code: 0f 85 29 04 00 00 45 8b 36 44 89 f7 44 89 ee e8 15 3b 95 00 45 39 ee 76 11 e8 4b 39 95 00 45 89 fd 4c 8b 3c 24 e9 c9 03 00 00 <80> 3b 00 45 89 fd 0f 85 17 04 00 00 0f b6 2c 25 00 00 00 00 48 8b RSP: 0018:ffffc90004057c90 EFLAGS: 00010293 RAX: ffffffff812b443b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888025a69e40 RSI: 0000000000000fff RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880311580aa R09: 1ffff1100622b015 R10: dffffc0000000000 R11: ffffed100622b016 R12: 0000000000000008 R13: 0000000000000fff R14: 0000000000000000 R15: 0000000000000000 FS: 000055557d020500(0000) GS:ffff888125ce4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fd63fff CR3: 000000006ad96000 CR4: 00000000003526f0 Call Trace: seq_show+0x5bc/0x730 fs/proc/fd.c:68 traverse+0x1ee/0x580 fs/seq_file.c:111 seq_lseek+0x134/0x260 fs/seq_file.c:323 vfs_llseek fs/read_write.c:389 [inline] ksys_lseek fs/read_write.c:402 [inline] __do_sys_lseek fs/read_write.c:412 [inline] __se_sys_lseek fs/read_write.c:410 [inline] __x64_sys_lseek+0x14f/0x1e0 fs/read_write.c:410 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa55138efc9 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:00007ffc4b1fdbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008 RAX: ffffffffffffffda RBX: 00007fa5515e5fa0 RCX: 00007fa55138efc9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007fa551411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa5515e5fa0 R14: 00007fa5515e5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__io_uring_show_fdinfo io_uring/fdinfo.c:103 [inline] RIP: 0010:io_uring_show_fdinfo+0x371/0x1840 io_uring/fdinfo.c:255 Code: 0f 85 29 04 00 00 45 8b 36 44 89 f7 44 89 ee e8 15 3b 95 00 45 39 ee 76 11 e8 4b 39 95 00 45 89 fd 4c 8b 3c 24 e9 c9 03 00 00 <80> 3b 00 45 89 fd 0f 85 17 04 00 00 0f b6 2c 25 00 00 00 00 48 8b RSP: 0018:ffffc90004057c90 EFLAGS: 00010293 RAX: ffffffff812b443b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888025a69e40 RSI: 0000000000000fff RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880311580aa R09: 1ffff1100622b015 R10: dffffc0000000000 R11: ffffed100622b016 R12: 0000000000000008 R13: 0000000000000fff R14: 0000000000000000 R15: 0000000000000000 FS: 000055557d020500(0000) GS:ffff888125de4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d020808 CR3: 000000006ad96000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 0f 85 29 04 00 00 jne 0x42f 6: 45 8b 36 mov (%r14),%r14d 9: 44 89 f7 mov %r14d,%edi c: 44 89 ee mov %r13d,%esi f: e8 15 3b 95 00 call 0x953b29 14: 45 39 ee cmp %r13d,%r14d 17: 76 11 jbe 0x2a 19: e8 4b 39 95 00 call 0x953969 1e: 45 89 fd mov %r15d,%r13d 21: 4c 8b 3c 24 mov (%rsp),%r15 25: e9 c9 03 00 00 jmp 0x3f3 * 2a: 80 3b 00 cmpb $0x0,(%rbx) <-- trapping instruction 2d: 45 89 fd mov %r15d,%r13d 30: 0f 85 17 04 00 00 jne 0x44d 36: 0f b6 2c 25 00 00 00 movzbl 0x0,%ebp 3d: 00 3e: 48 rex.W 3f: 8b .byte 0x8b