Extracting prog: 3m30.113359738s Minimizing prog: 1h49m35.508382615s Simplifying prog options: 0s Extracting C: 3m7.531201121s Simplifying C: 27m37.398689s extracting reproducer from 56 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync-pread64 detailed listing: executing program 0: r0 = syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r1 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r1, 0x0) r2 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r2}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r3 = getpid() sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r6 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r6, 0x40946400, 0x0) ioctl$COMEDI_DEVCONFIG(r6, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) pread64(r0, &(0x7f0000001240)=""/102400, 0x19000, 0x1000000300) program crashed: INFO: task hung in comedi_open single: successfully extracted reproducer found reproducer with 21 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) write$RDMA_USER_CM_CMD_CREATE_ID(0xffffffffffffffff, 0x0, 0x0) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) ioctl$COMEDI_DEVCONFIG(0xffffffffffffffff, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs={0x0, 0x0, 0x4e22}, 0x6e) r4 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r4, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)) r3 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r3, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) r3 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r3, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) r3 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r3, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) getpid() r2 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r2, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000240)=0x7) r2 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r2, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x2a, 0xa9}, 0x0) r2 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r2, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r1}, 0x10) r2 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r2, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000009c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0xcc657405ba8b63ff}, 0x94) r1 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r1, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-mmap-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(0x0, 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r1, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-syz_open_dev$usbfs-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') syz_open_dev$usbfs(0x0, 0x204, 0x2) r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_open_procfs-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, 0x0, 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'multiq3\x00', [0x2000, 0x0, 0x100c139, 0x4, 0x4, 0x5, 0x0, 0x4, 0x54c6cff3, 0xfd, 0x2, 0x1, 0x1, 0x9, 0x6, 0x8104, 0xfffffffe, 0xffff, 0x3, 0x40000003, 0x8b, 0x6, 0x2, 0x20001e5b, 0x8000003, 0xe69, 0x3, 0x8, 0x4086, 0x0, 0xfffffff8]}) program crashed: INFO: task hung in comedi_open validation run: crashed=true reproducing took 2h33m49.461140868s repro crashed as (corrupted=false): INFO: task syz.2.19:4523 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.19 state:D stack:26688 pid:4523 ppid:4401 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa1e0b8f749 RSP: 002b:00007ffcd8cdd9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa1e0de5fa0 RCX: 00007fa1e0b8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007fa1e0c13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa1e0de5fa0 R14: 00007fa1e0de5fa0 R15: 0000000000000004 INFO: task syz.1.18:4524 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:26688 pid:4524 ppid:4393 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9ee278f749 RSP: 002b:00007ffde7ecd698 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9ee29e5fa0 RCX: 00007f9ee278f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f9ee2813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9ee29e5fa0 R14: 00007f9ee29e5fa0 R15: 0000000000000004 INFO: task syz.3.20:4525 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.20 state:D stack:26688 pid:4525 ppid:4396 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7acfb8f749 RSP: 002b:00007ffe9179be78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7acfde5fa0 RCX: 00007f7acfb8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f7acfc13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7acfde5fa0 R14: 00007f7acfde5fa0 R15: 0000000000000004 INFO: task syz.0.17:4526 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:26688 pid:4526 ppid:4388 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a94f8f749 RSP: 002b:00007ffdee4fbf28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f0a951e5fa0 RCX: 00007f0a94f8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f0a95013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0a951e5fa0 R14: 00007f0a951e5fa0 R15: 0000000000000004 INFO: task syz.5.22:4559 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.22 state:D stack:26688 pid:4559 ppid:4528 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5456f8f749 RSP: 002b:00007fff5ab71038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f54571e5fa0 RCX: 00007f5456f8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f5457013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f54571e5fa0 R14: 00007f54571e5fa0 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c92bab0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c92c2d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by kworker/u4:4/75: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffff8880b8e27848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x398/0x6d0 kernel/sched/psi.c:999 2 locks held by getty/4029: #0: ffff88814d289098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 2 locks held by kworker/1:7/4351: #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90002fa7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 2 locks held by syz.4.21/4455: 1 lock held by syz.2.19/4523: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.18/4524: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.20/4525: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.17/4526: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.5.22/4559: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.6.23/4638: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.24/4681: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.9.26/4682: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.8.25/4683: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.4.27/4695: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.2.28/4717: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.29/4789: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.31/4805: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.30/4811: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.5.32/4819: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.6.33/4836: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.34/4873: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.8.35/4945: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.9.36/4966: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.4.37/4968: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.2.38/4969: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.39/4986: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.40/5007: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.41/5058: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz-executor/5077: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz.5.42/5115: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 8 locks held by syz-executor/5117: #0: ffff88807dc2c460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580 #1: ffff88804b16c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e3/0x520 fs/kernfs/file.c:343 #2: ffff888144790a00 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff888144790a00 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344 #3: ffffffff8d44d168 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xce/0x360 drivers/net/netdevsim/bus.c:209 #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:840 [inline] #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1080 [inline] #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb2/0x850 drivers/base/dd.c:1283 #5: ffff8880762782f8 (&devlink->lock_key#21){+.+.}-{3:3}, at: nsim_drv_remove+0x54/0x160 drivers/net/netdevsim/dev.c:1677 #6: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x3b/0x150 drivers/net/netdevsim/netdev.c:381 #7: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #7: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x830 kernel/rcu/tree_exp.h:962 1 lock held by syz.6.43/5121: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.44/5130: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4637 Comm: kworker/u4:8 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: phy42 ieee80211_iface_work RIP: 0010:stack_trace_consume_entry+0x0/0x270 kernel/stacktrace.c:83 Code: 48 8b 0c 25 28 00 00 00 48 3b 4c 24 78 75 09 48 8d 65 f0 5b 41 5e 5d c3 e8 1d a5 a0 08 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900038270a0 EFLAGS: 00000286 RAX: ffffffff81d0e81b RBX: ffffc90003827160 RCX: 0000000080000000 RDX: ffffc90003827001 RSI: ffffffff81d0e81b RDI: ffffc90003827160 RBP: ffffc90003827130 R08: ffffc900038271d0 R09: ffffc900038270f8 R10: fffff52000704e21 R11: 1ffff92000704e1f R12: ffff888018fcd940 R13: 0000000000000000 R14: ffffffff816fc770 R15: ffffc900038270a8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f2417ae9c CR3: 000000000c68e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xb0/0x240 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] kzalloc include/linux/slab.h:699 [inline] cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2484 [inline] cfg80211_inform_bss_frame_data+0x6a0/0x1370 net/wireless/scan.c:2545 ieee80211_bss_info_update+0x734/0xbc0 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x17b4/0x2b10 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 final repro crashed as (corrupted=false): INFO: task syz.2.19:4523 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.19 state:D stack:26688 pid:4523 ppid:4401 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa1e0b8f749 RSP: 002b:00007ffcd8cdd9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa1e0de5fa0 RCX: 00007fa1e0b8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007fa1e0c13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa1e0de5fa0 R14: 00007fa1e0de5fa0 R15: 0000000000000004 INFO: task syz.1.18:4524 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:26688 pid:4524 ppid:4393 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9ee278f749 RSP: 002b:00007ffde7ecd698 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9ee29e5fa0 RCX: 00007f9ee278f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f9ee2813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9ee29e5fa0 R14: 00007f9ee29e5fa0 R15: 0000000000000004 INFO: task syz.3.20:4525 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.20 state:D stack:26688 pid:4525 ppid:4396 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7acfb8f749 RSP: 002b:00007ffe9179be78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7acfde5fa0 RCX: 00007f7acfb8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f7acfc13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7acfde5fa0 R14: 00007f7acfde5fa0 R15: 0000000000000004 INFO: task syz.0.17:4526 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:26688 pid:4526 ppid:4388 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a94f8f749 RSP: 002b:00007ffdee4fbf28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f0a951e5fa0 RCX: 00007f0a94f8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f0a95013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0a951e5fa0 R14: 00007f0a951e5fa0 R15: 0000000000000004 INFO: task syz.5.22:4559 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.22 state:D stack:26688 pid:4559 ppid:4528 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747 comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x25c6/0x2e70 fs/namei.c:3791 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818 do_sys_openat2+0x142/0x490 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5456f8f749 RSP: 002b:00007fff5ab71038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f54571e5fa0 RCX: 00007f5456f8f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f5457013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f54571e5fa0 R14: 00007f54571e5fa0 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c92bab0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c92c2d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by kworker/u4:4/75: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffff8880b8e27848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x398/0x6d0 kernel/sched/psi.c:999 2 locks held by getty/4029: #0: ffff88814d289098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 2 locks held by kworker/1:7/4351: #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90002fa7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 2 locks held by syz.4.21/4455: 1 lock held by syz.2.19/4523: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.18/4524: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.20/4525: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.17/4526: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.5.22/4559: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.6.23/4638: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.24/4681: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.9.26/4682: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.8.25/4683: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.4.27/4695: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.2.28/4717: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.29/4789: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.31/4805: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.30/4811: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.5.32/4819: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.6.33/4836: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.34/4873: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.8.35/4945: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.9.36/4966: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.4.37/4968: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.2.38/4969: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.1.39/4986: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.3.40/5007: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.0.41/5058: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz-executor/5077: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz.5.42/5115: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 8 locks held by syz-executor/5117: #0: ffff88807dc2c460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580 #1: ffff88804b16c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e3/0x520 fs/kernfs/file.c:343 #2: ffff888144790a00 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff888144790a00 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344 #3: ffffffff8d44d168 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xce/0x360 drivers/net/netdevsim/bus.c:209 #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:840 [inline] #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1080 [inline] #4: ffff888142b010e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb2/0x850 drivers/base/dd.c:1283 #5: ffff8880762782f8 (&devlink->lock_key#21){+.+.}-{3:3}, at: nsim_drv_remove+0x54/0x160 drivers/net/netdevsim/dev.c:1677 #6: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x3b/0x150 drivers/net/netdevsim/netdev.c:381 #7: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #7: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x830 kernel/rcu/tree_exp.h:962 1 lock held by syz.6.43/5121: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 1 lock held by syz.7.44/5130: #0: ffff88802eb6b8f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xbc/0x580 drivers/comedi/comedi_fops.c:2811 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4637 Comm: kworker/u4:8 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: phy42 ieee80211_iface_work RIP: 0010:stack_trace_consume_entry+0x0/0x270 kernel/stacktrace.c:83 Code: 48 8b 0c 25 28 00 00 00 48 3b 4c 24 78 75 09 48 8d 65 f0 5b 41 5e 5d c3 e8 1d a5 a0 08 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900038270a0 EFLAGS: 00000286 RAX: ffffffff81d0e81b RBX: ffffc90003827160 RCX: 0000000080000000 RDX: ffffc90003827001 RSI: ffffffff81d0e81b RDI: ffffc90003827160 RBP: ffffc90003827130 R08: ffffc900038271d0 R09: ffffc900038270f8 R10: fffff52000704e21 R11: 1ffff92000704e1f R12: ffff888018fcd940 R13: 0000000000000000 R14: ffffffff816fc770 R15: ffffc900038270a8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f2417ae9c CR3: 000000000c68e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xb0/0x240 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] kzalloc include/linux/slab.h:699 [inline] cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2484 [inline] cfg80211_inform_bss_frame_data+0x6a0/0x1370 net/wireless/scan.c:2545 ieee80211_bss_info_update+0x734/0xbc0 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x17b4/0x2b10 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295