Extracting prog: 34m32.296582428s Minimizing prog: 1h51m57.354663814s Simplifying prog options: 0s Extracting C: 3m10.430961092s Simplifying C: 23m40.12710161s extracting reproducer from 49 programs testing a last program of every proc single: executing 14 programs separately with timeout 6m0s testing program (duration=6m0s, {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}}): bpf$MAP_CREATE-prctl$PR_SCHED_CORE-prlimit64-sched_setaffinity-sched_setscheduler-syz_open_dev$MSR-read$msr-fsopen-mount detailed listing: executing program 0: bpf$MAP_CREATE(0x0, 0x0, 0x48) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) prlimit64(0x0, 0xe, &(0x7f00000003c0)={0x4, 0x80100008b}, 0x0) sched_setaffinity(0x0, 0x11, &(0x7f0000000180)=0x1400200bce) sched_setscheduler(0x0, 0x1, &(0x7f0000002200)=0x1) r0 = syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0) read$msr(r0, &(0x7f0000002700)=""/102392, 0x18ff8) fsopen(0x0, 0x0) mount(&(0x7f0000000140)=@nullb, &(0x7f0000000040)='./cgroup\x00', &(0x7f0000000000)='squashfs\x00', 0x208000, 0x0) program did not crash testing program (duration=6m0s, {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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-prctl$PR_SCHED_CORE-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-getpid-sched_setscheduler-mmap detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f00000000c0)='mm_lru_activate\x00', r0}, 0x18) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x7, 0x100}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r1 = getpid() sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x6) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x0, 0x0) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f000057eff8)=@file={0x0, './cgroup\x00'}, 0x6e) sendmmsg$unix(r3, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) getpid() sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {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}}): bpf$MAP_CREATE-prctl$PR_SCHED_CORE-prlimit64-sched_setaffinity-sched_setscheduler-syz_open_dev$MSR-read$msr-fsopen-mount detailed listing: executing program 0: bpf$MAP_CREATE(0x0, 0x0, 0x48) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) prlimit64(0x0, 0xe, &(0x7f00000003c0)={0x4, 0x80100008b}, 0x0) sched_setaffinity(0x0, 0x11, &(0x7f0000000180)=0x1400200bce) sched_setscheduler(0x0, 0x1, &(0x7f0000002200)=0x1) r0 = syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0) read$msr(r0, &(0x7f0000002700)=""/102392, 0x18ff8) fsopen(0x0, 0x0) mount(&(0x7f0000000140)=@nullb, &(0x7f0000000040)='./cgroup\x00', &(0x7f0000000000)='squashfs\x00', 0x208000, 0x0) program did not crash testing program (duration=6m0s, {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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-prctl$PR_SCHED_CORE-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-getpid-sched_setscheduler-mmap detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f00000000c0)='mm_lru_activate\x00', r0}, 0x18) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x7, 0x100}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r1 = getpid() sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x6) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x0, 0x0) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f000057eff8)=@file={0x0, './cgroup\x00'}, 0x6e) sendmmsg$unix(r3, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) getpid() sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync-connect$can_bcm-sendmmsg$unix-ioctl$SNDRV_CTL_IOCTL_ELEM_REPLACE-pread64 detailed listing: executing program 0: r0 = syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r1 = syz_open_dev$usbfs(&(0x7f00000000c0), 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$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r6 = dup(0xffffffffffffffff) r7 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r7, 0x40946400, 0x0) ioctl$COMEDI_DEVCONFIG(r7, 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$RDMA_USER_CM_CMD_CREATE_ID(r6, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) connect$can_bcm(0xffffffffffffffff, 0x0, 0x0) sendmmsg$unix(0xffffffffffffffff, 0x0, 0x0, 0x0) ioctl$SNDRV_CTL_IOCTL_ELEM_REPLACE(r6, 0xc1105518, &(0x7f00000002c0)={{0x6, 0x6, 0x0, 0x10001, 'syz1\x00', 0x378}, 0x3, 0x10000000, 0x0, r3, 0x0, 0x80000000, 'syz1\x00', 0x0}) pread64(r0, &(0x7f0000001240)=""/102400, 0x19000, 0x1000000300) program crashed: INFO: task hung in comedi_open single: successfully extracted reproducer found reproducer with 25 syscalls minimizing guilty program testing program (duration=6m0s, {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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync-connect$can_bcm-sendmmsg$unix-ioctl$SNDRV_CTL_IOCTL_ELEM_REPLACE detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 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$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = dup(0xffffffffffffffff) r6 = openat$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$RDMA_USER_CM_CMD_CREATE_ID(r5, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) connect$can_bcm(0xffffffffffffffff, 0x0, 0x0) sendmmsg$unix(0xffffffffffffffff, 0x0, 0x0, 0x0) ioctl$SNDRV_CTL_IOCTL_ELEM_REPLACE(r5, 0xc1105518, &(0x7f00000002c0)={{0x6, 0x6, 0x0, 0x10001, 'syz1\x00', 0x378}, 0x3, 0x10000000, 0x0, r2, 0x0, 0x80000000, 'syz1\x00', 0x0}) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync-connect$can_bcm-sendmmsg$unix detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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 = dup(0xffffffffffffffff) 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(r5, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) connect$can_bcm(0xffffffffffffffff, 0x0, 0x0) sendmmsg$unix(0xffffffffffffffff, 0x0, 0x0, 0x0) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVCONFIG-write$RDMA_USER_CM_CMD_CREATE_ID-msync-connect$can_bcm detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 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$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = dup(0xffffffffffffffff) r6 = openat$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$RDMA_USER_CM_CMD_CREATE_ID(r5, 0x0, 0x0) msync(&(0x7f0000063000/0x2000)=nil, 0x2000, 0x5) connect$can_bcm(0xffffffffffffffff, 0x0, 0x0) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {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_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-dup-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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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 = dup(0xffffffffffffffff) 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(r5, 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: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_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-dup-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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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 = dup(0xffffffffffffffff) 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(r5, 0x0, 0x0) program crashed: INFO: task hung in comedi_open testing program (duration=6m0s, {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_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-dup-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(&(0x7f00000000c0), 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$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) dup(0xffffffffffffffff) r5 = openat$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: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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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) dup(0xffffffffffffffff) 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: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_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-dup-openat$comedi-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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) dup(0xffffffffffffffff) 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: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_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-dup-ioctl$COMEDI_DEVCONFIG detailed listing: executing program 0: syz_open_procfs(0x0, &(0x7f0000000000)='pagemap\x00') r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 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$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) dup(0xffffffffffffffff) ioctl$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: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_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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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: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_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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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: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_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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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: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_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(&(0x7f00000000c0), 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: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_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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) r1 = bpf$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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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$usbfs(&(0x7f00000000c0), 0x204, 0x2) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) bpf$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: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_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(&(0x7f00000000c0), 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: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_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(&(0x7f00000000c0), 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: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_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: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}}): 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: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}}): 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: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}}): 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: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}}): 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: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}}): 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:4 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:4 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:4 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:4 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:4 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:4 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:4 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:4 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 3h2m57.831476312s repro crashed as (corrupted=false): INFO: task syz.3.20:6003 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.20 state:D stack:26440 pid:6003 ppid:5908 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747 comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 chrdev_open+0x59e/0x670 fs/char_dev.c:414 do_dentry_open+0x8c6/0x1500 fs/open.c:929 do_open fs/namei.c:3640 [inline] path_openat+0x274b/0x3190 fs/namei.c:3797 do_filp_open+0x1c5/0x3d0 fs/namei.c:3824 do_sys_openat2+0x12c/0x1c0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2d4398f749 RSP: 002b:00007ffdde6b6a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f2d43be5fa0 RCX: 00007f2d4398f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f2d43a13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2d43be5fa0 R14: 00007f2d43be5fa0 R15: 0000000000000004 INFO: task syz.2.19:6005 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:26664 pid:6005 ppid:5901 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747 comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 chrdev_open+0x59e/0x670 fs/char_dev.c:414 do_dentry_open+0x8c6/0x1500 fs/open.c:929 do_open fs/namei.c:3640 [inline] path_openat+0x274b/0x3190 fs/namei.c:3797 do_filp_open+0x1c5/0x3d0 fs/namei.c:3824 do_sys_openat2+0x12c/0x1c0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb7de98f749 RSP: 002b:00007ffc232830f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb7debe5fa0 RCX: 00007fb7de98f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007fb7dea13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb7debe5fa0 R14: 00007fb7debe5fa0 R15: 0000000000000004 Showing all locks held in the system: 3 locks held by kworker/u4:1/12: #0: ffff88802c1bd138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff88802c1bd138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x14e0 net/ipv6/addrconf.c:4158 1 lock held by khungtaskd/29: #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline] #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633 2 locks held by kworker/u4:3/49: 3 locks held by kworker/u4:9/1143: #0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc900045bfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc900045bfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:286 3 locks held by kworker/u4:12/3481: 2 locks held by getty/5528: #0: ffff88802d15a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217 2 locks held by kworker/0:6/5996: #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc90003207d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc90003207d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 2 locks held by syz.0.17/6001: 1 lock held by syz.3.20/6003: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.2.19/6005: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.1.18/6010: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.5.22/6122: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.4.21/6123: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.7.24/6125: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.6.23/6126: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.8.25/6219: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.9.26/6220: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.0.27/6221: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.2.28/6223: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.3.29/6280: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.1.30/6320: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.4.32/6327: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.5.31/6328: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.7.33/6369: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz-executor/6373: #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x32c/0x1c60 net/ipv4/devinet.c:1101 1 lock held by syz.6.34/6421: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 2 locks held by syz-executor/6439: #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x76f/0xf10 net/core/rtnetlink.c:6469 #1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x448/0x830 kernel/rcu/tree_exp.h:1004 1 lock held by syz.8.35/6444: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 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+0x16c/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf41/0xf80 kernel/hung_task.c:379 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5988 Comm: kworker/1:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:60 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:127 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:178 [inline] RIP: 0010:kasan_check_range+0x3d/0x290 mm/kasan/generic.c:187 Code: 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 5a 02 00 00 49 89 f9 49 c1 e9 2f 41 81 f9 ff ff 01 00 0f 82 46 02 00 00 49 89 ff <49> c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 4d RSP: 0018:ffffc90003237768 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 00000000000007da RCX: ffffffff81670bf0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90d945f8 RBP: ffffc900032379e8 R08: ffffffff90d94600 R09: 000000000001ffff R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 0000000000000000 R13: ffff888030c49e00 R14: ffff888030c4a930 R15: ffffffff90d945f8 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556468a5c8 CR3: 000000002df2b000 CR4: 00000000003506e0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xda0/0x7c80 kernel/locking/lockdep.c:5107 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] wg_ratelimiter_gc_entries+0x5d/0x450 drivers/net/wireguard/ratelimiter.c:63 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 final repro crashed as (corrupted=false): INFO: task syz.3.20:6003 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.20 state:D stack:26440 pid:6003 ppid:5908 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747 comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 chrdev_open+0x59e/0x670 fs/char_dev.c:414 do_dentry_open+0x8c6/0x1500 fs/open.c:929 do_open fs/namei.c:3640 [inline] path_openat+0x274b/0x3190 fs/namei.c:3797 do_filp_open+0x1c5/0x3d0 fs/namei.c:3824 do_sys_openat2+0x12c/0x1c0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2d4398f749 RSP: 002b:00007ffdde6b6a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f2d43be5fa0 RCX: 00007f2d4398f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f2d43a13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2d43be5fa0 R14: 00007f2d43be5fa0 R15: 0000000000000004 INFO: task syz.2.19:6005 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:26664 pid:6005 ppid:5901 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747 comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 chrdev_open+0x59e/0x670 fs/char_dev.c:414 do_dentry_open+0x8c6/0x1500 fs/open.c:929 do_open fs/namei.c:3640 [inline] path_openat+0x274b/0x3190 fs/namei.c:3797 do_filp_open+0x1c5/0x3d0 fs/namei.c:3824 do_sys_openat2+0x12c/0x1c0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb7de98f749 RSP: 002b:00007ffc232830f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb7debe5fa0 RCX: 00007fb7de98f749 RDX: 0000000000000400 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007fb7dea13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb7debe5fa0 R14: 00007fb7debe5fa0 R15: 0000000000000004 Showing all locks held in the system: 3 locks held by kworker/u4:1/12: #0: ffff88802c1bd138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff88802c1bd138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x14e0 net/ipv6/addrconf.c:4158 1 lock held by khungtaskd/29: #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline] #0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633 2 locks held by kworker/u4:3/49: 3 locks held by kworker/u4:9/1143: #0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888017871538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc900045bfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc900045bfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #2: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:286 3 locks held by kworker/u4:12/3481: 2 locks held by getty/5528: #0: ffff88802d15a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217 2 locks held by kworker/0:6/5996: #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc90003207d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc90003207d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 2 locks held by syz.0.17/6001: 1 lock held by syz.3.20/6003: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.2.19/6005: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.1.18/6010: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.5.22/6122: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.4.21/6123: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.7.24/6125: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.6.23/6126: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.8.25/6219: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.9.26/6220: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.0.27/6221: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.2.28/6223: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.3.29/6280: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.1.30/6320: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.4.32/6327: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.5.31/6328: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz.7.33/6369: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 1 lock held by syz-executor/6373: #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x32c/0x1c60 net/ipv4/devinet.c:1101 1 lock held by syz.6.34/6421: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 2 locks held by syz-executor/6439: #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8dfb5448 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x76f/0xf10 net/core/rtnetlink.c:6469 #1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffffffff8cd358f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x448/0x830 kernel/rcu/tree_exp.h:1004 1 lock held by syz.8.35/6444: #0: ffff88802bb2e0f8 (&dev->mutex#3){+.+.}-{3:3}, at: comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2816 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 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+0x16c/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf41/0xf80 kernel/hung_task.c:379 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5988 Comm: kworker/1:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:60 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:127 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:178 [inline] RIP: 0010:kasan_check_range+0x3d/0x290 mm/kasan/generic.c:187 Code: 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 5a 02 00 00 49 89 f9 49 c1 e9 2f 41 81 f9 ff ff 01 00 0f 82 46 02 00 00 49 89 ff <49> c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 4d RSP: 0018:ffffc90003237768 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 00000000000007da RCX: ffffffff81670bf0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90d945f8 RBP: ffffc900032379e8 R08: ffffffff90d94600 R09: 000000000001ffff R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 0000000000000000 R13: ffff888030c49e00 R14: ffff888030c4a930 R15: ffffffff90d945f8 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556468a5c8 CR3: 000000002df2b000 CR4: 00000000003506e0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xda0/0x7c80 kernel/locking/lockdep.c:5107 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] wg_ratelimiter_gc_entries+0x5d/0x450 drivers/net/wireguard/ratelimiter.c:63 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293