Extracting prog: 41.345987424s Minimizing prog: 26m15.533171447s Simplifying prog options: 4m25.439673287s Extracting C: 1m29.831719581s Simplifying C: 0s 30 programs, timeouts [30s 1m40s 6m0s] extracting reproducer from 30 programs testing a last program of every proc single: executing 5 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program crashed: WARNING: refcount bug in blk_mq_free_request single: successfully extracted reproducer found reproducer with 11 syscalls minimizing guilty program testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) ioctl$NBD_SET_SOCK(r2, 0xab00, 0xffffffffffffffff) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(0xffffffffffffffff, 0xab00, r2) ioctl$NBD_DO_IT(0xffffffffffffffff, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(0xffffffffffffffff, 0xab07, 0xb) r1 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r1, 0xab00, r2) ioctl$NBD_DO_IT(r1, 0xab03) ioctl$NBD_CLEAR_SOCK(0xffffffffffffffff, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: gettid() timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0xb) r1 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r1, 0xab00, r2) ioctl$NBD_DO_IT(r1, 0xab03) ioctl$NBD_CLEAR_SOCK(r0, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0xb) r1 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r1, 0xab00, r2) ioctl$NBD_DO_IT(r1, 0xab03) ioctl$NBD_CLEAR_SOCK(r0, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: gettid() timer_create(0x0, 0x0, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0xb) r1 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r1, 0xab00, r2) ioctl$NBD_DO_IT(r1, 0xab03) ioctl$NBD_CLEAR_SOCK(r0, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, 0x0) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, 0x0, 0x0) renameat2(0xffffffffffffffff, &(0x7f0000000080)='./file1\x00', 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program crashed: WARNING: refcount bug in blk_mq_free_request testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(0x0, 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(0x0, 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, 0x0) ioctl$NBD_SET_SOCK(r2, 0xab00, 0xffffffffffffffff) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash extracting C reproducer testing compiled C program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK program did not crash simplifying guilty program options testing program (duration=53.520706912s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash testing program (duration=53.520706912s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-renameat2-syz_open_dev$ndb-ioctl$NBD_SET_SIZE_BLOCKS-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc)) timer_settime(0x0, 0x0, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) renameat2(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0) r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0xb) r2 = syz_open_dev$ndb(&(0x7f00000001c0), 0x0, 0x103001) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r2, 0xab00, r3) ioctl$NBD_DO_IT(r2, 0xab03) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) program did not crash reproducing took 32m52.15057759s repro crashed as (corrupted=false): ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 0 PID: 226 at lib/refcount.c:28 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 Modules linked in: CPU: 0 PID: 226 Comm: kworker/0:1H Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: kblockd blk_mq_run_work_fn pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 lr : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 sp : ffff80001f0b7590 x29: ffff80001f0b7590 x28: fffffbffeffd1d00 x27: 1fffe0001987c703 x26: 1fffe0001987c703 x25: 0000000000000000 x24: 0000000000000001 x23: dfff800000000000 x22: fffffbffeffd1dc8 x21: 0000000000000003 x20: ffff0000cc3e38e8 x19: ffff800016f0c000 x18: 0000000000000001 x17: 0000000000000000 x16: ffff800011ac23e0 x15: 00000000ffffffff x14: ffff0000c6820000 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : a7861871209f4200 x8 : a7861871209f4200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f0b6cf8 x4 : ffff800014b9fae0 x3 : ffff800008557c4c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 __refcount_sub_and_test include/linux/refcount.h:283 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] blk_mq_free_request+0x440/0x584 block/blk-mq.c:543 __blk_mq_end_request+0x318/0x350 block/blk-mq.c:568 blk_mq_end_request block/blk-mq.c:577 [inline] blk_mq_dispatch_rq_list+0x9c8/0x14ac block/blk-mq.c:1408 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline] blk_mq_do_dispatch_sched+0x8b4/0x9f4 block/blk-mq-sched.c:214 __blk_mq_sched_dispatch_requests+0x310/0x420 blk_mq_sched_dispatch_requests+0xbc/0x138 block/blk-mq-sched.c:366 __blk_mq_run_hw_queue block/blk-mq.c:1511 [inline] blk_mq_run_work_fn+0x150/0x208 block/blk-mq.c:1842 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 56040 hardirqs last enabled at (56039): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (56040): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (56010): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (56010): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (55541): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (55541): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (55541): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (55541): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 501afd60825cd4fd ]--- blk_update_request: I/O error, dev nbd3, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev nbd3, logical block 0, async page read final repro crashed as (corrupted=false): ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 0 PID: 226 at lib/refcount.c:28 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 Modules linked in: CPU: 0 PID: 226 Comm: kworker/0:1H Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: kblockd blk_mq_run_work_fn pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 lr : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 sp : ffff80001f0b7590 x29: ffff80001f0b7590 x28: fffffbffeffd1d00 x27: 1fffe0001987c703 x26: 1fffe0001987c703 x25: 0000000000000000 x24: 0000000000000001 x23: dfff800000000000 x22: fffffbffeffd1dc8 x21: 0000000000000003 x20: ffff0000cc3e38e8 x19: ffff800016f0c000 x18: 0000000000000001 x17: 0000000000000000 x16: ffff800011ac23e0 x15: 00000000ffffffff x14: ffff0000c6820000 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : a7861871209f4200 x8 : a7861871209f4200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f0b6cf8 x4 : ffff800014b9fae0 x3 : ffff800008557c4c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 __refcount_sub_and_test include/linux/refcount.h:283 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] blk_mq_free_request+0x440/0x584 block/blk-mq.c:543 __blk_mq_end_request+0x318/0x350 block/blk-mq.c:568 blk_mq_end_request block/blk-mq.c:577 [inline] blk_mq_dispatch_rq_list+0x9c8/0x14ac block/blk-mq.c:1408 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline] blk_mq_do_dispatch_sched+0x8b4/0x9f4 block/blk-mq-sched.c:214 __blk_mq_sched_dispatch_requests+0x310/0x420 blk_mq_sched_dispatch_requests+0xbc/0x138 block/blk-mq-sched.c:366 __blk_mq_run_hw_queue block/blk-mq.c:1511 [inline] blk_mq_run_work_fn+0x150/0x208 block/blk-mq.c:1842 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 56040 hardirqs last enabled at (56039): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (56040): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (56010): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (56010): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (55541): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (55541): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (55541): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (55541): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 501afd60825cd4fd ]--- blk_update_request: I/O error, dev nbd3, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev nbd3, logical block 0, async page read