Extracting prog: 5m45.768983495s Minimizing prog: 55m54.666731272s Simplifying prog options: 0s Extracting C: 1m21.876878391s Simplifying C: 53m36.232375236s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH-sendto$inet detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) sendto$inet(r0, 0x0, 0x0, 0x11, 0x0, 0x0) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH-sendto$inet detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) sendto$inet(r0, 0x0, 0x0, 0x11, 0x0, 0x0) program crashed: BUG: workqueue lockup single: successfully extracted reproducer found reproducer with 5 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program crashed: BUG: workqueue lockup testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) socket$nl_netfilter(0x10, 0x3, 0xc) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: socket$inet(0x2, 0x4000000000000001, 0x0) r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, 0x0, 0x0) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, 0x0}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={0x0, 0xcc}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB], 0xcc}}, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false 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}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: BUG: workqueue lockup testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program crashed: BUG: workqueue lockup validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program crashed: BUG: workqueue lockup validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-sendto$inet-socket$nl_netfilter-sendmsg$NFT_BATCH detailed listing: executing program 0: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) sendto$inet(r0, 0x0, 0x0, 0x240007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000200)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a010300000000000000000100fffd0900010073797a300000000040000000030a01020000000000000000010000000900030073797a3200000000140004800800024032658aeb08000140000000010900010073797a300000000044000000060a010400000000000001040100000008000b40000000000900010073797a30000000001c000480180001800d00010073796e70726f7879000000000400028014000000110001"], 0xcc}}, 0x0) program crashed: BUG: workqueue lockup validation run: crashed=true reproducing took 2h0m41.036829552s repro crashed as (corrupted=false): BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 38s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=24 refcnt=25 in-flight: 6582:nsim_fib_event_work nsim_fib_event_work ,6672:nsim_fib_event_work nsim_fib_event_work ,6627:nsim_fib_event_work ,2362:request_firmware_work_func pending: 3*nsim_dev_hwstats_traffic_work, 2*psi_avgs_work, free_obj_work, psi_avgs_work, 2*ovs_dp_masks_rebalance, rht_deferred_worker, vmstat_shepherd, l2cap_info_timeout, 4*ovs_dp_masks_rebalance, nsim_fib_event_work, rht_deferred_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=5 refcnt=6 in-flight: 1858:nsim_fib_event_work nsim_fib_event_work pending: nsim_dev_hwstats_traffic_work, 2*psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=9 refcnt=10 pending: 9*defense_work_handler pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=2 refcnt=3 pending: 2*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 5232:cfg80211_wiphy_work pending: cfg80211_wiphy_work, crng_reseed, cfg80211_wiphy_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 in-flight: 12:cfg80211_wiphy_work ,42:cfg80211_wiphy_work cfg80211_wiphy_work ,252:cfg80211_wiphy_work ,15:cfg80211_wiphy_work cfg80211_wiphy_work pending: cfg80211_wiphy_work, flush_memcg_stats_dwork, cfg80211_wiphy_work, toggle_allocation_gate workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=12 refcnt=13 in-flight: 752:fsnotify_connector_destroy_workfn ,41:fsnotify_mark_destroy_workfn pending: nsim_dev_trap_report_work, macvlan_process_broadcast, nsim_dev_trap_report_work, 3*macvlan_process_broadcast, nsim_dev_trap_report_work, 2*macvlan_process_broadcast, nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: fb_flashcursor, wg_ratelimiter_gc_entries, neigh_managed_work, 2*neigh_periodic_work, gc_worker pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: do_cache_clean, neigh_managed_work workqueue rcu_gp: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: srcu_invoke_callbacks workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=4 MAYDAY pending: 2*kfree_rcu_monitor workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 824:cleanup_net workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: vmstat_update workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=71 in-flight: 9:mld_ifc_work inactive: 6*mld_ifc_work, mld_dad_work, 3*mld_ifc_work, 3*mld_dad_work, 8*mld_ifc_work, 2*mld_dad_work, 19*mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 3*mld_dad_work, 19*mld_ifc_work pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=94 in-flight: 6752:mld_ifc_work inactive: 7*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, 3*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 3*mld_dad_work, 3*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 2*mld_ifc_work, 2*mld_dad_work, 2*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 6*mld_ifc_work, 32*mld_dad_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=238 in-flight: 4233(RESCUER):addrconf_dad_work inactive: 233*addrconf_dad_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=50 in-flight: 4310(RESCUER):batadv_tt_purge inactive: 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_tt_purge, 3*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 6*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 9*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 6662:wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 26:wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=38s workers=8 idle: 6742 11 6753 pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=1s workers=5 manager: 24 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=9 manager: 6758 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 2: task:kworker/0:3 state:R running task stack:0 pid:6582 tgid:6582 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x6264/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:0 state:R running task stack:0 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: mld mld_ifc_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 ip6t_do_table+0x1040/0x1240 net/ipv6/netfilter/ip6_tables.c:375 ip6table_mangle_hook+0x204/0x584 net/ipv6/netfilter/ip6table_mangle.c:73 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_slow+0xb4/0x21c net/netfilter/core.c:623 nf_hook+0x1d0/0x334 include/linux/netfilter.h:273 NF_HOOK_COND include/linux/netfilter.h:306 [inline] ip6_output+0x294/0x640 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:464 [inline] NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318 mld_sendpack+0x7fc/0x100c net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x770/0xc38 net/ipv6/mcast.c:2693 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:5 state:R running task stack:0 pid:6672 tgid:6672 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:194 __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline] debug_check_no_obj_freed+0x454/0x470 lib/debugobjects.c:1129 free_pages_prepare mm/page_alloc.c:1401 [inline] __free_frozen_pages+0x4b8/0xcac mm/page_alloc.c:2906 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2944 __free_slab+0x108/0x1c0 mm/slub.c:3301 free_slab+0x24/0x120 mm/slub.c:3324 discard_slab mm/slub.c:3330 [inline] __put_partials+0x188/0x1f4 mm/slub.c:3876 put_cpu_partial+0x1d0/0x244 mm/slub.c:3951 __slab_free+0x198/0x240 mm/slub.c:5929 do_slab_free mm/slub.c:6582 [inline] ___cache_free+0x150/0x170 mm/slub.c:6708 qlink_free+0x48/0x94 mm/kasan/quarantine.c:163 qlist_free_all+0x44/0xb8 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x2c/0xb4 mm/kasan/common.c:408 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3a4/0x65c mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] nsim_fib6_rt_nh_add+0x64/0x218 drivers/net/netdevsim/fib.c:500 nsim_fib6_rt_create drivers/net/netdevsim/fib.c:562 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x1710/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:4 state:R running task stack:0 pid:6627 tgid:6627 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x6264/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:2 state:R running task stack:0 pid:2362 tgid:2362 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 irq_work_queue+0xd0/0xfc kernel/irq_work.c:125 nbcon_kthreads_wake+0xe4/0x19c kernel/printk/nbcon.c:1290 vprintk_emit+0x1a4/0x318 kernel/printk/printk.c:2405 vprintk_default+0x54/0x80 kernel/printk/printk.c:2438 vprintk+0x90/0x128 kernel/printk/printk_safe.c:82 _printk+0xd0/0x118 kernel/printk/printk.c:2448 regdb_fw_cb+0x188/0x1a0 net/wireless/reg.c:-1 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1161 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 final repro crashed as (corrupted=false): BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 38s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=24 refcnt=25 in-flight: 6582:nsim_fib_event_work nsim_fib_event_work ,6672:nsim_fib_event_work nsim_fib_event_work ,6627:nsim_fib_event_work ,2362:request_firmware_work_func pending: 3*nsim_dev_hwstats_traffic_work, 2*psi_avgs_work, free_obj_work, psi_avgs_work, 2*ovs_dp_masks_rebalance, rht_deferred_worker, vmstat_shepherd, l2cap_info_timeout, 4*ovs_dp_masks_rebalance, nsim_fib_event_work, rht_deferred_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=5 refcnt=6 in-flight: 1858:nsim_fib_event_work nsim_fib_event_work pending: nsim_dev_hwstats_traffic_work, 2*psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=9 refcnt=10 pending: 9*defense_work_handler pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=2 refcnt=3 pending: 2*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 5232:cfg80211_wiphy_work pending: cfg80211_wiphy_work, crng_reseed, cfg80211_wiphy_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 in-flight: 12:cfg80211_wiphy_work ,42:cfg80211_wiphy_work cfg80211_wiphy_work ,252:cfg80211_wiphy_work ,15:cfg80211_wiphy_work cfg80211_wiphy_work pending: cfg80211_wiphy_work, flush_memcg_stats_dwork, cfg80211_wiphy_work, toggle_allocation_gate workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=12 refcnt=13 in-flight: 752:fsnotify_connector_destroy_workfn ,41:fsnotify_mark_destroy_workfn pending: nsim_dev_trap_report_work, macvlan_process_broadcast, nsim_dev_trap_report_work, 3*macvlan_process_broadcast, nsim_dev_trap_report_work, 2*macvlan_process_broadcast, nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: fb_flashcursor, wg_ratelimiter_gc_entries, neigh_managed_work, 2*neigh_periodic_work, gc_worker pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: do_cache_clean, neigh_managed_work workqueue rcu_gp: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: srcu_invoke_callbacks workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=4 MAYDAY pending: 2*kfree_rcu_monitor workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 824:cleanup_net workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: vmstat_update workqueue mld: flags=0x40108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=71 in-flight: 9:mld_ifc_work inactive: 6*mld_ifc_work, mld_dad_work, 3*mld_ifc_work, 3*mld_dad_work, 8*mld_ifc_work, 2*mld_dad_work, 19*mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 3*mld_dad_work, 19*mld_ifc_work pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=94 in-flight: 6752:mld_ifc_work inactive: 7*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, 3*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, 3*mld_dad_work, 3*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 2*mld_ifc_work, 2*mld_dad_work, 2*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 6*mld_ifc_work, 32*mld_dad_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=238 in-flight: 4233(RESCUER):addrconf_dad_work inactive: 233*addrconf_dad_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=50 in-flight: 4310(RESCUER):batadv_tt_purge inactive: 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_tt_purge, 3*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 6*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 9*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 6662:wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 26:wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=38s workers=8 idle: 6742 11 6753 pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=1s workers=5 manager: 24 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=9 manager: 6758 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 2: task:kworker/0:3 state:R running task stack:0 pid:6582 tgid:6582 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x6264/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:0 state:R running task stack:0 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: mld mld_ifc_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 ip6t_do_table+0x1040/0x1240 net/ipv6/netfilter/ip6_tables.c:375 ip6table_mangle_hook+0x204/0x584 net/ipv6/netfilter/ip6table_mangle.c:73 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_slow+0xb4/0x21c net/netfilter/core.c:623 nf_hook+0x1d0/0x334 include/linux/netfilter.h:273 NF_HOOK_COND include/linux/netfilter.h:306 [inline] ip6_output+0x294/0x640 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:464 [inline] NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318 mld_sendpack+0x7fc/0x100c net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x770/0xc38 net/ipv6/mcast.c:2693 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:5 state:R running task stack:0 pid:6672 tgid:6672 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:194 __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline] debug_check_no_obj_freed+0x454/0x470 lib/debugobjects.c:1129 free_pages_prepare mm/page_alloc.c:1401 [inline] __free_frozen_pages+0x4b8/0xcac mm/page_alloc.c:2906 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2944 __free_slab+0x108/0x1c0 mm/slub.c:3301 free_slab+0x24/0x120 mm/slub.c:3324 discard_slab mm/slub.c:3330 [inline] __put_partials+0x188/0x1f4 mm/slub.c:3876 put_cpu_partial+0x1d0/0x244 mm/slub.c:3951 __slab_free+0x198/0x240 mm/slub.c:5929 do_slab_free mm/slub.c:6582 [inline] ___cache_free+0x150/0x170 mm/slub.c:6708 qlink_free+0x48/0x94 mm/kasan/quarantine.c:163 qlist_free_all+0x44/0xb8 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x2c/0xb4 mm/kasan/common.c:408 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3a4/0x65c mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] nsim_fib6_rt_nh_add+0x64/0x218 drivers/net/netdevsim/fib.c:500 nsim_fib6_rt_create drivers/net/netdevsim/fib.c:562 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x1710/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:4 state:R running task stack:0 pid:6627 tgid:6627 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event+0x6264/0x6fc0 drivers/net/netdevsim/fib.c:889 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x990/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:2 state:R running task stack:0 pid:2362 tgid:2362 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 irq_work_queue+0xd0/0xfc kernel/irq_work.c:125 nbcon_kthreads_wake+0xe4/0x19c kernel/printk/nbcon.c:1290 vprintk_emit+0x1a4/0x318 kernel/printk/printk.c:2405 vprintk_default+0x54/0x80 kernel/printk/printk.c:2438 vprintk+0x90/0x128 kernel/printk/printk_safe.c:82 _printk+0xd0/0x118 kernel/printk/printk.c:2448 regdb_fw_cb+0x188/0x1a0 net/wireless/reg.c:-1 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1161 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844