Extracting prog: 14m27.042085805s Minimizing prog: 1h34m39.524342646s Simplifying prog options: 0s Extracting C: 9m21.249121072s Simplifying C: 1h0m28.350275986s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 45s testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false 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-syz_usb_connect detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) syz_usb_connect(0x0, 0x5a, &(0x7f00000000c0)=ANY=[], 0x0) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 16m0s testing program (duration=16m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false 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-syz_usb_connect detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) syz_usb_connect(0x0, 0x5a, &(0x7f00000000c0)=ANY=[], 0x0) program crashed: INFO: task hung in _vm_unmap_aliases single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false 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 detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program crashed: INFO: task hung in _vm_unmap_aliases testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) program crashed: INFO: task hung in _vm_unmap_aliases testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) program did not crash testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, 0x0, &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x94) program did not crash testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x94) program did not crash testing program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x94) program did not crash extracting C reproducer testing compiled C program (duration=16m35.596706148s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases simplifying C reproducer testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing compiled C program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD program crashed: INFO: task hung in _vm_unmap_aliases testing program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) program crashed: INFO: task hung in _vm_unmap_aliases validation run: crashed=true testing program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) program crashed: INFO: task hung in _vm_unmap_aliases validation run: crashed=true testing program (duration=16m35.596706148s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2}, 0x80) program crashed: INFO: task hung in _vm_unmap_aliases validation run: crashed=true reproducing took 3h38m56.446702959s repro crashed as (corrupted=false): INFO: task kworker/1:261:4945 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:261 state:D stack:0 pid:4945 tgid:4945 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:eab01d84 r9:829174e8 r8:60000013 r7:829174e8 r6:eab01d8c r5:85d40000 r4:85d40000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:85d40000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eab01e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24dc0 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d40000 r7:00000000 r6:83018600 r5:00001000 r4:7f079000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab93000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3ff94 r4:85c1b000 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3ff94 r4:85c1b000 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d40000 r8:85c1b02c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c1b000 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c1b000 r8:802762fc r7:eaaf5e60 r6:85c18f80 r5:85d40000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab01fb0 to 0xeab01ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24a40 INFO: task kworker/1:261:4945 is blocked on a mutex likely owned by task kworker/1:262:4947. task:kworker/1:262 state:R running task stack:0 pid:4947 tgid:4947 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d49800 r8:80200c04 r7:eab4dd54 r6:ffffffff r5:85d49800 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab4dd20 to 0xeab4dd68) dd20: cfda3000 ebf91000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 dd40: 7f03f000 ebf91000 8280ca38 eab4dd9c eab4dda0 eab4dd70 8022fe10 80239030 dd60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab4ddc0 r5:eab4de08 r4:eab4ddc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d49800 r7:00000000 r6:83018600 r5:00001000 r4:7f075000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab4f000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3f794 r4:85c2a080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3f794 r4:85c2a080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d49800 r8:85c2a0ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a080 r8:802762fc r7:eab01e60 r6:85c2a100 r5:85d49800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab4dfb0 to 0xeab4dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 INFO: task kworker/1:263:4948 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:263 state:D stack:0 pid:4948 tgid:4948 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:eaa81d84 r9:829174e8 r8:60000013 r7:829174e8 r6:eaa81d8c r5:856a0000 r4:856a0000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a0000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaa81e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84dd4d00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:856a0000 r7:00000000 r6:83018600 r5:00001000 r4:7f077000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab73000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3fb94 r4:85c2a200 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3fb94 r4:85c2a200 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a0000 r8:85c2a22c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a200 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a200 r8:802762fc r7:eab4de60 r6:85733300 r5:856a0000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaa81fb0 to 0xeaa81ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 INFO: task kworker/1:263:4948 is blocked on a mutex likely owned by task kworker/1:262:4947. task:kworker/1:262 state:R running task stack:0 pid:4947 tgid:4947 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d49800 r8:80200c04 r7:eab4dd54 r6:ffffffff r5:85d49800 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab4dd20 to 0xeab4dd68) dd20: d13fc000 ebf91000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 dd40: 7f03f000 ebf91000 8280ca38 eab4dd9c eab4dda0 eab4dd70 8022fe10 80239030 dd60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab4ddc0 r5:eab4de08 r4:eab4ddc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d49800 r7:00000000 r6:83018600 r5:00001000 r4:7f075000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab4f000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3f794 r4:85c2a080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3f794 r4:85c2a080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d49800 r8:85c2a0ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a080 r8:802762fc r7:eab01e60 r6:85c2a100 r5:85d49800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab4dfb0 to 0xeab4dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00070013 r5:60070093 r4:82295830 [<80201b58>] (show_stack) from [<8021ee34>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021ee34>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021edc4>] (dump_stack_lvl) from [<8021ee58>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021ee40>] (dump_stack) from [<81a9b8e0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b780>] (nmi_cpu_backtrace) from [<81a9ba2c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c710 r5:8281af5c r4:ffffffff [<81a9b8fc>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007b93 r8:8280c890 r7:0001e80e r6:00007b93 r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa34d4>] (sys_info) from [<80383780>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa34d4>] (sys_info) from [<80383780>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:861def0c [<8038331c>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8038331c r7:832a3980 r6:832a3980 r5:832e3000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:833d6740 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2816 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603 pc : [<81abca50>] lr : [<80aa3928>] psr: 60000113 sp : eb35deb0 ip : eb35dec0 fp : eb35debc r10: 82959c04 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 82959b68 r5 : 00000000 r4 : 00000001 r3 : 0000066d r2 : 00000000 r1 : 60000113 r0 : 845b7440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d0a180 DAC: 00000000 Call trace: [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa3908>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149) [<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255) r6:82abf0fc r5:82959b68 r4:846bec00 [<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:82959b68 r8:802e5798 r7:84b26780 r6:84b26780 r5:846bec00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb35dfb0 to 0xeb35dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:830a0200 INFO: task kworker/1:17:4101 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:17 state:D stack:0 pid:4101 tgid:4101 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:df9c1d84 r9:829174e8 r8:60000113 r7:829174e8 r6:df9c1d8c r5:846b1800 r4:846b1800 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:846b1800 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:df9c1e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c2fb00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:846b1800 r7:00000000 r6:83018600 r5:00001000 r4:7f049000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfc2b000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d21394 r4:84d70680 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d21394 r4:84d70680 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:846b1800 r8:84d706ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:84d70680 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d70680 r8:802762fc r7:e03a5e60 r6:84d70f00 r5:846b1800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9c1fb0 to 0xdf9c1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:855013c0 INFO: task kworker/1:17:4101 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:18:4112 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:18 state:D stack:0 pid:4112 tgid:4112 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfb35d84 r9:829174e8 r8:60000113 r7:829174e8 r6:dfb35d8c r5:857e0c00 r4:857e0c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:857e0c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb35e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1eb80 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:857e0c00 r7:00000000 r6:83018400 r5:00001000 r4:7f05f000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea6e3000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856f5b94 r4:85505f80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:856f5b94 r4:85505f80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:857e0c00 r8:85505fac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85505f80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85505f80 r8:802762fc r7:dfb0de60 r6:85505d00 r5:857e0c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb35fb0 to 0xdfb35ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:852e1840 INFO: task kworker/0:18:4112 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:21:4121 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:21 state:D stack:0 pid:4121 tgid:4121 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfde5d84 r9:829174e8 r8:60000013 r7:829174e8 r6:dfde5d8c r5:833a6000 r4:833a6000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:833a6000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfde5e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1fc40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:833a6000 r7:00000000 r6:83018400 r5:00001000 r4:7f03d000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:df9eb000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3c794 r4:84d16080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85d3c794 r4:84d16080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:833a6000 r8:84d160ac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:84d16080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d16080 r8:802762fc r7:dfab5e60 r6:84d44600 r5:833a6000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfde5fb0 to 0xdfde5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85513740 INFO: task kworker/0:21:4121 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:22:4123 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:22 state:D stack:0 pid:4123 tgid:4123 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfde9d84 r9:829174e8 r8:60000013 r7:829174e8 r6:dfde9d8c r5:832e4800 r4:832e4800 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:832e4800 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfde9e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c13a00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:832e4800 r7:00000000 r6:83018400 r5:00001000 r4:7f059000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:e0315000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3db94 r4:84d16400 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85d3db94 r4:84d16400 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:832e4800 r8:84d1642c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:84d16400 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d16400 r8:802762fc r7:dfde5e60 r6:84d44700 r5:832e4800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfde9fb0 to 0xdfde9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:855137c0 INFO: task kworker/0:22:4123 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:165:4894 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:165 state:D stack:0 pid:4894 tgid:4894 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea99dd84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea99dd8c r5:856a5400 r4:856a5400 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a5400 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea99de08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1f500 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a5400 r7:00000000 r6:83018400 r5:00001000 r4:7f067000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eaa61000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c9b794 r4:85c20d80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c9b794 r4:85c20d80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a5400 r8:85c20dac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20d80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20d80 r8:802762fc r7:ea8d9e60 r6:85c20e00 r5:856a5400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea99dfb0 to 0xea99dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c0c000 INFO: task kworker/0:165:4894 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:166:4902 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:166 state:D stack:0 pid:4902 tgid:4902 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9ddd84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea9ddd8c r5:856a6c00 r4:856a6c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a6c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9dde08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1fa40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a6c00 r7:00000000 r6:83018400 r5:00001000 r4:7f049000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfc15000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c99b94 r4:85c20b80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c99b94 r4:85c20b80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a6c00 r8:85c20bac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20b80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20b80 r8:802762fc r7:ea9b5e60 r6:85c20a80 r5:856a6c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9ddfb0 to 0xea9ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c0cd80 INFO: task kworker/0:166:4902 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:167:4918 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:167 state:D stack:0 pid:4918 tgid:4918 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9edd84 r9:829174e8 r8:60000013 r7:829174e8 r6:ea9edd8c r5:856a3c00 r4:856a3c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a3c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9ede08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1f700 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a3c00 r7:00000000 r6:83018400 r5:00001000 r4:7f069000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eaab5000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c9af94 r4:85c20480 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c9af94 r4:85c20480 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a3c00 r8:85c204ac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20480 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20480 r8:802762fc r7:ea99de60 r6:85c20780 r5:856a3c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9edfb0 to 0xea9edff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c1d800 INFO: task kworker/0:167:4918 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/1:265:4953 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:265 state:D stack:0 pid:4953 tgid:4953 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9f5d84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea9f5d8c r5:856c0000 r4:856c0000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856c0000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9f5e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c0c980 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:856c0000 r7:00000000 r6:83018600 r5:00001000 r4:7f059000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:e02f1000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856f6794 r4:85c2a400 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856f6794 r4:85c2a400 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856c0000 r8:85c2a42c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a400 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a400 r8:802762fc r7:eaaf9e60 r6:85733600 r5:856c0000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9f5fb0 to 0xea9f5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c09980 INFO: task kworker/1:265:4953 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:82295830 [<80201b58>] (show_stack) from [<8021ee34>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021ee34>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021edc4>] (dump_stack_lvl) from [<8021ee58>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021ee40>] (dump_stack) from [<81a9b8e0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b780>] (nmi_cpu_backtrace) from [<81a9ba2c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c710 r5:8281af5c r4:ffffffff [<81a9b8fc>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007b6d r8:8280c890 r7:0001f00e r6:00007b6d r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa34d4>] (sys_info) from [<80383780>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa34d4>] (sys_info) from [<80383780>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:861ebf0c [<8038331c>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8038331c r7:832a3980 r6:832a3980 r5:832e3000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:833d6740 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2816 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603 pc : [<81abca50>] lr : [<80aa3928>] psr: 60000113 sp : eb35deb0 ip : eb35dec0 fp : eb35debc r10: 82959c04 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 82959b68 r5 : 00000000 r4 : 00000001 r3 : 0000088b r2 : 00000000 r1 : 60000113 r0 : 845b7440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d0a180 DAC: 00000000 Call trace: [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa3908>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149) [<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255) r6:82abf0fc r5:82959b68 r4:846bec00 [<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:82959b68 r8:802e5798 r7:84b26780 r6:84b26780 r5:846bec00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb35dfb0 to 0xeb35dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:830a0200 final repro crashed as (corrupted=false): INFO: task kworker/1:261:4945 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:261 state:D stack:0 pid:4945 tgid:4945 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:eab01d84 r9:829174e8 r8:60000013 r7:829174e8 r6:eab01d8c r5:85d40000 r4:85d40000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:85d40000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eab01e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24dc0 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d40000 r7:00000000 r6:83018600 r5:00001000 r4:7f079000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab93000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3ff94 r4:85c1b000 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3ff94 r4:85c1b000 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d40000 r8:85c1b02c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c1b000 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c1b000 r8:802762fc r7:eaaf5e60 r6:85c18f80 r5:85d40000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab01fb0 to 0xeab01ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24a40 INFO: task kworker/1:261:4945 is blocked on a mutex likely owned by task kworker/1:262:4947. task:kworker/1:262 state:R running task stack:0 pid:4947 tgid:4947 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d49800 r8:80200c04 r7:eab4dd54 r6:ffffffff r5:85d49800 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab4dd20 to 0xeab4dd68) dd20: cfda3000 ebf91000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 dd40: 7f03f000 ebf91000 8280ca38 eab4dd9c eab4dda0 eab4dd70 8022fe10 80239030 dd60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab4ddc0 r5:eab4de08 r4:eab4ddc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d49800 r7:00000000 r6:83018600 r5:00001000 r4:7f075000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab4f000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3f794 r4:85c2a080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3f794 r4:85c2a080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d49800 r8:85c2a0ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a080 r8:802762fc r7:eab01e60 r6:85c2a100 r5:85d49800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab4dfb0 to 0xeab4dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 INFO: task kworker/1:263:4948 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:263 state:D stack:0 pid:4948 tgid:4948 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:eaa81d84 r9:829174e8 r8:60000013 r7:829174e8 r6:eaa81d8c r5:856a0000 r4:856a0000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a0000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:eaa81e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:84dd4d00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:856a0000 r7:00000000 r6:83018600 r5:00001000 r4:7f077000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab73000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3fb94 r4:85c2a200 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3fb94 r4:85c2a200 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a0000 r8:85c2a22c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a200 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a200 r8:802762fc r7:eab4de60 r6:85733300 r5:856a0000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaa81fb0 to 0xeaa81ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 INFO: task kworker/1:263:4948 is blocked on a mutex likely owned by task kworker/1:262:4947. task:kworker/1:262 state:R running task stack:0 pid:4947 tgid:4947 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d49800 r8:80200c04 r7:eab4dd54 r6:ffffffff r5:85d49800 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeab4dd20 to 0xeab4dd68) dd20: d13fc000 ebf91000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 dd40: 7f03f000 ebf91000 8280ca38 eab4dd9c eab4dda0 eab4dd70 8022fe10 80239030 dd60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eab4ddc0 r5:eab4de08 r4:eab4ddc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c24f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d49800 r7:00000000 r6:83018600 r5:00001000 r4:7f075000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eab4f000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3f794 r4:85c2a080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d3f794 r4:85c2a080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d49800 r8:85c2a0ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a080 r8:802762fc r7:eab01e60 r6:85c2a100 r5:85d49800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeab4dfb0 to 0xeab4dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24c80 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00070013 r5:60070093 r4:82295830 [<80201b58>] (show_stack) from [<8021ee34>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021ee34>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021edc4>] (dump_stack_lvl) from [<8021ee58>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021ee40>] (dump_stack) from [<81a9b8e0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b780>] (nmi_cpu_backtrace) from [<81a9ba2c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c710 r5:8281af5c r4:ffffffff [<81a9b8fc>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007b93 r8:8280c890 r7:0001e80e r6:00007b93 r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa34d4>] (sys_info) from [<80383780>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa34d4>] (sys_info) from [<80383780>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:861def0c [<8038331c>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8038331c r7:832a3980 r6:832a3980 r5:832e3000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:833d6740 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2816 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603 pc : [<81abca50>] lr : [<80aa3928>] psr: 60000113 sp : eb35deb0 ip : eb35dec0 fp : eb35debc r10: 82959c04 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 82959b68 r5 : 00000000 r4 : 00000001 r3 : 0000066d r2 : 00000000 r1 : 60000113 r0 : 845b7440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d0a180 DAC: 00000000 Call trace: [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa3908>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149) [<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255) r6:82abf0fc r5:82959b68 r4:846bec00 [<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:82959b68 r8:802e5798 r7:84b26780 r6:84b26780 r5:846bec00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb35dfb0 to 0xeb35dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:830a0200 INFO: task kworker/1:17:4101 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:17 state:D stack:0 pid:4101 tgid:4101 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:df9c1d84 r9:829174e8 r8:60000113 r7:829174e8 r6:df9c1d8c r5:846b1800 r4:846b1800 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:846b1800 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:df9c1e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c2fb00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:846b1800 r7:00000000 r6:83018600 r5:00001000 r4:7f049000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfc2b000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d21394 r4:84d70680 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:85d21394 r4:84d70680 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:846b1800 r8:84d706ac r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:84d70680 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d70680 r8:802762fc r7:e03a5e60 r6:84d70f00 r5:846b1800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9c1fb0 to 0xdf9c1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:855013c0 INFO: task kworker/1:17:4101 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:18:4112 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:18 state:D stack:0 pid:4112 tgid:4112 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfb35d84 r9:829174e8 r8:60000113 r7:829174e8 r6:dfb35d8c r5:857e0c00 r4:857e0c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:857e0c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfb35e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1eb80 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:857e0c00 r7:00000000 r6:83018400 r5:00001000 r4:7f05f000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:ea6e3000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856f5b94 r4:85505f80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:856f5b94 r4:85505f80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:857e0c00 r8:85505fac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85505f80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85505f80 r8:802762fc r7:dfb0de60 r6:85505d00 r5:857e0c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfb35fb0 to 0xdfb35ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:852e1840 INFO: task kworker/0:18:4112 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:21:4121 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:21 state:D stack:0 pid:4121 tgid:4121 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfde5d84 r9:829174e8 r8:60000013 r7:829174e8 r6:dfde5d8c r5:833a6000 r4:833a6000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:833a6000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfde5e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1fc40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:833a6000 r7:00000000 r6:83018400 r5:00001000 r4:7f03d000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:df9eb000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3c794 r4:84d16080 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85d3c794 r4:84d16080 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:833a6000 r8:84d160ac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:84d16080 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d16080 r8:802762fc r7:dfab5e60 r6:84d44600 r5:833a6000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfde5fb0 to 0xdfde5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85513740 INFO: task kworker/0:21:4121 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:22:4123 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:22 state:D stack:0 pid:4123 tgid:4123 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:dfde9d84 r9:829174e8 r8:60000013 r7:829174e8 r6:dfde9d8c r5:832e4800 r4:832e4800 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:832e4800 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfde9e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c13a00 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:832e4800 r7:00000000 r6:83018400 r5:00001000 r4:7f059000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:e0315000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85d3db94 r4:84d16400 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85d3db94 r4:84d16400 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:832e4800 r8:84d1642c r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:84d16400 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:84d16400 r8:802762fc r7:dfde5e60 r6:84d44700 r5:832e4800 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfde9fb0 to 0xdfde9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:855137c0 INFO: task kworker/0:22:4123 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:165:4894 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:165 state:D stack:0 pid:4894 tgid:4894 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea99dd84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea99dd8c r5:856a5400 r4:856a5400 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a5400 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea99de08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1f500 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a5400 r7:00000000 r6:83018400 r5:00001000 r4:7f067000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eaa61000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c9b794 r4:85c20d80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c9b794 r4:85c20d80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a5400 r8:85c20dac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20d80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20d80 r8:802762fc r7:ea8d9e60 r6:85c20e00 r5:856a5400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea99dfb0 to 0xea99dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c0c000 INFO: task kworker/0:165:4894 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:166:4902 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:166 state:D stack:0 pid:4902 tgid:4902 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9ddd84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea9ddd8c r5:856a6c00 r4:856a6c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a6c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9dde08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1fa40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a6c00 r7:00000000 r6:83018400 r5:00001000 r4:7f049000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfc15000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c99b94 r4:85c20b80 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c99b94 r4:85c20b80 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a6c00 r8:85c20bac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20b80 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20b80 r8:802762fc r7:ea9b5e60 r6:85c20a80 r5:856a6c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9ddfb0 to 0xea9ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c0cd80 INFO: task kworker/0:166:4902 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/0:167:4918 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:167 state:D stack:0 pid:4918 tgid:4918 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9edd84 r9:829174e8 r8:60000013 r7:829174e8 r6:ea9edd8c r5:856a3c00 r4:856a3c00 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856a3c00 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9ede08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c1f700 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018405 r8:856a3c00 r7:00000000 r6:83018400 r5:00001000 r4:7f069000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:eaab5000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:85c9af94 r4:85c20480 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:dddcfb40 r6:83018400 r5:85c9af94 r4:85c20480 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856a3c00 r8:85c204ac r7:82804d80 r6:dddcfb40 r5:dddcfb60 r4:85c20480 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c20480 r8:802762fc r7:ea99de60 r6:85c20780 r5:856a3c00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9edfb0 to 0xea9edff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c1d800 INFO: task kworker/0:167:4918 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 INFO: task kworker/1:265:4953 blocked for more than 430 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:265 state:D stack:0 pid:4953 tgid:4953 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab30a8>] (__schedule_loop kernel/sched/core.c:6945 [inline]) [<81ab1dfc>] (__schedule) from [<81ab30a8>] (schedule+0x2c/0x130 kernel/sched/core.c:6960) r10:ea9f5d84 r9:829174e8 r8:60000113 r7:829174e8 r6:ea9f5d8c r5:856c0000 r4:856c0000 [<81ab307c>] (schedule) from [<81ab3230>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:7017) r5:856c0000 r4:829174e4 [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock_common kernel/locking/mutex.c:692 [inline]) [<81ab3218>] (schedule_preempt_disabled) from [<81ab68b4>] (__mutex_lock.constprop.0+0x658/0xf8c kernel/locking/mutex.c:776) [<81ab625c>] (__mutex_lock.constprop.0) from [<81ab72bc>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1065) r10:8280c9e4 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ea9f5e08 r4:00000000 [<81ab72a8>] (__mutex_lock_slowpath) from [<81ab72fc>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:290) [<81ab72c0>] (mutex_lock) from [<804f4368>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2944) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85c0c980 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:856c0000 r7:00000000 r6:83018600 r5:00001000 r4:7f059000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:e02f1000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856f6794 r4:85c2a400 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856f6794 r4:85c2a400 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:856c0000 r8:85c2a42c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a400 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a400 r8:802762fc r7:eaaf9e60 r6:85733600 r5:856c0000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xea9f5fb0 to 0xea9f5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c09980 INFO: task kworker/1:265:4953 is blocked on a mutex likely owned by task kworker/1:264:4951. task:kworker/1:264 state:R running task stack:0 pid:4951 tgid:4951 ppid:2 task_flags:0x4208060 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<81ab1dfc>] (__schedule) from [<81ab34dc>] (preempt_schedule_irq+0x40/0xa8 kernel/sched/core.c:7190) r10:8280ca38 r9:85d42400 r8:80200c04 r7:eaaf9d54 r6:ffffffff r5:85d42400 r4:00000000 [<81ab349c>] (preempt_schedule_irq) from [<80200c24>] (svc_preempt+0x8/0x18) Exception stack(0xeaaf9d20 to 0xeaaf9d68) 9d20: e5fe0000 ec093000 00000001 80239018 7f03f000 00000001 82ace204 82acd5e0 9d40: 7f03f000 ec093000 8280ca38 eaaf9d9c eaaf9da0 eaaf9d70 8022fe10 80239030 9d60: 80000013 ffffffff r5:80000013 r4:80239030 [<8022fdac>] (flush_tlb_kernel_range) from [<804f412c>] (__purge_vmap_area_lazy+0x284/0x458 mm/vmalloc.c:2369) r4:82ace224 [<804f3ea8>] (__purge_vmap_area_lazy) from [<804f44e4>] (_vm_unmap_aliases+0x1e4/0x240 mm/vmalloc.c:2983) r10:00000000 r9:00000000 r8:00000000 r7:ffffffff r6:eaaf9dc0 r5:eaaf9e08 r4:eaaf9dc0 [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vm_reset_perms mm/vmalloc.c:3375 [inline]) [<804f4300>] (_vm_unmap_aliases) from [<804f8150>] (vfree+0x16c/0x210 mm/vmalloc.c:3454) r10:83016170 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:85291f40 r4:00000000 [<804f7fe4>] (vfree) from [<80563f5c>] (execmem_free+0x30/0x50 mm/execmem.c:503) r9:83018605 r8:85d42400 r7:00000000 r6:83018600 r5:00001000 r4:7f055000 [<80563f2c>] (execmem_free) from [<803cb24c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1068) r5:00001000 r4:dfacd000 [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_binary_free kernel/bpf/core.c:1114 [inline]) [<803cb23c>] (bpf_jit_free_exec) from [<803cb62c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1237) [<803cb5c4>] (bpf_jit_free) from [<803cc754>] (bpf_prog_free_deferred+0x140/0x158 kernel/bpf/core.c:2935) r5:856ee794 r4:85c2a300 [<803cc614>] (bpf_prog_free_deferred) from [<80275db8>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3257) r7:ddde3b40 r6:83018600 r5:856ee794 r4:85c2a300 [<80275c04>] (process_one_work) from [<802764f8>] (process_scheduled_works kernel/workqueue.c:3340 [inline]) [<80275c04>] (process_one_work) from [<802764f8>] (worker_thread+0x1fc/0x3d8 kernel/workqueue.c:3421) r10:61c88647 r9:85d42400 r8:85c2a32c r7:82804d80 r6:ddde3b40 r5:ddde3b60 r4:85c2a300 [<802762fc>] (worker_thread) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:85c2a300 r8:802762fc r7:eaaf5e60 r6:85733480 r5:85d42400 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeaaf9fb0 to 0xeaaf9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:85c24580 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a74>] (dump_backtrace) from [<80201b70>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:82295830 [<80201b58>] (show_stack) from [<8021ee34>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b58>] (show_stack) from [<8021ee34>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120) [<8021edc4>] (dump_stack_lvl) from [<8021ee58>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:00000001 [<8021ee40>] (dump_stack) from [<81a9b8e0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81a9b780>] (nmi_cpu_backtrace) from [<81a9ba2c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8280c710 r5:8281af5c r4:ffffffff [<81a9b8fc>] (nmi_trigger_cpumask_backtrace) from [<8022f818>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852) r9:00007b6d r8:8280c890 r7:0001f00e r6:00007b6d r5:82ac27e4 r4:00000048 [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (__sys_info lib/sys_info.c:157 [inline]) [<8022f800>] (arch_trigger_cpumask_backtrace) from [<81aa353c>] (sys_info+0x68/0xa8 lib/sys_info.c:165) [<81aa34d4>] (sys_info) from [<80383780>] (check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]) [<81aa34d4>] (sys_info) from [<80383780>] (watchdog+0x464/0x8a0 kernel/hung_task.c:515) r5:82ac27e4 r4:861ebf0c [<8038331c>] (watchdog) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:00000000 r8:8038331c r7:832a3980 r6:832a3980 r5:832e3000 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:833d6740 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2816 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603 pc : [<81abca50>] lr : [<80aa3928>] psr: 60000113 sp : eb35deb0 ip : eb35dec0 fp : eb35debc r10: 82959c04 r9 : 00000001 r8 : 00000000 r7 : 00000117 r6 : 82959b68 r5 : 00000000 r4 : 00000001 r3 : 0000088b r2 : 00000000 r1 : 60000113 r0 : 845b7440 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84d0a180 DAC: 00000000 Call trace: [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]) [<81abca28>] (_raw_spin_unlock_irqrestore) from [<80aa3928>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603) [<80aa3908>] (pl011_console_device_unlock) from [<802e5720>] (nbcon_emit_one+0x88/0x100 kernel/printk/nbcon.c:1149) [<802e5698>] (nbcon_emit_one) from [<802e59a0>] (nbcon_kthread_func+0x208/0x2e4 kernel/printk/nbcon.c:1255) r6:82abf0fc r5:82959b68 r4:846bec00 [<802e5798>] (nbcon_kthread_func) from [<8027f6fc>] (kthread+0x12c/0x280 kernel/kthread.c:463) r10:00000000 r9:82959b68 r8:802e5798 r7:84b26780 r6:84b26780 r5:846bec00 r4:00000001 [<8027f5d0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xeb35dfb0 to 0xeb35dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8027f5d0 r4:830a0200