INFO: task syz-executor.0:9936 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #107 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27632 9936 9919 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090 __down_read kernel/locking/rwsem.c:1320 [inline] down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463 exit_mm kernel/exit.c:513 [inline] do_exit+0x47b/0x2e50 kernel/exit.c:866 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2729 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45987a Code: Bad RIP value. RSP: 002b:00007fff043a2f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045987a RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000 RBP: ffffffffffffffff R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000020022 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000021000 R14: 0000000000020022 R15: 0000000000000000 INFO: task syz-executor.0:9937 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #107 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28456 9937 9919 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090 __down_read kernel/locking/rwsem.c:1320 [inline] down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463 exit_mm kernel/exit.c:513 [inline] do_exit+0x47b/0x2e50 kernel/exit.c:866 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2729 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f64e4527cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075bf28 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007fff043a303f R14: 00007f64e45289c0 R15: 000000000075bf2c INFO: task syz-executor.0:9939 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #107 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28968 9939 9919 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090 __down_read kernel/locking/rwsem.c:1320 [inline] down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463 acct_collect+0xf3/0x850 kernel/acct.c:542 do_exit+0x1b56/0x2e50 kernel/exit.c:858 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2729 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f64e4506cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075bfd0 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bfd0 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bfd4 R13: 00007fff043a303f R14: 00007f64e45079c0 R15: 000000000075bfd4 INFO: task syz-executor.0:9940 blocked for more than 144 seconds. Not tainted 5.3.0-rc4 #107 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29472 9940 9939 0x80000000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090 __down_read kernel/locking/rwsem.c:1320 [inline] down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463 acct_collect+0xf3/0x850 kernel/acct.c:542 do_exit+0x1b56/0x2e50 kernel/exit.c:858 do_group_exit+0x135/0x360 kernel/exit.c:983 __do_sys_exit_group kernel/exit.c:994 [inline] __se_sys_exit_group kernel/exit.c:992 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:992 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f64e4506688 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000459829 RDX: 0000000000459829 RSI: 00007f64e45066c0 RDI: 000000000000000b RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f64e45076d4 R13: 00000000004bfce6 R14: 00000000004d1a38 R15: 00000000ffffffff INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc4 #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9938 Comm: syz-executor.0 Not tainted 5.3.0-rc4 #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_save_flags+0x0/0x50 arch/x86/include/asm/paravirt.h:762 Code: 24 41 5c 41 5d 5d c3 5b 31 c0 41 5c 41 5d 5d c3 4c 89 e7 e8 02 b9 5d 00 eb bf 48 89 df e8 98 b9 5d 00 eb d0 66 0f 1f 44 00 00 <48> c7 c0 08 f3 d2 88 55 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 RSP: 0018:ffff8880a782f880 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff134b48e RDX: 1ffff11012802c97 RSI: 000000000000038d RDI: ffff8880940164b8 RBP: ffff8880a782f8b0 R08: ffffffff818aca56 R09: ffffed1012005ca7 R10: ffff8880a782fa90 R11: ffff88809002e537 R12: ffffffff878bd4a0 R13: 000000000000038d R14: 0000000000000000 R15: ffff888094016140 FS: 00007f64e4528700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000a01d1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __might_sleep+0x95/0x190 kernel/sched/core.c:6558 __mutex_lock_common kernel/locking/mutex.c:909 [inline] __mutex_lock+0xc5/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 perf_mmap+0x736/0x19b0 kernel/events/core.c:5700 call_mmap include/linux/fs.h:1875 [inline] mmap_region+0xc35/0x1760 mm/mmap.c:1788 do_mmap+0x82e/0x1090 mm/mmap.c:1561 do_mmap_pgoff include/linux/mm.h:2374 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:391 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1611 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f64e4527c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 000000000075bf20 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 00007f64e45286d4 R13: 00000000004c5d1b R14: 00000000004da750 R15: 00000000ffffffff