INFO: task syz-executor.5:19690 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #100 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28384 19690 10993 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 exit_mm kernel/exit.c:513 [inline] do_exit+0x47b/0x2e50 kernel/exit.c:866 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:00007ffeec3bb118 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000459829 RDX: 0000000000413511 RSI: fffffffffffffff7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007ffeec3bb170 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffeec3bb170 R14: 0000000000000000 R15: 00007ffeec3bb180 INFO: task syz-executor.5:19693 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #100 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28200 19693 10993 0x80004000 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:00007feb53c75cf8 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: 00007ffeec3baf0f R14: 00007feb53c769c0 R15: 000000000075bf2c INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc4 #100 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: 19703 Comm: syz-executor.5 Not tainted 5.3.0-rc4 #100 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__mutex_trylock_or_owner kernel/locking/mutex.c:112 [inline] RIP: 0010:__mutex_trylock kernel/locking/mutex.c:126 [inline] RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:932 [inline] RIP: 0010:__mutex_lock+0x430/0x13c0 kernel/locking/mutex.c:1077 Code: 8b 35 14 68 4e 03 85 f6 0f 84 aa 00 00 00 48 83 e3 fd be 08 00 00 00 4c 89 f7 e8 db 87 6f fa 4c 09 eb 4c 89 f8 f0 49 0f b1 1e <49> 39 c7 74 1e 48 ba 00 00 00 00 00 fc ff df 49 89 c7 e9 5c fd ff RSP: 0018:ffff888090e7f900 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88809288a280 RCX: ffffffff873cd985 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88808c6cda30 RBP: ffff888090e7fa70 R08: 1ffff110118d9b46 R09: ffffed10118d9b47 R10: ffffed10118d9b46 R11: ffff88808c6cda37 R12: fffffbfff134b48e R13: ffff88809288a280 R14: ffff88808c6cda30 R15: 0000000000000000 FS: 00007feb53c55700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000088397000 CR4: 00000000001406e0 Call Trace: 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:00007feb53c54c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 000000000075bfc8 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000001011 R11: 0000000000000246 R12: 00007feb53c556d4 R13: 00000000004c5d71 R14: 00000000004da7c8 R15: 00000000ffffffff