INFO: task syz-executor.0:9648 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #73 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28624 9648 9627 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x877/0xc50 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x5c5/0xa00 kernel/locking/rwsem.c:1090 __down_read+0x6e/0x330 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 exit_mm+0x90/0x590 kernel/exit.c:513 do_exit+0x565/0x21a0 kernel/exit.c:866 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 get_signal+0x4ac/0x1d60 kernel/signal.c:2729 do_signal+0x37/0x640 arch/x86/kernel/signal.c:815 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline] prepare_exit_to_usermode+0x303/0x580 arch/x86/entry/common.c:194 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:274 do_syscall_64+0x126/0x140 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45987a Code: Bad RIP value. RSP: 002b:00007ffc3f0c90a8 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.0:9649 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #73 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28760 9649 9627 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x877/0xc50 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x5c5/0xa00 kernel/locking/rwsem.c:1090 __down_read+0x6e/0x330 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 exit_mm+0x90/0x590 kernel/exit.c:513 do_exit+0x565/0x21a0 kernel/exit.c:866 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 get_signal+0x4ac/0x1d60 kernel/signal.c:2729 do_signal+0x37/0x640 arch/x86/kernel/signal.c:815 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline] prepare_exit_to_usermode+0x303/0x580 arch/x86/entry/common.c:194 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:274 do_syscall_64+0x126/0x140 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f2b4b0b0cf8 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: 00007ffc3f0c914f R14: 00007f2b4b0b19c0 R15: 000000000075bf2c INFO: task syz-executor.0:9651 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #73 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28888 9651 9627 0x80004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x877/0xc50 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x5c5/0xa00 kernel/locking/rwsem.c:1090 __down_read+0x6e/0x330 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 acct_collect+0xa3/0x5f0 kernel/acct.c:542 do_exit+0x4fa/0x21a0 kernel/exit.c:858 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 get_signal+0x4ac/0x1d60 kernel/signal.c:2729 do_signal+0x37/0x640 arch/x86/kernel/signal.c:815 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline] prepare_exit_to_usermode+0x303/0x580 arch/x86/entry/common.c:194 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:274 do_syscall_64+0x126/0x140 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f2b4b08fcf8 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: 00007ffc3f0c914f R14: 00007f2b4b0909c0 R15: 000000000075bfd4 INFO: task syz-executor.0:9652 blocked for more than 143 seconds. Not tainted 5.3.0-rc4 #73 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D30200 9652 9651 0x80004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x877/0xc50 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x5c5/0xa00 kernel/locking/rwsem.c:1090 __down_read+0x6e/0x330 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 acct_collect+0xa3/0x5f0 kernel/acct.c:542 do_exit+0x4fa/0x21a0 kernel/exit.c:858 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 __do_sys_exit_group+0x17/0x20 kernel/exit.c:994 __se_sys_exit_group+0x14/0x20 kernel/exit.c:992 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:992 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: Bad RIP value. RSP: 002b:00007f2b4b08f688 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000459829 RDX: 0000000000459829 RSI: 00007f2b4b08f6c0 RDI: 000000000000000b RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f2b4b0906d4 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 #73 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+0x1d8/0x2f8 lib/dump_stack.c:113 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xbb9/0xbd0 kernel/hung_task.c:289 kthread+0x332/0x350 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: 9650 Comm: syz-executor.0 Not tainted 5.3.0-rc4 #73 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:atomic_fetch_add_unless include/linux/atomic-fallback.h:1089 [inline] RIP: 0010:atomic_add_unless include/linux/atomic-fallback.h:1111 [inline] RIP: 0010:atomic_inc_not_zero include/linux/atomic-fallback.h:1127 [inline] RIP: 0010:perf_mmap+0x5d5/0x1530 kernel/events/core.c:5707 Code: 04 30 84 c0 0f 85 66 01 00 00 45 8b 3c 24 49 89 dd 4c 8b 75 a0 41 8a 04 1e 84 c0 0f 85 6d 01 00 00 44 89 7d cc 31 ff 44 89 fe c6 81 e5 ff 45 85 ff 75 21 e8 1c 7e e5 ff 4c 8b 7d c0 e9 d0 00 RSP: 0018:ffff8880a7cb7b78 EFLAGS: 00000246 RAX: 1ffff11012c43b00 RBX: dffffc0000000000 RCX: ffffffff818e0622 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880a7cb7c40 R08: dffffc0000000000 R09: ffffed1012c43bb6 R10: ffffed1012c43bb6 R11: 0000000000000000 R12: ffff88809621dda8 R13: dffffc0000000000 R14: 1ffff11014f96f81 R15: 0000000000000000 FS: 00007f2b4b0b1700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000091061000 CR4: 00000000001406e0 Call Trace: call_mmap include/linux/fs.h:1875 [inline] mmap_region+0x17a4/0x1cb0 mm/mmap.c:1788 do_mmap+0x9ef/0x1020 mm/mmap.c:1561 do_mmap_pgoff include/linux/mm.h:2374 [inline] vm_mmap_pgoff+0x13d/0x1d0 mm/util.c:391 ksys_mmap_pgoff+0x46b/0x560 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+0x103/0x120 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfe/0x140 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:00007f2b4b0b0c78 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: 00007f2b4b0b16d4 R13: 00000000004c5d1b R14: 00000000004da750 R15: 00000000ffffffff