INFO: task syz-executor159:10407 blocked for more than 143 seconds. Not tainted 5.3.0-rc3+ #94 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor159 D24544 10407 10406 0x00000000 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 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline] __do_page_fault+0xaa2/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x4aeba0 Code: Bad RIP value. RSP: 002b:00007ffdc546a828 EFLAGS: 00010206 RAX: 00000000004aeba0 RBX: 0000000000000001 RCX: 00000000006e47b0 RDX: 0000000000409e70 RSI: 0000000000000001 RDI: 00000000004d0430 RBP: 00007ffdc546a830 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffdc546a8b0 R11: 0000000000000000 R12: 0000000000000001 R13: 00000000006e47a0 R14: 000000000000002d R15: 0000000000000006 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc3+ #94 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: 10417 Comm: syz-executor159 Not tainted 5.3.0-rc3+ #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_acquire+0x1b9/0x410 kernel/locking/lockdep.c:4414 Code: ff 48 b8 00 00 00 00 00 fc ff df 65 48 8b 1c 25 40 fe 01 00 48 8d bb 8c 08 00 00 48 83 c4 20 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 0d 02 00 00 48 RSP: 0018:ffff8880920278a0 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffff88808ed74080 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88808ed7490c RBP: ffff8880920278e8 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff134ae67 R11: ffff88808ed74080 R12: ffff8880a1974bd0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fdd2663b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000096c1e000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mutex_lock_common kernel/locking/mutex.c:930 [inline] __mutex_lock+0x156/0x13c0 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: 0033:0x448d19 Code: e8 7c 1a 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 3b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fdd2663acd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00000000006dfc58 RCX: 0000000000448d19 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 00000000006dfc50 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000001011 R11: 0000000000000246 R12: 00000000006dfc5c R13: 00007ffdc546a80f R14: 00007fdd2663b9c0 R15: 0000000000000005