INFO: task syz-executor.2:5362 blocked for more than 143 seconds. Not tainted 5.3.0-rc2+ #56 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D25992 5362 22407 0x80004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x685/0xb50 kernel/locking/rwsem.c:1090 __down_read+0xa8/0x3d0 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 exit_mm+0xdb/0x640 kernel/exit.c:513 do_exit+0x5d0/0x2300 kernel/exit.c:866 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:00007ffc14e81718 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000459829 RDX: 0000000000413511 RSI: fffffffffffffff7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007ffc14e81770 R10: 0000000000760f40 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc14e81770 R14: 0000000000000000 R15: 00007ffc14e81780 INFO: task syz-executor.2:5364 blocked for more than 143 seconds. Not tainted 5.3.0-rc2+ #56 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24584 5364 22407 0x80004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x685/0xb50 kernel/locking/rwsem.c:1090 __down_read+0xa8/0x3d0 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 exit_mm+0xdb/0x640 kernel/exit.c:513 do_exit+0x5d0/0x2300 kernel/exit.c:866 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 get_signal+0x51c/0x1dd0 kernel/signal.c:2729 do_signal+0x7b/0x720 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:00007fad9224ccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000075bf28 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007ffc14e8150f R14: 00007fad9224d9c0 R15: 000000000075bf2c INFO: task syz-executor.2:5407 blocked for more than 144 seconds. Not tainted 5.3.0-rc2+ #56 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D25736 5407 22407 0x80004000 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880 schedule+0x131/0x1e0 kernel/sched/core.c:3944 rwsem_down_read_slowpath+0x685/0xb50 kernel/locking/rwsem.c:1090 __down_read+0xa8/0x3d0 kernel/locking/rwsem.c:1320 down_read+0x45/0x50 kernel/locking/rwsem.c:1463 exit_mm+0xdb/0x640 kernel/exit.c:513 do_exit+0x5d0/0x2300 kernel/exit.c:866 do_group_exit+0x15c/0x2b0 kernel/exit.c:983 get_signal+0x51c/0x1dd0 kernel/signal.c:2729 do_signal+0x7b/0x720 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:00007fad9222bcf8 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: 00007ffc14e8150f R14: 00007fad9222c9c0 R15: 000000000075bfd4 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc2+ #56 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5409 Comm: syz-executor.2 Not tainted 5.3.0-rc2+ #56 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline] RIP: 0010:check_memory_region+0x95/0x2e0 mm/kasan/generic.c:192 Code: 00 4c 89 cb 4c 29 d3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 45 0f b6 19 45 84 db 0f 85 09 02 00 00 49 ff c1 48 ff c3 75 eb 7b 01 00 00 44 89 cb 83 e3 07 0f 84 0a 01 00 00 41 be 08 00 00 RSP: 0018:ffff88803e946dc0 EFLAGS: 00000256 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff819eefec RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88812ffffcc8 RBP: ffff88803e946de8 R08: dffffc0000000000 R09: ffffed1025ffff9a R10: ffffed1025ffff9a R11: 0000000000000000 R12: 1ffff11025ffff99 R13: dffffc0000000001 R14: 0000000000000001 R15: ffff88803e9473e0 FS: 00007fad9220b700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000009013a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __kasan_check_read+0x11/0x20 mm/kasan/common.c:92 atomic64_read include/asm-generic/atomic-instrumented.h:836 [inline] atomic_long_read include/asm-generic/atomic-long.h:28 [inline] node_page_state+0x1c/0x50 mm/vmstat.c:995 too_many_isolated mm/compaction.c:753 [inline] isolate_migratepages_block+0x163/0x2590 mm/compaction.c:800 isolate_migratepages mm/compaction.c:1817 [inline] compact_zone+0x2a31/0x3980 mm/compaction.c:2158 compact_zone_order mm/compaction.c:2308 [inline] try_to_compact_pages+0x849/0x1180 mm/compaction.c:2360 __alloc_pages_direct_compact+0x135/0x410 mm/page_alloc.c:3902 __alloc_pages_slowpath+0x734/0x2680 mm/page_alloc.c:4465 __alloc_pages_nodemask+0x4d6/0x790 mm/page_alloc.c:4745 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] alloc_pages_vma+0x947/0xca0 mm/mempolicy.c:2088 new_page+0x2f7/0x3a0 mm/mempolicy.c:1145 unmap_and_move mm/migrate.c:1173 [inline] migrate_pages+0x3fc/0x2830 mm/migrate.c:1424 do_mbind mm/mempolicy.c:1256 [inline] kernel_mbind+0x17d8/0x1940 mm/mempolicy.c:1373 __do_sys_mbind mm/mempolicy.c:1380 [inline] __se_sys_mbind mm/mempolicy.c:1376 [inline] __x64_sys_mbind+0xe5/0x100 mm/mempolicy.c:1376 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:00007fad9220ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000c00000 RDI: 0000000020012000 RBP: 000000000075c070 R08: 0000000000020000 R09: 0000010000000002 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad9220b6d4 R13: 00000000004c5c8d R14: 00000000004da548 R15: 00000000ffffffff