INFO: task hung in vm_unmap

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	INFO: task hung in vm_unmap_aliases (2)				1	1195d	1195d	0/1	auto-closed as invalid on 2021/12/13 19:07
linux-4.19	INFO: task hung in vm_unmap_aliases				1	1558d	1558d	0/1	auto-closed as invalid on 2020/12/16 01:07

INFO: task syz-executor.0:19561 blocked for more than 140 seconds. Not tainted 4.14.176-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29168 19561 6338 0x80000004 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 vm_unmap_aliases mm/vmalloc.c:1123 [inline] vm_unmap_aliases+0x314/0x3f0 mm/vmalloc.c:1088 change_page_attr_set_clr+0x543/0xa40 arch/x86/mm/pageattr.c:1472 change_page_attr_clear arch/x86/mm/pageattr.c:1532 [inline] set_memory_ro+0x68/0x80 arch/x86/mm/pageattr.c:1761 bpf_jit_binary_lock_ro include/linux/filter.h:628 [inline] bpf_int_jit_compile+0x441/0x5fe arch/x86/net/bpf_jit_comp.c:1192 bpf_prog_select_runtime+0xde/0x4f0 kernel/bpf/core.c:1455 bpf_prog_load+0x609/0xe00 kernel/bpf/syscall.c:1062 SYSC_bpf kernel/bpf/syscall.c:1512 [inline] SyS_bpf+0xf89/0x2cd3 kernel/bpf/syscall.c:1477 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007feeae741c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004da540 RCX: 000000000045c829 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000006a R14: 00000000004c30b4 R15: 00007feeae7426d4 INFO: task syz-executor.5:19575 blocked for more than 140 seconds. Not tainted 4.14.176-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29168 19575 6339 0x80000004 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 vm_unmap_aliases mm/vmalloc.c:1123 [inline] vm_unmap_aliases+0x314/0x3f0 mm/vmalloc.c:1088 change_page_attr_set_clr+0x543/0xa40 arch/x86/mm/pageattr.c:1472