INFO: task can't die in show_free

Title	Replies (including bot)	Last reply
[syzbot] INFO: task can't die in show_free_areas	0 (2)	2022/02/03 00:14

Title

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[syzbot] INFO: task can't die in show_free_areas

0 (2)

2022/02/03 00:14

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in do_exit	syz	done	error	125	485d	1507d	0/24	closed as invalid on 2022/02/08 10:54
linux-4.14	INFO: task hung in do_exit	syz		inconclusive	8	481d	1496d	0/1	upstream: reported syz repro on 2019/04/25 02:28
linux-4.19	INFO: task hung in do_exit	C		error	58	113d	1501d	0/1	upstream: reported C repro on 2019/04/19 20:32
upstream	INFO: task can't die in irqentry_exit (2)	C	error		22	482d	898d	0/24	auto-obsoleted due to no activity on 2022/10/23 05:49
upstream	INFO: task hung in tty_open				1	602d	602d	0/24	auto-closed as invalid on 2022/01/02 10:09
linux-4.14	INFO: task hung in tty_open (2)				1	136d	136d	0/1	upstream: reported on 2023/01/13 14:16
upstream	INFO: task hung in tty_open (2) kernel	C	error	error	18	58d	477d	0/24	upstream: reported C repro on 2022/02/07 03:39
android-414	INFO: task hung in do_exit	syz			19	1275d	1508d	0/1	public: reported syz repro on 2019/04/13 00:01
android-49	INFO: task hung in do_exit	syz			18	1322d	1506d	0/3	public: reported syz repro on 2019/04/14 09:28

Created	Duration	User	Patch	Repo	Result
2022/10/23 06:30	19m	retest repro		linux-next	report log

Created

Duration

User

Patch

Repo

Result

2022/10/23 06:30

19m

retest repro

linux-next

report log

INFO: task syz-executor372:3664 can't die for more than 143 seconds. task:syz-executor372 state:R running task stack:26120 pid: 3664 ppid: 3651 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6475 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 vprintk_emit+0x1c9/0x4f0 kernel/printk/printk.c:2249 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50 _printk+0xba/0xed kernel/printk/printk.c:2269 show_free_areas.cold+0x4aa/0x961 mm/page_alloc.c:6052 show_mem+0x31/0x191 lib/show_mem.c:17 warn_alloc_show_mem mm/page_alloc.c:4268 [inline] warn_alloc.cold+0x121/0x189 mm/page_alloc.c:4293 __vmalloc_area_node mm/vmalloc.c:3003 [inline] __vmalloc_node_range+0xeb5/0x1130 mm/vmalloc.c:3157 __vmalloc_node mm/vmalloc.c:3222 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3292 n_tty_open+0x16/0x170 drivers/tty/n_tty.c:1813 tty_ldisc_open+0x9b/0x110 drivers/tty/tty_ldisc.c:433 tty_ldisc_setup+0x43/0x100 drivers/tty/tty_ldisc.c:740 tty_init_dev.part.0+0x1f4/0x610 drivers/tty/tty_io.c:1443 tty_init_dev include/linux/err.h:36 [inline] tty_open_by_driver drivers/tty/tty_io.c:2086 [inline] tty_open+0xb16/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000000 </TASK> INFO: task syz-executor372:3665 can't die for more than 143 seconds. task:syz-executor372 state:D stack:28112 pid: 3665 ppid: 3654 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000000 </TASK> INFO: task syz-executor372:3665 blocked for more than 144 seconds. Not tainted 5.17.0-rc2-next-20220202-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor372 state:D stack:28112 pid: 3665 ppid: 3654 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000000 </TASK> INFO: task syz-executor372:3666 can't die for more than 144 seconds. task:syz-executor372 state:D stack:27696 pid: 3666 ppid: 3653 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000000 </TASK> INFO: task syz-executor372:3666 blocked for more than 144 seconds. Not tainted 5.17.0-rc2-next-20220202-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor372 state:D stack:27696 pid: 3666 ppid: 3653 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000000 </TASK> INFO: task syz-executor372:3671 can't die for more than 144 seconds. task:syz-executor372 state:D stack:28112 pid: 3671 ppid: 3652 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000001 </TASK> INFO: task syz-executor372:3671 blocked for more than 145 seconds. Not tainted 5.17.0-rc2-next-20220202-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor372 state:D stack:28112 pid: 3671 ppid: 3652 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5000 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6309 schedule+0xd2/0x260 kernel/sched/core.c:6382 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6441 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x1240 fs/open.c:957 do_open fs/namei.c:3476 [inline] path_openat+0x1c9e/0x2940 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4d0 fs/open.c:1347 do_sys_open fs/open.c:1363 [inline] __do_sys_openat fs/open.c:1379 [inline] __se_sys_openat fs/open.c:1374 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1374 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f16eac9d7 RSP: 002b:00007ffe798c0ac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5f16eac9d7 RDX: 0000000000000002 RSI: 00007ffe798c0b50 RDI: 00000000ffffff9c RBP: 00007ffe798c0b50 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe798c0c10 R14: 00007ffe798c0c50 R15: 0000000000000001 </TASK> Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb83a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6463 2 locks held by getty/3274: #0: ffff88814abb0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077 3 locks held by syz-executor372/3664: 1 lock held by syz-executor372/3665: #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 1 lock held by syz-executor372/3666: #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 1 lock held by syz-executor372/3671: #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 1 lock held by syz-executor372/3680: #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 1 lock held by syz-executor372/3683: #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline] #0: ffffffff8c5b60c8 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc2-next-20220202-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:413 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3668 Comm: kworker/u4:6 Not tainted 5.17.0-rc2-next-20220202-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:__lock_release kernel/locking/lockdep.c:5323 [inline] RIP: 0010:lock_release+0x217/0x720 kernel/locking/lockdep.c:5659 Code: e8 6e 08 ff ff 48 85 c0 48 89 c3 0f 84 85 03 00 00 48 8d 78 24 48 b8 00 00 00 00 00 fc ff df 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 94 04 00 00 8b RSP: 0018:ffffc900028bf920 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffff88801f760b30 RCX: ffffc900028bf970 RDX: 0000000000000000 RSI: ffff888010db6138 RDI: ffff88801f760b54 RBP: 1ffff92000517f26 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 000000000000003f R12: ffff888010db6138 R13: 0000000000000006 R14: ffff88801f760a60 R15: ffff88801f760000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80cab3f680 CR3: 000000000b88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:394 [inline] __text_poke+0x5d4/0x8c0 arch/x86/kernel/alternative.c:1059 text_poke_bp_batch+0x2c3/0x4e0 arch/x86/kernel/alternative.c:1313 text_poke_flush arch/x86/kernel/alternative.c:1470 [inline] text_poke_flush arch/x86/kernel/alternative.c:1467 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1477 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x1da/0x400 kernel/jump_label.c:830 static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207 static_key_disable+0x16/0x20 kernel/jump_label.c:215 toggle_allocation_gate mm/kfence/core.c:748 [inline] toggle_allocation_gate+0x183/0x390 mm/kfence/core.c:726 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.308 msecs ---------------- Code disassembly (best guess): 0: e8 6e 08 ff ff callq 0xffff0873 5: 48 85 c0 test %rax,%rax 8: 48 89 c3 mov %rax,%rbx b: 0f 84 85 03 00 00 je 0x396 11: 48 8d 78 24 lea 0x24(%rax),%rdi 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 94 04 00 00 jne 0x4d3 3f: 8b .byte 0x8b

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets	Manager	Title
2022/02/03 00:14	linux-next	6abab1b81b65	4ebb2798	.config	console log	report	syz	C			ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/02/04 05:59	linux-next	ef6b35306dd8	30646bfe	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/02/03 08:11	linux-next	2d3d8c7643a5	4ebb2798	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/02/02 08:02	linux-next	6abab1b81b65	4ebb2798	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/02/02 04:38	linux-next	6abab1b81b65	4ebb2798	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/01/27 05:15	linux-next	0eb96e2c58c0	2cbffd88	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2022/01/24 13:23	linux-next	74e5dee6a5b9	214351e1	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2021/12/10 20:33	linux-next	4eee8d0b64ec	49ca1f59	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2021/12/09 16:54	linux-next	4eee8d0b64ec	b54aa474	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2021/12/06 12:45	linux-next	5d02ef4b57f6	579a8754	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2021/11/27 05:04	linux-next	f81e94e91878	63eeac02	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in show_free_areas
2023/03/28 06:09	upstream	91fe204578ba	47f3aaf1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: task hung in do_exit
2023/03/02 07:11	upstream	ee3f96b16468	f8902b57	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: task hung in do_exit
2023/01/09 11:39	linux-next	543b9b2fe10b	1dac8c7a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: task hung in do_exit