rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P22536/1:b..l
(detected by 1, t=10502 jiffies, g=62857, q=68 ncpus=2)
task:modprobe state:R running task stack:26416 pid:22536 ppid:5593 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
preempt_schedule_irq+0x52/0xa0 kernel/sched/core.c:6867
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0x103/0x140 kernel/locking/lockdep.c:5716
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 e0 74 fc 75 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc90015fd76e8 EFLAGS: 00000286
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888017b3c758 R08: 0000000000000005 R09: 0000000000000300
R10: 0000000000000300 R11: 0000000000094001 R12: ffff88807dba9d40
R13: 0000000000000001 R14: 00000000ffffffff R15: ffff88807dbaa778
lock_is_held include/linux/lockdep.h:283 [inline]
mt_locked lib/maple_tree.c:806 [inline]
mt_slot lib/maple_tree.c:812 [inline]
mas_slot lib/maple_tree.c:840 [inline]
mas_get_slot lib/maple_tree.c:6583 [inline]
mas_validate_gaps lib/maple_tree.c:6881 [inline]
mt_validate+0x2019/0x3230 lib/maple_tree.c:7149
validate_mm_mt+0xa7/0x1b0 mm/mmap.c:295
__split_vma+0x2a/0x5e0 mm/mmap.c:2199
do_mas_align_munmap+0x7e0/0x1260 mm/mmap.c:2358
do_mas_munmap+0x26e/0x2c0 mm/mmap.c:2498
mmap_region+0x21d/0x1dd0 mm/mmap.c:2546
do_mmap+0x831/0xf60 mm/mmap.c:1411
vm_mmap_pgoff+0x1af/0x280 mm/util.c:520
ksys_mmap_pgoff+0x41f/0x5a0 mm/mmap.c:1457
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b87bca1f2
RSP: 002b:00007ffe80236638 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6b87bca1f2
RDX: 0000000000000001 RSI: 0000000000018000 RDI: 00007f6b878cb000
RBP: 00007f6b878cb000 R08: 0000000000000000 R09: 0000000000022000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffe80236650
R13: 00007ffe802366b0 R14: 0000000000000001 R15: 00007f6b87ba94b0
rcu: rcu_preempt kthread starved for 9950 jiffies! g62857 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28656 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1656
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1855
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 22551 Comm: syz-executor.1 Not tainted 6.2.0-rc2-syzkaller-00010-g69b41ac87e4a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:unwind_next_frame+0xa9/0x1d00 arch/x86/kernel/unwind_orc.c:452
Code: 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 e2 15 00 00 49 8b 45 38 bf 01 00 00 00 48 89 44 24 18 e2 4f 1e 00 49 8d 45 50 48 89 c2 48 89 04 24 48 b8 00 00 00 00
RSP: 0018:ffffc90016027430 EFLAGS: 00000246
RAX: ffffc90016027f40 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1ffff92002c04e9b RSI: ffffffff8a05bec9 RDI: 0000000000000001
RBP: ffffc900160274e8 R08: ffffffff8f040216 R09: ffffc900160274d4
R10: fffff52002c04e9f R11: ffffc90016027f38 R12: ffffc90016027558
R13: ffffc900160274a0 R14: ffff8880559dba80 R15: ffffea000093ca40
FS: 00007fd9f45de700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd9f45de718 CR3: 000000005aacd000 CR4: 0000000000350ee0
Call Trace:
arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3787 [inline]
__kmem_cache_free+0xaf/0x3b0 mm/slub.c:3800
tty_free_file drivers/tty/tty_io.c:219 [inline]
tty_open+0x7af/0xfb0 drivers/tty/tty_io.c:2129
chrdev_open+0x26a/0x770 fs/char_dev.c:414
do_dentry_open+0x6cc/0x13f0 fs/open.c:882
do_open fs/namei.c:3557 [inline]
path_openat+0x1bbc/0x2a50 fs/namei.c:3714
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd9f388c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9f45de168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd9f39ac2c0 RCX: 00007fd9f388c0c9
RDX: 0000000000000400 RSI: 0000000020000240 RDI: ffffffffffffff9c
RBP: 00007fd9f38e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3e4a422f R14: 00007fd9f45de300 R15: 0000000000022000