rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P28621/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=130697, q=132 ncpus=2)
task:udevadm         state:R  running task     stack:26384 pid:28621 ppid:27765  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6710
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7022
 irqentry_exit+0x35/0x80 kernel/entry/common.c:433
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:mt_locked lib/maple_tree.c:809 [inline]
RIP: 0010:mt_slot lib/maple_tree.c:816 [inline]
RIP: 0010:mas_slot lib/maple_tree.c:849 [inline]
RIP: 0010:mt_validate_nulls+0x9c6/0xd10 lib/maple_tree.c:7172
Code: 03 42 0f b6 04 30 84 c0 74 08 3c 03 0f 8e ce 02 00 00 44 8b 65 48 bf 00 03 00 00 41 81 e4 00 03 00 00 44 89 e6 e8 ca 69 75 f7 <41> 81 fc 00 03 00 00 0f 84 87 01 00 00 e8 98 6d 75 f7 48 8d 7d 18
RSP: 0018:ffffc900038df660 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8a0f71c6
RDX: ffff888035c5d940 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff888032331cc0 R08: 0000000000000005 R09: 0000000000000300
R10: 0000000000000300 R11: 0000000000000001 R12: 0000000000000300
R13: 000000000000000c R14: dffffc0000000000 R15: 0000000000000001
 mt_validate+0x17e3/0x4370 lib/maple_tree.c:7227
 validate_mm+0x9d/0x470 mm/mmap.c:300
 do_vmi_align_munmap+0x118f/0x1690 mm/mmap.c:2557
 do_vmi_munmap+0x266/0x430 mm/mmap.c:2619
 mmap_region+0x1f3/0x2570 mm/mmap.c:2669
 do_mmap+0x850/0xee0 mm/mmap.c:1362
 vm_mmap_pgoff+0x1a2/0x3b0 mm/util.c:543
 ksys_mmap_pgoff+0x42b/0x5b0 mm/mmap.c:1408
 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: 0033:0x7f7e3fe89b74
RSP: 002b:00007ffe49d9da18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe49d9da90 RCX: 00007f7e3fe89b74
RDX: 0000000000000001 RSI: 0000000000053000 RDI: 00007f7e3f99a000
RBP: 00007ffe49d9e1b0 R08: 0000000000000003 R09: 000000000014b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f7e3fe6d9c0
R13: 00007ffe49d9e238 R14: 000000000014ab8e R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10496 jiffies! g130697 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:28072 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6710
 schedule+0xde/0x1a0 kernel/sched/core.c:6786
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 28635 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-12069-gc17414a273b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:csd_lock_wait kernel/smp.c:296 [inline]
RIP: 0010:smp_call_function_many_cond+0x699/0x1720 kernel/smp.c:835
Code: 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 ee 53 0b 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 d1 0d 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc90003bef970 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880b9844fe0 RCX: ffffc90003c21000
RDX: 0000000000040000 RSI: ffffffff81798b82 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed10173089fd
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f414f76d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe06ce21000 CR3: 000000002a06a000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 clock_was_set+0x17b/0x830 kernel/time/hrtimer.c:976
 timekeeping_inject_offset+0x4b4/0x620 kernel/time/timekeeping.c:1395
 do_adjtimex+0x333/0xa40 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
 __do_sys_clock_adjtime+0x163/0x270 kernel/time/posix-timers.c:1171
 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: 0033:0x7f414ea8c389
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:00007f414f76d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f414ebabf80 RCX: 00007f414ea8c389
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007f414ead7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeedebcfaf R14: 00007f414f76d300 R15: 0000000000022000
 </TASK>