rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7494/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=30161, q=599 ncpus=2)
task:syz-executor.4 state:R running task stack:23824 pid:7494 tgid:7492 ppid:6644 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:filemap_map_pages+0x24/0x1e70 mm/filemap.c:3603
Code: 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 01 00 00 48 89 94 24 98 00 00 00 <48> 89 74 24 20 49 89 fe 65 48 8b 04 25 28 00 00 00 48 89 84 24 c0
RSP: 0018:ffffc900091cf2e0 EFLAGS: 00000282
RAX: 0000000000000e47 RBX: ffffffff81ca8fb0 RCX: ffffffffffffffb8
RDX: 0000000000000e4f RSI: 0000000000000e40 RDI: ffffc900091cf9a0
RBP: ffffc900091cf4f0 R08: ffffffff81e28be6 R09: 1ffffffff25f96e8
R10: dffffc0000000000 R11: ffffffff81ca8fb0 R12: ffffffff81e28bb5
R13: 0000000000000e4f R14: 0000000000000e40 R15: 1ffff92001239f34
do_fault_around mm/memory.c:5006 [inline]
do_read_fault mm/memory.c:5039 [inline]
do_fault mm/memory.c:5178 [inline]
do_pte_missing mm/memory.c:3948 [inline]
handle_pte_fault+0x3c13/0x7130 mm/memory.c:5502
__handle_mm_fault mm/memory.c:5645 [inline]
handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5810
faultin_page mm/gup.c:1339 [inline]
__get_user_pages+0x6ef/0x1590 mm/gup.c:1638
populate_vma_page_range+0x264/0x330 mm/gup.c:2078
__mm_populate+0x27a/0x460 mm/gup.c:2181
mm_populate include/linux/mm.h:3442 [inline]
vm_mmap_pgoff+0x2c3/0x3d0 mm/util.c:578
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f99f227cea9
RSP: 002b:00007f99f1dff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f99f23b3f80 RCX: 00007f99f227cea9
RDX: 0000000001000002 RSI: 0000000000fbe000 RDI: 0000000020000000
RBP: 00007f99f22ebff4 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000004012831 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f99f23b3f80 R15: 00007fff31851298
rcu: rcu_preempt kthread starved for 10533 jiffies! g30161 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:26152 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7523 Comm: syz-executor.0 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:lock_acquire+0x1d6/0x550 kernel/locking/lockdep.c:5817
Code: 10 8a 1b 0a 65 ff 05 69 4c 93 7e 45 31 c9 41 f7 c7 00 02 00 00 41 0f 94 c1 48 8b 7c 24 20 44 89 f6 8b 54 24 1c 48 8b 4c 24 30 <4c> 8b 44 24 38 6a 00 6a 00 6a 00 ff 75 10 ff 74 24 48 e8 c3 04 00
RSP: 0018:ffffc90009487540 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffc900094875a0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e3354a0
RBP: ffffc90009487688 R08: ffffffff8fae04af R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff92001290eb0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046
FS: 00007f05d09ff6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05d0faada8 CR3: 000000002d396000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
bpf_trace_run4+0x261/0x590 kernel/trace/bpf_trace.c:2446
__traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2587/0x4a20 kernel/sched/core.c:6526
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
__futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f05d0e7cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05d09ff178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f05d0fb3f88 RCX: 00007f05d0e7cea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f05d0fb3f88
RBP: 00007f05d0fb3f80 R08: 00007f05d09ff6c0 R09: 00007f05d09ff6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f05d0fb3f8c
R13: 000000000000000b R14: 00007ffe1c2041d0 R15: 00007ffe1c2042b8