rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=63bc/1/0x4000000000000000 softirq=58090/58107 fqs=1
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14581/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=56461, q=67 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14468 Comm: syz-executor Not tainted 6.14.0-rc1-next-20250207-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:addr_has_metadata mm/kasan/kasan.h:333 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x24/0x290 mm/kasan/generic.c:189
Code: 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 <48> 89 fd 48 c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 48 89 fb
RSP: 0018:ffffc90000007af0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff819b0c40
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901bb670
RBP: ffffc90000007c60 R08: ffffffff901bb678 R09: 1ffff1100b92862b
R10: dffffc0000000000 R11: ffffed100b92862c R12: 1ffff92000000f70
R13: ffffffff89fb5a72 R14: ffff88807ca11800 R15: dffffc0000000000
FS: 000055555a5a1500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00004000000000c0 CR3: 0000000024c3a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:570 [inline]
cpu_online include/linux/cpumask.h:1116 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb0/0xa30 kernel/locking/lockdep.c:5862
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
advance_sched+0xb32/0xca0 net/sched/sch_taprio.c:987
__run_hrtimer kernel/time/hrtimer.c:1801 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1865
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5855
Code: 2b 00 74 08 4c 89 f7 e8 ca 7e 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000f5ce160 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001eb9c38 RCX: ffff88802dde0ae8
RDX: dffffc0000000000 RSI: ffffffff8c0abb80 RDI: ffffffff8c60ca20
RBP: ffffc9000f5ce2b0 R08: ffffffff9430b847 R09: 1ffffffff2861708
R10: dffffc0000000000 R11: fffffbfff2861709 R12: 1ffff92001eb9c34
R13: dffffc0000000000 R14: ffffc9000f5ce1c0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1164 [inline]
unwind_next_frame+0xd5/0x2380 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4129 [inline]
slab_alloc_node mm/slub.c:4178 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4185
__kernfs_new_node+0xd8/0x870 fs/kernfs/dir.c:624
kernfs_new_node+0x137/0x240 fs/kernfs/dir.c:700
__kernfs_create_file+0x49/0x2e0 fs/kernfs/file.c:1034
sysfs_add_file_mode_ns+0x24a/0x310 fs/sysfs/file.c:313
sysfs_merge_group+0x1fd/0x450 fs/sysfs/group.c:376
dpm_sysfs_add+0xd3/0x280 drivers/base/power/sysfs.c:707
device_add+0x5bc/0xbf0 drivers/base/core.c:3625
netdev_register_kobject+0x157/0x2f0 net/core/net-sysfs.c:2328
register_netdevice+0x12c3/0x1b10 net/core/dev.c:10868
veth_newlink+0x3fd/0xb00 drivers/net/veth.c:1815
rtnl_newlink_create+0x2ee/0xa40 net/core/rtnetlink.c:3800
__rtnl_newlink net/core/rtnetlink.c:3911 [inline]
rtnl_newlink+0x1c7e/0x2210 net/core/rtnetlink.c:4026
rtnetlink_rcv_msg+0x791/0xcf0 net/core/rtnetlink.c:6916
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1892
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:733
__sys_sendto+0x363/0x4c0 net/socket.c:2187
__do_sys_sendto net/socket.c:2194 [inline]
__se_sys_sendto net/socket.c:2190 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2190
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: 0033:0x7fd9edf8ec7c
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007ffdbaa235a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fd9eecd4620 RCX: 00007fd9edf8ec7c
RDX: 000000000000006c RSI: 00007fd9eecd4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffdbaa235f4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fd9eecd4670 R15: 0000000000000000
task:syz.6.2014 state:R running task stack:25792 pid:14581 tgid:14581 ppid:10931 task_flags:0x40004c flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6943
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6967
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1763 [inline]
zap_pmd_range mm/memory.c:1825 [inline]
zap_pud_range mm/memory.c:1854 [inline]
zap_p4d_range mm/memory.c:1875 [inline]
unmap_page_range+0x3af2/0x4270 mm/memory.c:1896
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1986
exit_mmap+0x283/0xd40 mm/mmap.c:1284
__mmput+0x115/0x420 kernel/fork.c:1356
exit_mm+0x220/0x310 kernel/exit.c:581
do_exit+0x9ad/0x2860 kernel/exit.c:936
do_group_exit+0x207/0x2c0 kernel/exit.c:1098
__do_sys_exit_group kernel/exit.c:1109 [inline]
__se_sys_exit_group kernel/exit.c:1107 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1107
x64_sys_call+0x26c3/0x26d0 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7f7d9538cde9
RSP: 002b:00007ffd91e05498 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7d9538cde9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd91e054fc R08: 0000000591e0558f R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000a5
R13: 00000000000927c0 R14: 000000000010b415 R15: 00007ffd91e05550
rcu: rcu_preempt kthread starved for 10500 jiffies! g56461 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:25624 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 14577 Comm: syz.7.2012 Not tainted 6.14.0-rc1-next-20250207-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5855
Code: 2b 00 74 08 4c 89 f7 e8 ca 7e 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90000a187a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000143100 RCX: ffff8880266c28e8
RDX: dffffc0000000000 RSI: ffffffff8c0abb80 RDI: ffffffff8c60ca20
RBP: ffffc90000a188f8 R08: ffffffff9430b8bf R09: 1ffffffff2861717
R10: dffffc0000000000 R11: fffffbfff2861718 R12: 1ffff920001430fc
R13: dffffc0000000000 R14: ffffc90000a18800 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad3e1666bc CR3: 00000000472c4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
mac80211_hwsim_tx_frame_no_nl+0x982/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1817
mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2215
mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
__iterate_interfaces+0x297/0x570 net/mac80211/util.c:760
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:796
mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
__run_hrtimer kernel/time/hrtimer.c:1801 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1865
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1882
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x1ba4/0x2d30 kernel/smp.c:885
Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 50 e9 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 00 e5 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00
RSP: 0018:ffffc9000bbcef40 EFLAGS: 00000293
RAX: ffffffff81b3a415 RBX: 1ffff110170c8c99 RCX: ffff8880266c1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000bbcf140 R08: ffffffff81b3a3e0 R09: 1ffffffff20376ce
R10: dffffc0000000000 R11: ffffffff816941d0 R12: ffff8880b873fb48
R13: ffff8880b86464c8 R14: ffff8880b873fb40 R15: 0000000000000000
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:966 [inline]
flush_tlb_mm_range+0x42d/0x710 arch/x86/mm/tlb.c:1054
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:494 [inline]
zap_pte_range mm/memory.c:1760 [inline]
zap_pmd_range mm/memory.c:1825 [inline]
zap_pud_range mm/memory.c:1854 [inline]
zap_p4d_range mm/memory.c:1875 [inline]
unmap_page_range+0x3946/0x4270 mm/memory.c:1896
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1986
exit_mmap+0x283/0xd40 mm/mmap.c:1284
__mmput+0x115/0x420 kernel/fork.c:1356
exit_mm+0x220/0x310 kernel/exit.c:581
do_exit+0x9ad/0x2860 kernel/exit.c:936
do_group_exit+0x207/0x2c0 kernel/exit.c:1098
get_signal+0x16b2/0x1750 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc96b78cde9
Code: Unable to access opcode bytes at 0x7fc96b78cdbf.
RSP: 002b:00007fc96c5d70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fc96b9a6088 RCX: 00007fc96b78cde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc96b9a6088
RBP: 00007fc96b9a6080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc96b9a608c
R13: 0000000000000000 R14: 00007ffd95c69b50 R15: 00007ffd95c69c38
vkms_vblank_simulate: vblank timer overrun
hrtimer: interrupt took 2530003613 ns
vkms_vblank_simulate: vblank timer overrun