rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2757 jiffies s: 1393 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3734 Comm: syz.0.1 Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:trace_hardirqs_on+0x2f/0x40 kernel/trace/trace_preemptirq.c:49 Code: 71 7e 85 c0 74 24 65 8b 05 16 fd 70 7e a9 00 00 f0 00 75 0b 48 8b 3c 24 31 f6 e8 1c 00 00 00 65 c7 05 e9 c2 71 7e 00 00 00 00 2c d8 d8 ff 48 8b 3c 24 e9 23 39 15 09 0f 1f 00 55 41 57 41 56 RSP: 0018:ffffc90000006ae0 EFLAGS: 00000046 RAX: 0000000000000300 RBX: 0000000000000000 RCX: 0000000000010300 RDX: 1ffffffff2028400 RSI: 0000000000000000 RDI: ffffffff8ac00d46 RBP: 0000000000000000 R08: ffffffff90142000 R09: ffffffff90142008 R10: ffffffff90142018 R11: ffffffff90142010 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb0681396c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f31cffc CR3: 00000000290ae000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__ipv6_dev_get_saddr+0x473/0x4a0 net/ipv6/addrconf.c:1679 Code: a6 95 8e 48 c7 c6 60 51 13 8c e8 88 ef ff fa e9 7b fe ff ff e8 be b0 29 f8 e9 71 fe ff ff e8 b4 b0 29 f8 44 8b 64 24 14 eb 05 a8 b0 29 f8 44 89 e0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0018:ffffc90000006b98 EFLAGS: 00000246 RAX: 1ffff92000000d8d RBX: ffff88805c2d7010 RCX: dffffc0000000000 RDX: 0000000000000100 RSI: ffffc90000006cc0 RDI: ffff8880747e0000 RBP: ffffc90000006c68 R08: 0000000000000001 R09: fffff52000000d8f R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffc90000006c60 R14: ffff8880747e0000 R15: ffff88805c2d6eb8 ipv6_dev_get_saddr+0x417/0xbc0 net/ipv6/addrconf.c:1848 ip6_route_get_saddr include/net/ip6_route.h:152 [inline] ip6_dst_lookup_tail+0xebc/0x1470 net/ipv6/ip6_output.c:1129 ip6_dst_lookup_flow+0xb5/0x170 net/ipv6/ip6_output.c:1255 geneve_get_v6_dst+0x852/0xb80 drivers/net/geneve.c:900 geneve6_xmit_skb drivers/net/geneve.c:1037 [inline] geneve_xmit+0x8a4/0x3550 drivers/net/geneve.c:1121 __netdev_start_xmit include/linux/netdevice.h:4853 [inline] netdev_start_xmit include/linux/netdevice.h:4867 [inline] xmit_one net/core/dev.c:3627 [inline] dev_hard_start_xmit+0x261/0x8c0 net/core/dev.c:3643 __dev_queue_xmit+0x1bb1/0x3cf0 net/core/dev.c:4293 dev_queue_xmit include/linux/netdevice.h:3021 [inline] neigh_hh_output include/net/neighbour.h:528 [inline] neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0xeae/0x15f0 net/ipv6/ip6_output.c:138 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline] ip6_finish_output+0x6a0/0xa80 net/ipv6/ip6_output.c:216 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xbab/0x14e0 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3963 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__preempt_count_add kernel/rcu/tree.c:717 [inline] RIP: 0010:rcu_is_watching+0x4/0xb0 kernel/rcu/tree.c:720 Code: 21 02 0f 84 02 ff ff ff e9 6c ff ff ff 48 c7 c7 60 19 33 8d 4c 89 f6 e8 1a 94 f1 02 e9 2b ff ff ff e8 60 42 33 09 41 57 41 56 <53> 65 ff 05 4c 06 8f 7e e8 9f 5a 33 09 89 c3 83 f8 08 73 76 49 bf RSP: 0018:ffffc90004987888 EFLAGS: 00000257 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816a83db RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e99f968 RBP: ffffc90004987a00 R08: dffffc0000000000 R09: fffffbfff1d33f2e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000930f1c R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xfa/0x5a0 kernel/locking/lockdep.c:5633 rcu_lock_acquire include/linux/rcupdate.h:350 [inline] rcu_read_lock include/linux/rcupdate.h:791 [inline] percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline] percpu_ref_tryget+0x31/0x170 include/linux/percpu-refcount.h:266 obj_cgroup_tryget include/linux/memcontrol.h:779 [inline] __get_obj_cgroup_from_memcg+0x70/0xe0 mm/memcontrol.c:3001 get_obj_cgroup_from_current+0x170/0x280 mm/memcontrol.c:3021 memcg_slab_pre_alloc_hook mm/slab.h:485 [inline] slab_pre_alloc_hook+0x90/0x300 mm/slab.h:715 slab_alloc_node mm/slub.c:3318 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x4e/0x2d0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:683 [inline] __alloc_file+0x26/0x230 fs/file_table.c:138 alloc_empty_file+0x92/0x180 fs/file_table.c:187 alloc_file+0x5c/0x5e0 fs/file_table.c:229 alloc_file_pseudo+0x259/0x2f0 fs/file_table.c:272 __anon_inode_getfile fs/anon_inodes.c:109 [inline] anon_inode_getfile+0xc4/0x180 fs/anon_inodes.c:147 __do_sys_perf_event_open kernel/events/core.c:12553 [inline] __se_sys_perf_event_open+0x1168/0x4960 kernel/events/core.c:12327 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb06737dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb068139038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fb067535f80 RCX: 00007fb06737dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007fb0673f0296 R08: 0000000000000008 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb067535f80 R15: 00007ffc558ab2a8