====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz-executor/22497 is trying to acquire lock: ffffffff8e9b7d00 (fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:317 [inline] ffffffff8e9b7d00 (fs_reclaim){+.+.}-{0:0}, at: prepare_alloc_pages+0x166/0x5f0 mm/page_alloc.c:5048 but task is already holding lock: ffffffff8e97e920 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0xe87/0x1ca0 mm/percpu.c:1788 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #8 (pcpu_alloc_mutex){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a4/0x1bd0 kernel/locking/mutex.c:821 pcpu_alloc_noprof+0xe87/0x1ca0 mm/percpu.c:1788 bpf_prog_alloc_no_stats+0x19c/0x630 kernel/bpf/core.c:115 bpf_prog_alloc+0x3b/0x200 kernel/bpf/core.c:155 __get_filter+0x112/0x2d0 net/core/filter.c:1515 sk_attach_filter+0x1c/0x160 net/core/filter.c:1550 sk_setsockopt+0x3a9b/0x5d80 net/core/sock.c:1475 udp_lib_setsockopt+0x42b/0x890 net/ipv4/udp.c:2895 udpv6_setsockopt+0xa3/0xb0 net/ipv6/udp.c:1820 do_sock_setsockopt+0xf3/0x1d0 net/socket.c:2368 __sys_setsockopt+0x195/0x220 net/socket.c:2393 __do_sys_setsockopt net/socket.c:2399 [inline] __se_sys_setsockopt net/socket.c:2396 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2396 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #7 (sk_lock-AF_INET6){+.+.}-{0:0}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 lock_sock_nested+0x41/0xf0 net/core/sock.c:3825 lock_sock include/net/sock.h:1713 [inline] tls_sw_sendmsg+0x1c8/0x2b10 net/tls/tls_sw.c:1007 inet6_sendmsg+0x11c/0x140 net/ipv6/af_inet6.c:641 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] sock_write_iter+0x41a/0x5b0 net/socket.c:1241 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x1f8/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #6 (&ctx->tx_lock){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a4/0x1bd0 kernel/locking/mutex.c:821 tls_sw_sendmsg+0x141/0x2b10 net/tls/tls_sw.c:1004 inet6_sendmsg+0x11c/0x140 net/ipv6/af_inet6.c:641 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] sock_sendmsg+0x28c/0x410 net/socket.c:813 __sock_xmit+0x25a/0x520 drivers/block/nbd.c:576 sock_xmit drivers/block/nbd.c:605 [inline] send_disconnects drivers/block/nbd.c:1443 [inline] nbd_disconnect.isra.0+0x329/0x401 drivers/block/nbd.c:1458 nbd_disconnect_and_put+0x2e/0x1c0 drivers/block/nbd.c:2294 nbd_genl_disconnect+0x34b/0x4e0 drivers/block/nbd.c:2340 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738 __sys_sendmsg+0x160/0x210 net/socket.c:2770 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (&nsock->tx_lock){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a4/0x1bd0 kernel/locking/mutex.c:821 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x428/0x1080 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0x422/0x1e70 block/blk-mq.c:2117 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xcea/0x1620 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x1c0 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x23c/0x670 block/blk-mq.c:2355 blk_mq_dispatch_list+0x51d/0x1360 block/blk-mq.c:2918 blk_mq_flush_plug_list block/blk-mq.c:2966 [inline] blk_mq_flush_plug_list+0x130/0x600 block/blk-mq.c:2938 __blk_flush_plug+0x2c4/0x4b0 block/blk-core.c:1273 blk_finish_plug block/blk-core.c:1300 [inline] __submit_bio+0x584/0x6c0 block/blk-core.c:690 __submit_bio_noacct_mq block/blk-core.c:763 [inline] submit_bio_noacct_nocheck+0x549/0xc00 block/blk-core.c:797 submit_bio_noacct+0xd17/0x1ff0 block/blk-core.c:928 blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline] __bh_submit+0x658/0x850 fs/buffer.c:1225 bh_submit fs/buffer.c:1239 [inline] block_read_full_folio+0x1f7/0x8c0 fs/buffer.c:2449 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2510 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4140 read_mapping_folio include/linux/pagemap.h:1015 [inline] read_part_sector+0xd1/0x370 block/partitions/core.c:724 adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695 blkdev_get_whole+0x187/0x290 block/bdev.c:751 bdev_open+0x2c7/0xe40 block/bdev.c:960 blkdev_open+0x34e/0x4f0 block/fops.c:672 do_dentry_open+0x6ab/0x14d0 fs/open.c:947 vfs_open+0x82/0x3f0 fs/open.c:1052 do_open fs/namei.c:4700 [inline] path_openat+0x2873/0x4280 fs/namei.c:4859 do_file_open+0x20e/0x430 fs/namei.c:4888 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_openat fs/open.c:1390 [inline] __se_sys_openat fs/open.c:1385 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1385 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #4 (&cmd->lock){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a4/0x1bd0 kernel/locking/mutex.c:821 nbd_queue_rq+0xba/0x1080 drivers/block/nbd.c:1199 blk_mq_dispatch_rq_list+0x422/0x1e70 block/blk-mq.c:2117 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xcea/0x1620 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x1c0 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x23c/0x670 block/blk-mq.c:2355 blk_mq_dispatch_list+0x51d/0x1360 block/blk-mq.c:2918 blk_mq_flush_plug_list block/blk-mq.c:2966 [inline] blk_mq_flush_plug_list+0x130/0x600 block/blk-mq.c:2938 __blk_flush_plug+0x2c4/0x4b0 block/blk-core.c:1273 blk_finish_plug block/blk-core.c:1300 [inline] __submit_bio+0x584/0x6c0 block/blk-core.c:690 __submit_bio_noacct_mq block/blk-core.c:763 [inline] submit_bio_noacct_nocheck+0x549/0xc00 block/blk-core.c:797 submit_bio_noacct+0xd17/0x1ff0 block/blk-core.c:928 blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline] __bh_submit+0x658/0x850 fs/buffer.c:1225 bh_submit fs/buffer.c:1239 [inline] block_read_full_folio+0x1f7/0x8c0 fs/buffer.c:2449 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2510 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4140 read_mapping_folio include/linux/pagemap.h:1015 [inline] read_part_sector+0xd1/0x370 block/partitions/core.c:724 adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695 blkdev_get_whole+0x187/0x290 block/bdev.c:751 bdev_open+0x2c7/0xe40 block/bdev.c:960 blkdev_open+0x34e/0x4f0 block/fops.c:672 do_dentry_open+0x6ab/0x14d0 fs/open.c:947 vfs_open+0x82/0x3f0 fs/open.c:1052 do_open fs/namei.c:4700 [inline] path_openat+0x2873/0x4280 fs/namei.c:4859 do_file_open+0x20e/0x430 fs/namei.c:4888 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_openat fs/open.c:1390 [inline] __se_sys_openat fs/open.c:1385 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1385 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (set->srcu){.+.+}-{0:0}: lock_sync kernel/locking/lockdep.c:5916 [inline] lock_sync+0x9d/0x110 kernel/locking/lockdep.c:5904 srcu_lock_sync include/linux/srcu.h:199 [inline] __synchronize_srcu+0xa2/0x300 kernel/rcu/srcutree.c:1481 blk_mq_wait_quiesce_done block/blk-mq.c:284 [inline] blk_mq_wait_quiesce_done block/blk-mq.c:281 [inline] blk_mq_quiesce_queue block/blk-mq.c:304 [inline] blk_mq_quiesce_queue+0x149/0x1c0 block/blk-mq.c:299 elevator_switch+0x17b/0x7e0 block/elevator.c:576 elevator_change+0x352/0x530 block/elevator.c:681 elevator_set_default+0x29e/0x360 block/elevator.c:754 blk_register_queue+0x48e/0x630 block/blk-sysfs.c:992 __add_disk+0x73f/0xe40 block/genhd.c:528 add_disk_fwnode+0x118/0x5c0 block/genhd.c:597 add_disk include/linux/blkdev.h:800 [inline] nbd_dev_add+0x77a/0xb10 drivers/block/nbd.c:2021 nbd_init+0x291/0x2b0 drivers/block/nbd.c:2729 do_one_initcall+0x11d/0x700 init/main.c:1347 do_initcall_level init/main.c:1409 [inline] do_initcalls init/main.c:1425 [inline] do_basic_setup init/main.c:1445 [inline] kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658 kernel_init+0x1f/0x1e0 init/main.c:1548 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (&q->elevator_lock){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a4/0x1bd0 kernel/locking/mutex.c:821 elevator_change+0x1bc/0x530 block/elevator.c:679 elevator_set_none+0x92/0xf0 block/elevator.c:769 blk_mq_elv_switch_none block/blk-mq.c:5101 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:5146 [inline] blk_mq_update_nr_hw_queues+0x4c1/0x15f0 block/blk-mq.c:5211 nbd_start_device+0x1a6/0xbd0 drivers/block/nbd.c:1526 nbd_genl_connect+0xff2/0x1a40 drivers/block/nbd.c:2276 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738 __sys_sendmsg+0x160/0x210 net/socket.c:2770 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&q->q_usage_counter(io)#62){++++}-{0:0}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 blk_alloc_queue+0x610/0x790 block/blk-core.c:504 blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4420 __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4467 nbd_dev_add+0x492/0xb10 drivers/block/nbd.c:1991 nbd_init+0x291/0x2b0 drivers/block/nbd.c:2729 do_one_initcall+0x11d/0x700 init/main.c:1347 do_initcall_level init/main.c:1409 [inline] do_initcalls init/main.c:1425 [inline] do_basic_setup init/main.c:1445 [inline] kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658 kernel_init+0x1f/0x1e0 init/main.c:1548 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #0 (fs_reclaim){+.+.}-{0:0}: check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165 check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __fs_reclaim_acquire mm/page_alloc.c:4329 [inline] fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4343 might_alloc include/linux/sched/mm.h:317 [inline] prepare_alloc_pages+0x166/0x5f0 mm/page_alloc.c:5048 __alloc_frozen_pages_noprof+0x1af/0x2dc0 mm/page_alloc.c:5293 __alloc_pages_noprof+0xb/0x110 mm/page_alloc.c:5338 __alloc_pages_node_noprof include/linux/gfp.h:291 [inline] alloc_pages_node_noprof include/linux/gfp.h:318 [inline] pcpu_alloc_pages mm/percpu-vm.c:95 [inline] pcpu_populate_chunk+0x118/0x990 mm/percpu-vm.c:285 pcpu_alloc_noprof+0x881/0x1ca0 mm/percpu.c:1876 snmp6_alloc_dev net/ipv6/addrconf.c:348 [inline] ipv6_add_dev+0x53a/0x1520 net/ipv6/addrconf.c:413 addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3679 notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2250 call_netdevice_notifiers_extack net/core/dev.c:2288 [inline] call_netdevice_notifiers net/core/dev.c:2302 [inline] register_netdevice+0x1998/0x25a0 net/core/dev.c:11477 veth_newlink+0x316/0xa00 drivers/net/veth.c:1861 rtnl_newlink_create net/core/rtnetlink.c:3905 [inline] __rtnl_newlink net/core/rtnetlink.c:4036 [inline] rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4151 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7068 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x48b/0x4e0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: fs_reclaim --> sk_lock-AF_INET6 --> pcpu_alloc_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(pcpu_alloc_mutex); lock(sk_lock-AF_INET6); lock(pcpu_alloc_mutex); lock(fs_reclaim); *** DEADLOCK *** 3 locks held by syz-executor/22497: #0: ffffffff8f9c1988 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline] #0: ffffffff8f9c1988 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:294 [inline] #0: ffffffff8f9c1988 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x113/0x2c0 net/core/rtnetlink.c:574 #1: ffffffff9063ab40 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff9063ab40 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff9063ab40 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8bb/0x2380 net/core/rtnetlink.c:4150 #2: ffffffff8e97e920 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0xe87/0x1ca0 mm/percpu.c:1788 stack backtrace: CPU: 0 UID: 0 PID: 22497 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175 check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165 check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 __fs_reclaim_acquire mm/page_alloc.c:4329 [inline] fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4343 might_alloc include/linux/sched/mm.h:317 [inline] prepare_alloc_pages+0x166/0x5f0 mm/page_alloc.c:5048 __alloc_frozen_pages_noprof+0x1af/0x2dc0 mm/page_alloc.c:5293 __alloc_pages_noprof+0xb/0x110 mm/page_alloc.c:5338 __alloc_pages_node_noprof include/linux/gfp.h:291 [inline] alloc_pages_node_noprof include/linux/gfp.h:318 [inline] pcpu_alloc_pages mm/percpu-vm.c:95 [inline] pcpu_populate_chunk+0x118/0x990 mm/percpu-vm.c:285 pcpu_alloc_noprof+0x881/0x1ca0 mm/percpu.c:1876 snmp6_alloc_dev net/ipv6/addrconf.c:348 [inline] ipv6_add_dev+0x53a/0x1520 net/ipv6/addrconf.c:413 addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3679 notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2250 call_netdevice_notifiers_extack net/core/dev.c:2288 [inline] call_netdevice_notifiers net/core/dev.c:2302 [inline] register_netdevice+0x1998/0x25a0 net/core/dev.c:11477 veth_newlink+0x316/0xa00 drivers/net/veth.c:1861 rtnl_newlink_create net/core/rtnetlink.c:3905 [inline] __rtnl_newlink net/core/rtnetlink.c:4036 [inline] rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4151 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7068 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x48b/0x4e0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1dfb75d68e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007fff3220e7f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055558be68500 RCX: 00007f1dfb75d68e RDX: 0000000000000084 RSI: 00007f1dfc544670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fff3220e874 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f1dfc544670 R15: 0000000000000000