INFO: task syz.0.71:6115 blocked for more than 143 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.71 state:D stack:21568 pid:6115 tgid:6078 ppid:5736 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] do_lock_mount+0x112/0x3a0 fs/namespace.c:2607 lock_mount fs/namespace.c:2649 [inline] do_loopback+0x2be/0x520 fs/namespace.c:2772 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4055 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032 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: 0033:0x7f2e7bb7def9 RSP: 002b:00007f2e7c985038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2e7bd36058 RCX: 00007f2e7bb7def9 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000380 RBP: 00007f2e7bbf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2e7bd36058 R15: 00007ffc871d6fe8 INFO: task syz.0.71:6123 blocked for more than 144 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.71 state:D stack:18608 pid:6123 tgid:6078 ppid:5736 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3933 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1506 [inline] __se_sys_creat fs/open.c:1500 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1500 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: 0033:0x7f2e7bb7def9 RSP: 002b:00007f2e7c964038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f2e7bd36130 RCX: 00007f2e7bb7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340 RBP: 00007f2e7bbf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2e7bd36130 R15: 00007ffc871d6fe8 INFO: task syz.0.71:6124 blocked for more than 145 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.71 state:D stack:26896 pid:6124 tgid:6078 ppid:5736 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3933 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1506 [inline] __se_sys_creat fs/open.c:1500 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1500 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: 0033:0x7f2e7bb7def9 RSP: 002b:00007f2e7c943038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f2e7bd36208 RCX: 00007f2e7bb7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140 RBP: 00007f2e7bbf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2e7bd36208 R15: 00007ffc871d6fe8 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701 3 locks held by kworker/u8:2/35: #0: ffff88802faf2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88802faf2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000ab7d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000ab7d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4736 3 locks held by kworker/u8:3/52: #0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000bc7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000bc7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 3 locks held by kworker/u8:6/1062: #0: ffff88801d28f948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801d28f948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003ac7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90003ac7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562 2 locks held by kworker/u8:9/2948: 5 locks held by kworker/u8:10/2966: #0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90009847d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90009847d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8faa3990 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580 #3: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:11930 #4: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #4: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:965 1 lock held by dhcpcd/4887: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1aa0 net/ipv4/devinet.c:1097 2 locks held by getty/4970: #0: ffff8880308060a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 3 locks held by kworker/u9:3/5229: #0: ffff888057f9c148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888057f9c148 ((wq_completion)hci6){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003d27d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90003d27d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888053258d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327 5 locks held by syz.0.71/6079: #0: ffff888024c4e420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63 #2: ffff88806b400a18 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16c/0x2c0 fs/bcachefs/io_misc.c:290 #3: ffff88806b4042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline] #3: ffff88806b4042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline] #3: ffff88806b4042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3200 #4: ffff88806b426690 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1197 1 lock held by syz.0.71/6115: #0: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #0: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: do_lock_mount+0x112/0x3a0 fs/namespace.c:2607 2 locks held by syz.0.71/6123: #0: ffff888024c4e420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 2 locks held by syz.0.71/6124: #0: ffff888024c4e420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff88807e3c08a8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 4 locks held by bch-reclaim/loo/6106: 1 lock held by syz.1.99/6355: 2 locks held by syz.0.173/6489: #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.1.197/6654: #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.259/7190: #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.2.278/7455: #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888024c4e0e0 (&type->s_umount_key#108){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888024c4c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 1 lock held by syz-executor/7523: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48c/0x2400 drivers/net/tun.c:3121 1 lock held by syz-executor/7568: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 1 lock held by syz.4.300/7600: #0: ffff888025135b60 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x8f0 drivers/block/loop.c:1252 4 locks held by syz.4.300/7601: #0: ffff8880587b4420 (sb_writers#26){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2930 [inline] #0: ffff8880587b4420 (sb_writers#26){.+.+}-{0:0}, at: vfs_writev+0x2d1/0xba0 fs/read_write.c:1062 #1: ffff88807e02e430 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff88807e02e430 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: exfat_file_write_iter+0x9e/0x420 fs/exfat/file.c:573 #2: ffff88807e9300e0 (&sbi->s_lock){+.+.}-{3:3}, at: exfat_get_block+0x1b7/0x23c0 fs/exfat/inode.c:293 #3: ffff88807e930170 (&sbi->bitmap_lock#2){+.+.}-{3:3}, at: exfat_alloc_cluster+0x114/0xc00 fs/exfat/fatent.c:327 3 locks held by syz.4.300/7602: #0: ffff8880587b4420 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff888062319cb0 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff888062319cb0 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: open_last_lookups fs/namei.c:3691 [inline] #1: ffff888062319cb0 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: path_openat+0x89a/0x3590 fs/namei.c:3930 #2: ffff88807e9300e0 (&sbi->s_lock){+.+.}-{3:3}, at: exfat_lookup+0x140/0x18f0 fs/exfat/namei.c:700 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:check_wait_context kernel/locking/lockdep.c:4846 [inline] RIP: 0010:__lock_acquire+0x819/0x2050 kernel/locking/lockdep.c:5149 Code: 83 38 00 0f 94 c3 00 db 80 c3 02 48 8b 44 24 38 0f b6 04 10 84 c0 0f 85 b0 12 00 00 89 5c 24 08 45 3b 65 00 0f 8d ad 02 00 00 <4d> 63 f4 4b 8d 04 b6 48 8b 4c 24 30 4c 8d ac c1 00 0b 00 00 48 c7 RSP: 0018:ffffc90000106990 EFLAGS: 00000097 RAX: 0000000000000000 RBX: 0000000000080004 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: ffff88801cec46e0 RDI: 0000000000000014 RBP: 00000000ffffffff R08: ffffffff93ff9847 R09: 1ffffffff27ff308 R10: dffffc0000000000 R11: fffffbfff27ff309 R12: 0000000000000000 R13: ffff88801cec46d8 R14: 1ffff110039d88f4 R15: ffff88801cec47a0 FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f58040ea866 CR3: 000000000e534000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 __debug_check_no_obj_freed lib/debugobjects.c:978 [inline] debug_check_no_obj_freed+0x234/0x580 lib/debugobjects.c:1019 slab_free_hook mm/slub.c:2217 [inline] slab_free mm/slub.c:4474 [inline] kfree+0x10f/0x360 mm/slub.c:4595 ieee80211_inform_bss+0xbb2/0x1080 net/mac80211/scan.c:160 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xec1/0x2090 net/wireless/scan.c:2333 cfg80211_inform_bss_data+0x3ce/0x5e70 net/wireless/scan.c:3184 cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3279 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline] ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606 ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline] ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1657 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x870/0xd30 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244