INFO: task jfsCommit:112 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:27656 pid:112 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 io_schedule+0x80/0xd0 kernel/sched/core.c:9022 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline] lock_metapage+0x1ec/0x310 fs/jfs/jfs_metapage.c:64 __get_metapage+0x4ca/0xfa0 fs/jfs/jfs_metapage.c:639 diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672 diFree+0x978/0x2c10 fs/jfs/jfs_imap.c:959 jfs_evict_inode+0x32b/0x440 fs/jfs/inode.c:162 evict+0x486/0x870 fs/inode.c:705 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline] jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 INFO: task jfsCommit:113 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:27272 pid:113 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699 schedule+0xbd/0x170 kernel/sched/core.c:6773 io_schedule+0x80/0xd0 kernel/sched/core.c:9022 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline] lock_metapage+0x1ec/0x310 fs/jfs/jfs_metapage.c:64 __get_metapage+0x4ca/0xfa0 fs/jfs/jfs_metapage.c:639 diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672 diFree+0x978/0x2c10 fs/jfs/jfs_imap.c:959 jfs_evict_inode+0x32b/0x440 fs/jfs/inode.c:162 evict+0x486/0x870 fs/inode.c:705 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline] jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8cd2fee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] #0: ffffffff8cd2fee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline] #0: ffffffff8cd2fee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633 2 locks held by kworker/u4:2/42: 2 locks held by jfsCommit/112: #0: ffff888077228920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2a0/0x2c10 fs/jfs/jfs_imap.c:889 #1: ffff88805ed566f8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2be/0x2c10 fs/jfs/jfs_imap.c:894 2 locks held by jfsCommit/113: #0: ffff88801c2f0920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2a0/0x2c10 fs/jfs/jfs_imap.c:889 #1: ffff88805ed52638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2be/0x2c10 fs/jfs/jfs_imap.c:894 7 locks held by kworker/0:3/1189: #0: ffff888147e4dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888147e4dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc90004bafd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc90004bafd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #2: ffff888142b53190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline] #2: ffff888142b53190 (&dev->mutex){....}-{3:3}, at: hub_event+0x185/0x49c0 drivers/usb/core/hub.c:5861 #3: ffff888062a4b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline] #3: ffff888062a4b190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10b/0x8a0 drivers/usb/core/hub.c:2306 #4: ffff88805fbd4160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline] #4: ffff88805fbd4160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88805fbd4160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb6/0x7a0 drivers/base/dd.c:1292 #5: ffff88802e605a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline] #5: ffff88802e605a20 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #5: ffff88802e605a20 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb6/0x7a0 drivers/base/dd.c:1292 #6: ffffffff8da78568 (input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x2ee/0x5f0 drivers/input/input.c:2293 2 locks held by getty/5547: #0: ffff88814d9700a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000328b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217 2 locks held by syz-executor/5784: #0: ffff888030f2e0e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888030f2e0e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888030f2e0e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor/5793: #0: ffff88807bce80e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807bce80e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807bce80e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 2 locks held by syz-executor/5794: #0: ffff8880773760e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880773760e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880773760e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6095: #0: ffff88807ab8c0e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807ab8c0e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807ab8c0e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 2 locks held by kworker/0:4/6097: #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #0: ffff888017872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 #1: ffffc900045bfd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline] #1: ffffc900045bfd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711 2 locks held by syz.5.47/6256: #0: ffff8880778e60e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880778e60e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880778e60e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6260: #0: ffff88805ba360e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88805ba360e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88805ba360e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6310: #0: ffff8880624700e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880624700e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880624700e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6543: #0: ffff88806ac460e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88806ac460e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88806ac460e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 #1: ffffffff8d1478e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor/6588: #0: ffff88802a5980e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff88802a5980e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88802a5980e0 (&type->s_umount_key#55){++++}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513 3 locks held by syz-executor/7066: #0: ffff88802fd40e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline] #0: ffff88802fd40e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709 #1: ffff88802fd400b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5273 #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2011 [inline] #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540 2 locks held by syz.1.174/7391: #0: ffff88805d81e418 (sb_writers#3){.+.+}-{0:0}, at: do_sendfile+0x5b9/0xf70 fs/read_write.c:1253 #1: ffff8880773760e0 (&type->s_umount_key#55){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #1: ffff8880773760e0 (&type->s_umount_key#55){++++}-{3:3}, at: super_lock+0x167/0x360 fs/super.c:117 5 locks held by syz-executor/7576: #0: ffff888077ac4e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline] #0: ffff888077ac4e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709 #1: ffff888077ac40b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5273 #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2011 [inline] #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540 #3: ffff888077b35338 (&conn->lock#2){+.+.}-{3:3}, at: l2cap_conn_del+0x70/0x660 net/bluetooth/l2cap_core.c:1763 #4: ffffffff8cd358b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #4: ffffffff8cd358b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x360/0x830 kernel/rcu/tree_exp.h:1004 3 locks held by syz.2.228/7753: #0: ffff888079ffce70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline] #0: ffff888079ffce70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709 #1: ffff888079ffc0b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5273 #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2011 [inline] #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540 3 locks held by syz.3.229/7773: #0: ffff88806b624e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline] #0: ffff88806b624e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709 #1: ffff88806b6240b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5273 #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2011 [inline] #2: ffffffff8e1296c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540 1 lock held by dhcpcd/7788: #0: ffff88805a068e20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a068e20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a068e20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7789: #0: ffff888023786130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff888023786130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7790: #0: ffff88802fe06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff88802fe06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7791: #0: ffff88802f2a0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff88802f2a0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7792: #0: ffff8880316fa130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff8880316fa130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7793: #0: ffff88805a2bd020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a2bd020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a2bd020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7794: #0: ffff88807b732130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff88807b732130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7795: #0: ffff88805a36ee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a36ee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a36ee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7796: #0: ffff8880781df420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff8880781df420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff8880781df420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7797: #0: ffff88805a36d620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a36d620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a36d620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7798: #0: ffff8880781ddc20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff8880781ddc20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff8880781ddc20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7799: #0: ffff88807e6e4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1767 [inline] #0: ffff88807e6e4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcc0 net/packet/af_packet.c:3258 1 lock held by dhcpcd/7800: #0: ffff88805a369420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a369420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a369420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7801: #0: ffff88805a0d2c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a0d2c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a0d2c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7802: #0: ffff8880781de820 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff8880781de820 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff8880781de820 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7803: #0: ffff88805a0d7420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a0d7420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a0d7420 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7804: #0: ffff88805a2bee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805a2bee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805a2bee20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7805: #0: ffff8880781fa020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff8880781fa020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff8880781fa020 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7806: #0: ffff88801fc9e220 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88801fc9e220 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88801fc9e220 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7807: #0: ffff8880781fa620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff8880781fa620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff8880781fa620 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd/7808: #0: ffff88805ee2fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #0: ffff88805ee2fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff88805ee2fa20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1421 1 lock held by dhcpcd-run-hook/7823: #0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:566 1 lock held by sed/7828: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf41/0xf80 kernel/hung_task.c:379 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6097 Comm: kworker/0:4 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x60 kernel/kcov.c:216 Code: 48 8b 3d dc ef c4 0c 48 89 de 5b e9 13 9e 56 00 cc cc cc f3 0f 1e fa 48 8b 04 24 65 48 8b 0d 30 15 7e 7e 65 8b 15 31 15 7e 7e <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 RSP: 0018:ffffc90000007598 EFLAGS: 00000206 RAX: ffffffff859cf813 RBX: 0000000000000028 RCX: ffff88802325da00 RDX: 0000000080000101 RSI: 000000000000000c RDI: 0000000000000000 RBP: ffffc90000007738 R08: ffff888076c78183 R09: 1ffff1100ed8f030 R10: dffffc0000000000 R11: ffffed100ed8f031 R12: 000000000000000c R13: 0000000000000000 R14: 0000000000000008 R15: 0000000000000028 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f150614fe9c CR3: 000000000cb30000 CR4: 00000000003506f0 Call Trace: pskb_may_pull_reason include/linux/skbuff.h:2669 [inline] pskb_may_pull include/linux/skbuff.h:2685 [inline] prepare_skb_header drivers/net/wireguard/receive.c:74 [inline] wg_packet_receive+0x383/0x25c0 drivers/net/wireguard/receive.c:544 wg_receive+0x75/0xa0 drivers/net/wireguard/socket.c:326 udpv6_queue_rcv_one_skb+0x1716/0x1930 net/ipv6/udp.c:729 udp6_unicast_rcv_skb+0x223/0x370 net/ipv6/udp.c:931 ip6_protocol_deliver_rcu+0xb7a/0x13c0 net/ipv6/ip6_input.c:438 ip6_input_finish+0x184/0x2c0 net/ipv6/ip6_input.c:483 NF_HOOK+0x303/0x390 include/linux/netfilter.h:304 NF_HOOK+0x303/0x390 include/linux/netfilter.h:304 __netif_receive_skb_one_core net/core/dev.c:5608 [inline] __netif_receive_skb+0xcc/0x290 net/core/dev.c:5722 process_backlog+0x380/0x6e0 net/core/dev.c:6050 __napi_poll+0xc0/0x460 net/core/dev.c:6612 napi_poll net/core/dev.c:6679 [inline] net_rx_action+0x5ea/0xbf0 net/core/dev.c:6815 handle_softirqs+0x280/0x820 kernel/softirq.c:578 do_softirq+0xed/0x180 kernel/softirq.c:479 __local_bh_enable_ip+0x178/0x1c0 kernel/softirq.c:406 wg_socket_send_skb_to_peer+0x16b/0x1c0 drivers/net/wireguard/socket.c:184 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1c8/0x7c0 drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293