INFO: task syz-executor:7296 blocked for more than 143 seconds. Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:7296 tgid:7296 ppid:1 flags:0x00000009 Call trace: __switch_to+0x420/0x6dc arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5188 [inline] __schedule+0x13d4/0x2418 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6621 bch2_fs_read_only+0x87c/0xf14 fs/bcachefs/super.c:346 __bch2_fs_stop+0x100/0x510 fs/bcachefs/super.c:618 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:1826 generic_shutdown_super+0x128/0x2b8 fs/super.c:642 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2054 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 2 locks held by kworker/u8:0/11: 1 lock held by khungtaskd/31: #0: ffff80008f74dfa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:325 3 locks held by kworker/u8:4/134: 5 locks held by kworker/u8:5/177: #0: ffff0000c1869948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b697c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff80009242b950 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #4: ffff0000c5e19428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_netns_pre_exit+0xbc/0x1d4 drivers/net/wireguard/device.c:419 3 locks held by kworker/u8:7/2137: #0: ffff0000d1d49148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009fc17c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6165: #0: ffff0000d24c20a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b50e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:3/6409: 4 locks held by kworker/u8:8/6553: #0: ffff0000eed77948 ((wq_completion)btree_node_rewrite){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009cdb7c20 ((work_completion)(&a->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000e6d042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150 #3: ffff0000e6d26690 (&c->gc_lock){++++}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1197 2 locks held by syz-executor/7296: #0: ffff0000f33220e0 (&type->s_umount_key#83){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f33220e0 (&type->s_umount_key#83){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f33220e0 (&type->s_umount_key#83){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff0000e6d00278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xf8/0x510 fs/bcachefs/super.c:617 3 locks held by kworker/u8:12/7615: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009db37c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by bch-reclaim/loo/8178: 3 locks held by kworker/1:6/8545: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009b7b7c20 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff80008f7531c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x58/0x534 kernel/rcu/tree.c:4486 3 locks held by syz-executor/9257: #0: ffff800092498dd0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092498c88 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092498c88 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092498c88 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 #2: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by kworker/u8:16/9512: 1 lock held by syz-executor/9647: #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092437ee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 3 locks held by syz.3.453/9674: #0: ffff0000cfc3a070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline] #0: ffff0000cfc3a070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig fs/fsopen.c:345 [inline] #0: ffff0000cfc3a070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __arm64_sys_fsconfig+0x7a8/0xca0 fs/fsopen.c:345 #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: vfs_cmd_reconfigure fs/fsopen.c:262 [inline] #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: vfs_fsconfig_locked fs/fsopen.c:292 [inline] #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:473 [inline] #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: __se_sys_fsconfig fs/fsopen.c:345 [inline] #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: __arm64_sys_fsconfig+0x904/0xca0 fs/fsopen.c:345 #2: ffff0000ffd06b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1784 [inline] #2: ffff0000ffd06b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: __ext4_remount fs/ext4/super.c:6451 [inline] #2: ffff0000ffd06b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_reconfigure+0x8b4/0x2bf4 fs/ext4/super.c:6711 2 locks held by syz.3.453/9675: #0: ffff0000f05d60e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f05d60e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f05d60e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff0000ceea20e0 (&type->s_umount_key#31){++++}-{3:3}, at: ovl_sync_fs+0x114/0x174 fs/overlayfs/super.c:231 5 locks held by syz.1.457/9669: =============================================