INFO: task syz.8.1116:10442 blocked for more than 151 seconds. Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.1116 state:D stack:0 pid:10442 tgid:10441 ppid:9967 task_flags:0x400140 flags:0x00000019 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 bio_put_slab block/bio.c:140 [inline] bioset_exit+0x1f8/0x3dc block/bio.c:1664 __bch2_fs_free fs/bcachefs/super.c:588 [inline] bch2_fs_release+0x4e4/0x72c fs/bcachefs/super.c:618 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2b0/0x438 lib/kobject.c:737 bch2_fs_free+0x308/0x378 fs/bcachefs/super.c:681 bch2_fs_alloc fs/bcachefs/super.c:981 [inline] bch2_fs_open+0x164c/0x22e8 fs/bcachefs/super.c:2210 bch2_fs_get_tree+0x384/0xf30 fs/bcachefs/fs.c:2491 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by kthreadd/2: 4 locks held by kworker/0:0/9: 2 locks held by kworker/0:1/11: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/14: 2 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/44: 3 locks held by kworker/u8:3/45: 3 locks held by kworker/R-cfg80/61: #0: ffff0000c30da948 ((wq_completion)cfg80211){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff800097eb7ba0 ((work_completion)(&(&rdev->dfs_update_channels_wk)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 6 locks held by kworker/u8:4/133: 3 locks held by kworker/u8:5/501: 3 locks held by kworker/u8:6/2104: 3 locks held by kworker/u8:7/2199: 2 locks held by kworker/0:2/2297: 3 locks held by kworker/R-ipv6_/4138: #0: ffff0000d1d01148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a0427ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/1:2/4154: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a0fa7bc0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4220: 1 lock held by klogd/6092: 1 lock held by udevd/6103: 2 locks held by getty/6252: #0: ffff0000d25770a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b60b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 2 locks held by syz-executor/6476: 3 locks held by syz-executor/6489: 1 lock held by syz-executor/6495: 2 locks held by kworker/0:3/6499: 2 locks held by kworker/0:4/6538: 2 locks held by kworker/0:5/6539: 2 locks held by kworker/0:7/6566: 1 lock held by syz-executor/6757: 6 locks held by kworker/u8:8/6936: 3 locks held by kworker/u8:9/7221: 3 locks held by kworker/u8:10/10142: 1 lock held by syz.8.1116/10442: #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bio_put_slab block/bio.c:140 [inline] #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x1f8/0x3dc block/bio.c:1664 1 lock held by syz.6.1122/10460: #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bio_put_slab block/bio.c:140 [inline] #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x1f8/0x3dc block/bio.c:1664 2 locks held by rm/10537: 3 locks held by kworker/u8:11/10539: 3 locks held by kworker/u8:12/10540: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009c9d7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by syz-executor/10542: 3 locks held by kworker/u8:13/10543: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bc87bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 =============================================