INFO: task syz.6.293:8142 blocked for more than 143 seconds. Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.293 state:D stack:0 pid:8142 tgid:8140 ppid:7628 task_flags:0x400140 flags:0x00000011 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_find_or_create_slab block/bio.c:122 [inline] bioset_init+0x1d0/0x654 block/bio.c:1705 bch2_fs_alloc fs/bcachefs/super.c:894 [inline] bch2_fs_open+0x1884/0x22e8 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: 3 locks held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 3 locks held by kworker/1:0/24: 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: 2 locks held by kworker/u8:3/45: 3 locks held by kworker/u8:4/187: 3 locks held by kworker/u8:5/534: 3 locks held by kworker/u8:6/565: 3 locks held by kworker/u8:7/646: 3 locks held by kworker/u8:8/701: 3 locks held by kworker/u8:9/777: 2 locks held by kworker/1:2/1804: 3 locks held by kworker/R-ipv6_/4141: #0: ffff0000d297e148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a04e7ba0 ((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 6 locks held by kworker/R-bat_e/4222: 1 lock held by klogd/6094: 1 lock held by udevd/6105: 1 lock held by crond/6234: 2 locks held by getty/6257: #0: ffff0000cd3b20a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b5be2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 4 locks held by kworker/1:3/6480: 1 lock held by syz-executor/6490: #0: ffff0000cd3d00e0 (&type->s_umount_key#69){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000cd3d00e0 (&type->s_umount_key#69){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000cd3d00e0 (&type->s_umount_key#69){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 3 locks held by syz-executor/6491: 1 lock held by syz-executor/6494: 4 locks held by kworker/1:4/6499: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a21b7bc0 (reg_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: ffff0000dfcf0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000dfcf0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 3 locks held by kworker/0:3/6542: 3 locks held by kworker/0:5/6544: 4 locks held by kworker/0:6/6573: 2 locks held by kworker/1:7/6624: 2 locks held by kworker/1:8/6632: 3 locks held by syz-executor/6904: 3 locks held by kworker/u8:10/6951: 1 lock held by udevd/7868: 1 lock held by udevd/7935: 1 lock held by syz.6.293/8142: #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bio_find_or_create_slab block/bio.c:122 [inline] #0: ffff80008fc26ea8 (bio_slab_lock){+.+.}-{4:4}, at: bioset_init+0x1d0/0x654 block/bio.c:1705 3 locks held by dhcpcd-run-hook/8176: 3 locks held by kworker/u8:11/8187: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009c5b7bc0 ((crda_timeout).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/u8:12/8188: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bf87bc0 ((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 kworker/u8:13/8189: 1 lock held by kworker/u8:14/8191: 2 locks held by syz-executor/8192: =============================================