INFO: task syz.0.1249:10847 blocked for more than 146 seconds. Not tainted 6.16.0-rc1-syzkaller-g39dfc971e42d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1249 state:D stack:0 pid:10847 tgid:10846 ppid:6517 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 bio_find_or_create_slab block/bio.c:122 [inline] bioset_init+0x1d0/0x654 block/bio.c:1799 bch2_fs_alloc fs/bcachefs/super.c:988 [inline] bch2_fs_open+0x168c/0x1fa4 fs/bcachefs/super.c:2404 bch2_fs_get_tree+0x360/0xfd0 fs/bcachefs/fs.c:2473 vfs_get_tree+0x90/0x28c fs/super.c:1802 do_new_mount+0x228/0x814 fs/namespace.c:3885 path_mount+0x5b4/0xde0 fs/namespace.c:4209 do_mount fs/namespace.c:4222 [inline] __do_sys_mount fs/namespace.c:4433 [inline] __se_sys_mount fs/namespace.c:4410 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4410 __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/u8:0/12: 4 locks held by kworker/u8:1/13: 5 locks held by kworker/1:0/24: 1 lock held by khungtaskd/32: #0: ffff80008f819e40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 3 locks held by pr/ttyAMA0/43: 3 locks held by kworker/u8:4/66: 3 locks held by kworker/u8:5/151: 3 locks held by kworker/u8:6/272: 3 locks held by kworker/u8:7/292: 3 locks held by kworker/u8:8/305: 3 locks held by kworker/u8:9/354: 3 locks held by kworker/u8:10/356: 2 locks held by kworker/1:2/2317: 3 locks held by kworker/R-ipv6_/4166: #0: ffff0000d24a5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a2457ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092872028 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4247: 1 lock held by klogd/6123: 2 locks held by udevd/6134: 1 lock held by dhcpcd/6189: #0: ffff800092872028 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by crond/6263: 2 locks held by getty/6282: #0: ffff0000d65d10a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b9be2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6506: 3 locks held by udevd/6511: 2 locks held by kworker/1:4/6587: 2 locks held by kworker/1:5/6619: 2 locks held by kworker/1:6/6644: 4 locks held by udevd/6693: 2 locks held by udevd/6803: 2 locks held by syz-executor/7422: 3 locks held by syz-executor/9352: #0: ffff80008ff4c128 (bio_slab_lock){+.+.}-{4:4}, at: bio_put_slab block/bio.c:140 [inline] #0: ffff80008ff4c128 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x1f8/0x3dc block/bio.c:1758 #1: ffff80008f6b2e10 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x48/0x178 mm/slab_common.c:510 #2: ffff80008f8f7c78 (slab_mutex){+.+.}-{4:4}, at: kmem_cache_destroy+0x58/0x178 mm/slab_common.c:511 2 locks held by syz-executor/9912: 3 locks held by kworker/1:7/10217: 1 lock held by syz.0.1249/10847: #0: ffff80008ff4c128 (bio_slab_lock){+.+.}-{4:4}, at: bio_find_or_create_slab block/bio.c:122 [inline] #0: ffff80008ff4c128 (bio_slab_lock){+.+.}-{4:4}, at: bioset_init+0x1d0/0x654 block/bio.c:1799 2 locks held by kworker/u8:11/10997: 4 locks held by kworker/u8:12/10998: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009bf47bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092872028 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000d75d0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000d75d0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2471 [inline] #3: ffff0000d75d0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x11c/0xd88 net/wireless/reg.c:2486 2 locks held by kworker/u8:13/10999: =============================================