INFO: task syz-executor.2:10942 blocked for more than 143 seconds. Not tainted 6.7.0-rc3-syzkaller-g2cc14f52aeb7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:10942 tgid:10938 ppid:6143 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 io_schedule+0x8c/0x12c kernel/sched/core.c:8998 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1273 folio_wait_bit+0x30/0x40 mm/filemap.c:1412 folio_wait_writeback+0x14c/0x3bc mm/page-writeback.c:3065 migrate_folio_unmap mm/migrate.c:1184 [inline] migrate_pages_batch+0xc1c/0x25b0 mm/migrate.c:1673 migrate_pages_sync mm/migrate.c:1866 [inline] migrate_pages+0x1bf8/0x3114 mm/migrate.c:1948 do_mbind mm/mempolicy.c:1344 [inline] kernel_mbind mm/mempolicy.c:1486 [inline] __do_sys_mbind mm/mempolicy.c:1560 [inline] __se_sys_mbind mm/mempolicy.c:1556 [inline] __arm64_sys_mbind+0x1410/0x18e8 mm/mempolicy.c:1556 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 INFO: task segctord:10952 blocked for more than 143 seconds. Not tainted 6.7.0-rc3-syzkaller-g2cc14f52aeb7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:segctord state:D stack:0 pid:10952 tgid:10952 ppid:2 flags:0x00000008 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 io_schedule+0x8c/0x12c kernel/sched/core.c:8998 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1273 __folio_lock+0x2c/0x3c mm/filemap.c:1611 folio_lock include/linux/pagemap.h:1031 [inline] nilfs_lookup_dirty_data_buffers+0x2b0/0x7e8 fs/nilfs2/segment.c:727 nilfs_segctor_scan_file+0x1e4/0xcdc fs/nilfs2/segment.c:1084 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1206 [inline] nilfs_segctor_collect fs/nilfs2/segment.c:1533 [inline] nilfs_segctor_do_construct+0x16ec/0x6560 fs/nilfs2/segment.c:2081 nilfs_segctor_construct+0x110/0x768 fs/nilfs2/segment.c:2415 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2523 [inline] nilfs_segctor_thread+0x3d4/0xd74 fs/nilfs2/segment.c:2606 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e6b4740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300 3 locks held by udevd/5715: 2 locks held by getty/5855: #0: ffff0000d225e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094e702f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 4 locks held by kworker/0:5/6214: #0: ffff0001b4146d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline] #0: ffff0001b4146d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1349 [inline] #0: ffff0001b4146d98 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1663 [inline] #0: ffff0001b4146d98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2dc/0x2360 kernel/sched/core.c:6604 #1: ffff0001b4132e48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:988 #2: ffff0001b414e298 (&ACCESS_PRIVATE(sdp, lock)){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline] #2: ffff0001b414e298 (&ACCESS_PRIVATE(sdp, lock)){....}-{2:2}, at: srcu_invoke_callbacks+0x2d4/0x3d8 kernel/rcu/srcutree.c:1751 #3: ffff0000c512dcd0 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:518 [inline] #3: ffff0000c512dcd0 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb0/0xf50 kernel/sched/core.c:4226 1 lock held by segctord/10952: #0: ffff0000d881c2a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x178/0x33c fs/nilfs2/segment.c:357 3 locks held by udevd/11060: 2 locks held by kworker/u4:19/13254: 2 locks held by syz-executor.1/15709: 1 lock held by syz-executor.3/15734: 1 lock held by syz-executor.3/15737: 3 locks held by syz-executor.3/15739: #0: ffff800090f5f9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f5f9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 #1: ffff0000d60b0d40 (team->team_lock_key#2){+.+.}-{3:3}, at: team_add_slave+0xac/0x2064 drivers/net/team/team.c:1972 #2: ffff80008e6ba0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #2: ffff80008e6ba0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ac/0x728 kernel/rcu/tree_exp.h:996 =============================================