INFO: task syz.2.19:4434 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.19 state:D stack:27648 pid: 4434 ppid: 4333 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11bb/0x4390 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc46/0x11f0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:832 [inline] blk_ioctl_zeroout block/ioctl.c:183 [inline] blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 blkdev_ioctl+0x295/0x690 block/ioctl.c:598 block_ioctl+0xac/0xf0 block/fops.c:496 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f17a1dc8ec9 RSP: 002b:00007fffd5bbb8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f17a201ffa0 RCX: 00007f17a1dc8ec9 RDX: 0000200000000040 RSI: 000000000000127f RDI: 0000000000000003 RBP: 00007f17a1e4bf91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f17a201ffa0 R14: 00007f17a201ffa0 R15: 0000000000000003 INFO: task syz.1.18:4435 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:27456 pid: 4435 ppid: 4330 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11bb/0x4390 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc46/0x11f0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:832 [inline] blk_ioctl_zeroout block/ioctl.c:183 [inline] blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 blkdev_ioctl+0x295/0x690 block/ioctl.c:598 block_ioctl+0xac/0xf0 block/fops.c:496 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff4b632dec9 RSP: 002b:00007ffca3467838 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff4b6584fa0 RCX: 00007ff4b632dec9 RDX: 0000200000000040 RSI: 000000000000127f RDI: 0000000000000003 RBP: 00007ff4b63b0f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff4b6584fa0 R14: 00007ff4b6584fa0 R15: 0000000000000003 INFO: task syz.4.21:4436 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.21 state:D stack:27648 pid: 4436 ppid: 4336 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11bb/0x4390 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc46/0x11f0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:832 [inline] blk_ioctl_zeroout block/ioctl.c:183 [inline] blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 blkdev_ioctl+0x295/0x690 block/ioctl.c:598 block_ioctl+0xac/0xf0 block/fops.c:496 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f3f8d154ec9 RSP: 002b:00007ffe20461958 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3f8d3abfa0 RCX: 00007f3f8d154ec9 RDX: 0000200000000040 RSI: 000000000000127f RDI: 0000000000000003 RBP: 00007f3f8d1d7f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3f8d3abfa0 R14: 00007f3f8d3abfa0 R15: 0000000000000003 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8c11c660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 4 locks held by kworker/u4:1/144: #0: ffff8880b913a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475 #1: ffff8880b9127888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4d6/0x810 kernel/sched/psi.c:891 #2: ffff888049be4d40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1036 [inline] #2: ffff888049be4d40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0xa0/0x10b0 net/mac80211/ibss.c:1685 #3: ffff88804bb317b0 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_sta_expire net/mac80211/ibss.c:1259 [inline] #3: ffff88804bb317b0 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_sta_merge_ibss net/mac80211/ibss.c:1302 [inline] #3: ffff88804bb317b0 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x569/0x10b0 net/mac80211/ibss.c:1713 3 locks held by kworker/u4:2/154: 2 locks held by getty/3949: #0: ffff88802c6b3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc90002d032e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158 3 locks held by kworker/1:3/4286: #0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1 #1: ffffc90002fffd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285 #2: ffff88804ee53240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x271/0x3240 drivers/net/netdevsim/fib.c:1480 3 locks held by kworker/1:6/4304: #0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1 #1: ffffc900030efd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285 #2: ffff8880185e2240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x271/0x3240 drivers/net/netdevsim/fib.c:1480 3 locks held by syz.3.20/4431: 1 lock held by syz.2.19/4434: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.1.18/4435: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.4.21/4436: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.5.22/4517: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.8.25/4563: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.7.24/4566: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.6.23/4570: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.9.26/4571: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.0.27/4592: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.1.28/4662: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.2.29/4667: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.3.30/4673: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.4.31/4680: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.5.32/4700: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.8.34/4793: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.7.33/4800: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.6.35/4808: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.9.36/4828: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.0.37/4829: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.1.38/4877: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.2.39/4894: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.3.40/4916: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.4.41/4935: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.5.42/4946: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz.8.43/4976: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 1 lock held by syz-executor/5002: #0: ffffffff8d238048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d238048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x974/0xe60 net/core/rtnetlink.c:5647 1 lock held by syz.7.44/5010: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 2 locks held by syz-executor/5019: #0: ffffffff8d238048 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d238048 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x974/0xe60 net/core/rtnetlink.c:5647 #1: ffffffff8c1210e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8c1210e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x347/0x6b0 kernel/rcu/tree_exp.h:845 1 lock held by syz.6.45/5043: #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline] #0: ffff888016c6a0f8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x17d6/0x1c70 block/ioctl.c:487 2 locks held by syz-executor/5054: #0: ffffffff8d22c3d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x32e/0x5b0 net/core/net_namespace.c:499 #1: ffffffff8d238048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10519 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe0f/0xe50 kernel/hung_task.c:369 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:bvec_iter_advance include/linux/bvec.h:115 [inline] RIP: 0010:bio_advance_iter include/linux/bio.h:149 [inline] RIP: 0010:bio_advance+0x264/0x470 block/bio.c:1261 Code: 22 07 b9 fd 45 01 e6 74 61 44 89 e8 48 c1 e0 04 4d 8d 64 07 08 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 25 41 8b 2c 24 44 89 f7 89 ee e8 ea 04 b9 fd 45 89 f4 41 RSP: 0018:ffffc90000da7b88 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffff8880479de830 RCX: dffffc0000000000 RDX: 0000000000000100 RSI: 0000000000001000 RDI: 000000000001ae00 RBP: 0000000000001000 R08: dffffc0000000000 R09: fffffbfff1ad323e R10: fffffbfff1ad323e R11: 1ffffffff1ad323d R12: ffff888074eb3368 R13: 0000000000000006 R14: 0000000000019e00 R15: ffff888074eb3300 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80e1977d68 CR3: 0000000059f01000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: req_bio_endio block/blk-core.c:246 [inline] blk_update_request+0x729/0x1200 block/blk-core.c:1441 blk_mq_end_request+0x3a/0x70 block/blk-mq.c:575 blk_complete_reqs block/blk-mq.c:587 [inline] blk_done_softirq+0xfa/0x140 block/blk-mq.c:592 handle_softirqs+0x328/0x820 kernel/softirq.c:576 run_ksoftirqd+0x98/0xf0 kernel/softirq.c:943 smpboot_thread_fn+0x4f6/0x970 kernel/smpboot.c:164 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287