INFO: task syz-executor.2:7536 blocked for more than 143 seconds.
Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23696 pid:7536 tgid:7536 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_work+0x5bd/0xc60 kernel/workqueue.c:4211
flush_all_cpus_locked+0x16d/0x210 mm/slub.c:3185
__kmem_cache_shutdown+0x2a/0x3a0 mm/slub.c:5374
shutdown_cache mm/slab_common.c:456 [inline]
kmem_cache_destroy mm/slab_common.c:496 [inline]
kmem_cache_destroy+0x60/0x1b0 mm/slab_common.c:479
bio_put_slab block/bio.c:155 [inline]
bioset_exit+0x2fc/0x5b0 block/bio.c:1740
__bch2_fs_free fs/bcachefs/super.c:574 [inline]
bch2_fs_release+0x3bb/0x810 fs/bcachefs/super.c:603
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1fa/0x5b0 lib/kobject.c:737
deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
deactivate_super+0xde/0x100 fs/super.c:506
cleanup_mnt+0x222/0x450 fs/namespace.c:1267
task_work_run+0x14e/0x250 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f41b947e217
RSP: 002b:00007ffdc109add8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f41b947e217
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc109ae90
RBP: 00007ffdc109ae90 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdc109bf50
R13: 00007f41b94c8336 R14: 000000000005ff66 R15: 000000000000000e
INFO: task syz-executor.3:9921 blocked for more than 144 seconds.
Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25584 pid:9921 tgid:9920 ppid:7655 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_work+0x5bd/0xc60 kernel/workqueue.c:4211
__lru_add_drain_all+0x52c/0x740 mm/swap.c:902
invalidate_bdev+0x77/0xa0 block/bdev.c:100
ntfs_loadlog_and_replay+0x239/0x5c0 fs/ntfs3/fsntfs.c:330
ntfs_fill_super+0x1fc9/0x4460 fs/ntfs3/super.c:1284
get_tree_bdev+0x36f/0x610 fs/super.c:1615
vfs_get_tree+0x8f/0x380 fs/super.c:1780
do_new_mount fs/namespace.c:3352 [inline]
path_mount+0x14e6/0x1f20 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__x64_sys_mount+0x297/0x320 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe6bc67e5ea
RSP: 002b:00007fe6bd3aaef8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe6bd3aaf80 RCX: 00007fe6bc67e5ea
RDX: 000000002001f800 RSI: 0000000020000040 RDI: 00007fe6bd3aaf40
RBP: 000000002001f800 R08: 00007fe6bd3aaf80 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000206 R12: 0000000020000040
R13: 00007fe6bd3aaf40 R14: 000000000001f82a R15: 00000000200002c0
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8dbb18e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8dbb18e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8dbb18e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:2/35:
#0: ffff88802a90f948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc90000ab7d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x1500 net/ipv6/addrconf.c:4193
2 locks held by kworker/1:1/45:
2 locks held by kworker/u8:7/1057:
3 locks held by kworker/1:2/1795:
2 locks held by getty/4839:
#0: ffff88802b51f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-fuzzer/5081:
4 locks held by syz-executor.2/7536:
#0: ffffffff8e5df408 (bio_slab_lock){+.+.}-{3:3}, at: bio_put_slab block/bio.c:140 [inline]
#0: ffffffff8e5df408 (bio_slab_lock){+.+.}-{3:3}, at: bioset_exit+0x1fe/0x5b0 block/bio.c:1740
#1: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy mm/slab_common.c:487 [inline]
#1: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x34/0x1b0 mm/slab_common.c:479
#2: ffffffff8dd08ee8 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy mm/slab_common.c:488 [inline]
#2: ffffffff8dd08ee8 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy+0x42/0x1b0 mm/slab_common.c:479
#3: ffffffff8dd3eae8 (flush_lock){+.+.}-{3:3}, at: flush_all_cpus_locked+0x24/0x210 mm/slub.c:3167
3 locks held by syz-executor.4/7750:
#0: ffff88804c5680e0 (&type->s_umount_key#93){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88804c5680e0 (&type->s_umount_key#93){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88804c5680e0 (&type->s_umount_key#93){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy mm/slab_common.c:487 [inline]
#1: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x34/0x1b0 mm/slab_common.c:479
#2: ffffffff8dd08ee8 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy mm/slab_common.c:488 [inline]
#2: ffffffff8dd08ee8 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy+0x42/0x1b0 mm/slab_common.c:479
3 locks held by kworker/0:8/7920:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc900037cfd80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
5 locks held by syz-executor.0/9883:
2 locks held by syz-executor.3/9921:
#0: ffff88802b4a80e0 (&type->s_umount_key#90/1){+.+.}-{3:3}, at: alloc_super+0x23d/0xbd0 fs/super.c:344
#1: ffffffff8dcd16e8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:857
1 lock held by udevd/9929:
#0: ffff88801d943748 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
#0: ffff88801d943748 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x12b/0x5a0 mm/readahead.c:225
1 lock held by syz-executor.1/9935:
#0: ffffffff8dcd16e8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:857
1 lock held by syz-executor.0/9938:
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
8 locks held by syz-executor.3/9945:
#0: ffff88802aed2420 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:643
#1: ffff88805dc81488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x500 fs/kernfs/file.c:325
#2: ffff888023617a58 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x500 fs/kernfs/file.c:326
#3: ffffffff8ed86a48 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:216
#4: ffff88807dcf60e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88807dcf60e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline]
#4: ffff88807dcf60e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290
#5: ffff88807dcf7250 (&devlink->lock_key#12){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x6f/0x6a0 drivers/net/netdevsim/netdev.c:772
#7: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:5983 [inline]
#7: ffffffff8da55590 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x531/0x19f0 net/core/dev.c:11200
1 lock held by syz-executor.1/9957:
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
1 lock held by syz-executor.0/9966:
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
1 lock held by syz-executor.3/9969:
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
1 lock held by syz-executor.1/9975:
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f74b068 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9883 Comm: syz-executor.0 Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024