INFO: task syz-executor.4:9537 blocked for more than 146 seconds.
Not tainted 6.8.0-rc2-next-20240202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26576 pid:9537 tgid:9532 ppid:5089 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_workqueue+0x730/0x1630 kernel/workqueue.c:3617
ceph_monc_stop+0x7c/0x1e0 net/ceph/mon_client.c:1248
ceph_destroy_client+0x74/0x130 net/ceph/ceph_common.c:768
destroy_fs_client+0x192/0x270 fs/ceph/super.c:899
deactivate_locked_super+0xc4/0x130 fs/super.c:477
ceph_get_tree+0x9a9/0x17b0 fs/ceph/super.c:1361
vfs_get_tree+0x90/0x2a0 fs/super.c:1784
vfs_cmd_create+0xe4/0x230 fs/fsopen.c:230
__do_sys_fsconfig fs/fsopen.c:476 [inline]
__se_sys_fsconfig+0x967/0xec0 fs/fsopen.c:349
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7ff30327dda9
RSP: 002b:00007ff303efe0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007ff3033abf80 RCX: 00007ff30327dda9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007ff3032ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff3033abf80 R15: 00007ffd388f0b08
Showing all locks held in the system:
3 locks held by kworker/u4:0/10:
1 lock held by khungtaskd/30:
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u5:1/4464:
#0: ffff8880725c7148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#0: ffff8880725c7148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
#1: ffffc9000df57d20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#1: ffffc9000df57d20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
#2: ffff88807f351060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:305
2 locks held by getty/4828:
#0: ffff88802a6320a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.4/9537:
#0: ffff88802f55b870 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff88802f55b870 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
1 lock held by syz-executor.2/11261:
#0: ffff88802ce90b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline]
#0: ffff88802ce90b20 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x182/0x420 mm/util.c:571
4 locks held by syz-executor.2/11272:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.8.0-rc2-next-20240202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9740 Comm: syz-executor.4 Not tainted 6.8.0-rc2-next-20240202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__free_pages+0x4/0x210 mm/page_alloc.c:4690
Code: bc dc ff ff e8 6d 85 82 09 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 41 57 41 56 41 54 53 41 89 f7 49 89 fe 49 bc 00 00 00 00 00 fc
RSP: 0018:ffffc9000324f758 EFLAGS: 00000246
RAX: cfc420af10c8c400 RBX: ffffea00008ce780 RCX: 1ffff92000649ed4
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffea00008ce780
RBP: 1ffff1100e599e65 R08: ffffffff8f85b72f R09: 1ffffffff1f0b6e5
R10: dffffc0000000000 R11: fffffbfff1f0b6e6 R12: ffff888072ccf320
R13: 1ffff1100e599e64 R14: 0000000000000001 R15: ffff888072ccf32c
FS: 0000555555a5c480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b78ad56c6 CR3: 0000000023a2c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfree+0x186/0x2e0 mm/vmalloc.c:3252
copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:882 [inline]
get_entries net/ipv6/netfilter/ip6_tables.c:1039 [inline]
do_ip6t_get_ctl+0x11eb/0x1820 net/ipv6/netfilter/ip6_tables.c:1669
nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x263/0x380 net/ipv6/ipv6_sockglue.c:1488
tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4372
do_sock_getsockopt+0x373/0x850 net/socket.c:2373
__sys_getsockopt+0x271/0x330 net/socket.c:2402
__do_sys_getsockopt net/socket.c:2412 [inline]
__se_sys_getsockopt net/socket.c:2409 [inline]
__x64_sys_getsockopt+0xb5/0xd0 net/socket.c:2409
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f5f1127f94a
Code: c4 c1 e0 1a 0d 00 00 04 00 89 01 e9 e0 fe ff ff e8 3b 05 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffc12b89798 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffc12b89820 RCX: 00007f5f1127f94a
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffc12b897bc R09: 0079746972756365
R10: 00007ffc12b89820 R11: 0000000000000212 R12: 00007f5f1137bf80
R13: 00007ffc12b897bc R14: 0000000000000000 R15: 00007f5f1137cd00