INFO: task syz.1.293:8030 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.293 state:D stack:25520 pid:8030 tgid:8009 ppid:7522 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:800 [inline]
chown_common+0x3e1/0x850 fs/open.c:784
do_fchownat+0x16a/0x240 fs/open.c:825
__do_sys_lchown fs/open.c:850 [inline]
__se_sys_lchown fs/open.c:848 [inline]
__x64_sys_lchown+0x85/0xa0 fs/open.c:848
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b15f7def9
RSP: 002b:00007f1b16dbf038 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f1b16136130 RCX: 00007f1b15f7def9
RDX: ffffffffffffffff RSI: 0000000000008040 RDI: 00000000200044c0
RBP: 00007f1b15ff0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b16136130 R15: 00007ffda15b8388
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
4 locks held by kworker/u8:2/35:
#0: ffff88801ead0948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801ead0948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000ab7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000ab7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff88806d3bd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline]
#3: ffff88806d3bd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x5b0/0x7a0 fs/f2fs/segment.c:440
5 locks held by kworker/u8:6/1057:
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003fc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003fc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6d250 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff88807d2b30e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff88807d2b30e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff88807d2b30e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff88807d2b1250 (&devlink->lock_key#36){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff88807d2b1250 (&devlink->lock_key#36){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff88807d2b1250 (&devlink->lock_key#36){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
2 locks held by getty/4979:
#0: ffff8880303640a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
4 locks held by kworker/1:4/5306:
#0: ffff8880b893e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1: ffff8880b8928948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
#2: ffff8880546f0da0 (&r->consumer_lock#2){+.+.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
#2: ffff8880546f0da0 (&r->consumer_lock#2){+.+.}-{2:2}, at: ptr_ring_consume_bh include/linux/ptr_ring.h:365 [inline]
#2: ffff8880546f0da0 (&r->consumer_lock#2){+.+.}-{2:2}, at: wg_packet_encrypt_worker+0x12a6/0x1610 drivers/net/wireguard/send.c:293
#3: ffff8880b883e118 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x759/0xf50
4 locks held by syz.1.293/8029:
2 locks held by syz.1.293/8030:
#0: ffff888073064420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888062352d30 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#1: ffff888062352d30 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: chown_common+0x3e1/0x850 fs/open.c:784
2 locks held by syz.0.329/8573:
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff888025c9e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff888025c9e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz.1.354/8751:
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
1 lock held by syz.0.345/8865:
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.406/9415:
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880730640e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/9557:
#0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
1 lock held by syz.1.465/9690:
#0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
1 lock held by dhcpcd-run-hook/9709:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9720 Comm: rm Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4798 [inline]
RIP: 0010:__lock_acquire+0x92c/0x2040 kernel/locking/lockdep.c:5092
Code: 0e 00 75 23 90 48 c7 c7 e0 d3 ea 8b 48 c7 c6 80 d6 ea 8b e8 56 d4 e5 ff 48 ba 00 00 00 00 00 fc ff df 90 0f 0b 90 90 90 31 db <48> 8d ab c4 00 00 00 48 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85
RSP: 0000:ffffc90004ce72f0 EFLAGS: 00000006
RAX: 000000000003e418 RBX: ffffffff939acb58 RCX: ffffffff816fdb20
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff93fa68d8
RBP: 00000000ffffffff R08: ffffffff93fa68df R09: 1ffffffff27f4d1b
R10: dffffc0000000000 R11: fffffbfff27f4d1c R12: 0000000000000000
R13: ffff888028b82900 R14: 0000000000000000 R15: ffff888028b82900
FS: 00007ff6e33b2380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6e35a68e5 CR3: 000000004b46c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:930 [inline]
pfn_valid+0x113/0x450 include/linux/mmzone.h:2022
page_table_check_set+0x25/0x550 mm/page_table_check.c:110
__page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:267 [inline]
set_pte_range+0x724/0x750 mm/memory.c:4823
filemap_map_order0_folio mm/filemap.c:3594 [inline]
filemap_map_pages+0x117b/0x1e70 mm/filemap.c:3644
do_fault_around mm/memory.c:5036 [inline]
do_read_fault mm/memory.c:5069 [inline]
do_fault mm/memory.c:5208 [inline]
do_pte_missing mm/memory.c:3964 [inline]
handle_pte_fault+0x309e/0x6fc0 mm/memory.c:5538
__handle_mm_fault mm/memory.c:5681 [inline]
handle_mm_fault+0x1056/0x1ad0 mm/memory.c:5849
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff6e36c4ec9
Code: c3 41 57 41 56 41 55 49 89 d5 41 54 49 89 fc 55 53 48 89 f3 48 81 ec 98 00 00 00 48 89 4c 24 18 4c 89 44 24 08 44 89 4c 24 28 <41> 0f b6 04 24 4c 89 e2 bd 05 15 00 00 84 c0 74 0f 48 6b ed 21 48
RSP: 002b:00007ffc1ffdd100 EFLAGS: 00010206
RAX: 00007ffc1ffdd1f0 RBX: 00007ff6e36ec850 RCX: 00007ff6e36ecbf0
RDX: 00007ffc1ffdd1e8 RSI: 00007ff6e36ec850 RDI: 00007ff6e35a68e5
RBP: 00007ffc1ffdd330 R08: 00007ffc1ffdd208 R09: 0000000000000000
R10: 00007ff6e36eaa80 R11: 0000000000000007 R12: 00007ff6e35a68e5
R13: 00007ffc1ffdd1e8 R14: 00007ff6e36b16b0 R15: 00007ff6e36b4c30