INFO: task syz.0.518:9085 blocked for more than 143 seconds.
Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.518 state:D stack:25272 pid:9085 tgid:9055 ppid:8665 flags:0x00004004
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]
do_truncate+0x20c/0x310 fs/open.c:63
handle_truncate fs/namei.c:3381 [inline]
do_open fs/namei.c:3731 [inline]
path_openat+0x2ced/0x3470 fs/namei.c:3886
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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: 0033:0x7f752217cef9
RSP: 002b:00007f7522f51038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7522336058 RCX: 00007f752217cef9
RDX: 0000000000020242 RSI: 0000000020000380 RDI: ffffffffffffff9c
RBP: 00007f75221ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7522336058 R15: 00007fffff397818
Showing all locks held in the system:
3 locks held by kworker/u8:1/12:
#0: ffff88802f959948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802f959948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
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
2 locks held by kworker/u8:3/52:
4 locks held by kworker/u8:5/1063:
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003947d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003947d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
#3: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#3: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
4 locks held by kworker/u8:9/2545:
#0: ffff888020aa8948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888020aa8948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90008ad7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90008ad7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff88806996d2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline]
#3: ffff88806996d2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_issue_checkpoint+0x2d6/0x4e0 fs/f2fs/checkpoint.c:1872
2 locks held by getty/4978:
#0: ffff88803017b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900034c32f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz.0.518/9085:
#0: ffff88807b046420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff8880783b0148 (&sb->s_type->i_mutex_key#31){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#1: ffff8880783b0148 (&sb->s_type->i_mutex_key#31){++++}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
5 locks held by syz.0.518/9090:
2 locks held by syz.1.544/9283:
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.0.551/9517:
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.1.587/9688:
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff8880256227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz.0.605/10019:
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
1 lock held by syz-executor/10298:
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/10404:
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz.0.638/10428:
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807b0460e0 (&type->s_umount_key#94){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.625/10443:
3 locks held by dhcpcd-run-hook/10465:
#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: ffff88802f70d798 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff88802f70d798 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:375
1 lock held by sed/10466:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9090 Comm: syz.0.518 Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:193 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x35/0x90 kernel/kcov.c:320
Code: 0c 25 c0 d6 03 00 65 8b 05 70 45 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e 8b 81 f8 15 00 00 <83> f8 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003cb63d8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000006 RCX: ffff88802e1a5a00
RDX: ffffc90009cfe000 RSI: 0000000000000028 RDI: 000000000000003f
RBP: 0000000000000028 R08: ffffffff8bac1aa2 R09: 1ffffffff27f4d08
R10: dffffc0000000000 R11: fffffbfff27f4d09 R12: ffffc90003cb64e8
R13: ffff888025f2a682 R14: ffffc90003cb64f8 R15: 1ffff92000796c9f
FS: 00007f7522f0f6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8aa794270 CR3: 000000005efe0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
xas_start+0x392/0x7b0 lib/xarray.c:195
xas_load+0x2c/0x5c0 lib/xarray.c:238
filemap_get_entry+0x1f0/0x3b0 mm/filemap.c:1840
__filemap_get_folio+0x79/0xc10 mm/filemap.c:1885
pagecache_get_page+0x2c/0x200 mm/folio-compat.c:81
find_get_page_flags include/linux/pagemap.h:732 [inline]
f2fs_grab_cache_page+0x2b/0x320 fs/f2fs/f2fs.h:2756
f2fs_ra_meta_pages+0x753/0xb10 fs/f2fs/checkpoint.c:303
gc_data_segment fs/f2fs/gc.c:1535 [inline]
do_garbage_collect+0x233f/0x7d80 fs/f2fs/gc.c:1774
f2fs_gc+0xf04/0x2fa0 fs/f2fs/gc.c:1877
f2fs_balance_fs+0x5f8/0x7a0 fs/f2fs/segment.c:442
f2fs_map_blocks+0x3dc5/0x4850 fs/f2fs/data.c:1781
f2fs_expand_inode_data+0x622/0xbb0 fs/f2fs/file.c:1806
f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903
vfs_fallocate+0x553/0x6c0 fs/open.c:334
do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886
__do_sys_ioctl fs/ioctl.c:905 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:893
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: 0033:0x7f752217cef9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7522f0f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7522336208 RCX: 00007f752217cef9
RDX: 00000000200001c0 RSI: 0000000040305828 RDI: 0000000000000006
RBP: 00007f75221ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7522336208 R15: 00007fffff397818