INFO: task syz.3.73:5858 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.73 state:D stack:25024 pid:5858 tgid:5837 ppid:5449 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
rwsem_down_write_slowpath+0xeee/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:815 [inline]
vfs_unlink+0xe4/0x650 fs/namei.c:4458
do_unlinkat+0x4ae/0x830 fs/namei.c:4533
__do_sys_unlinkat fs/namei.c:4576 [inline]
__se_sys_unlinkat fs/namei.c:4569 [inline]
__x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4569
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: 0033:0x7fd84c97df39
RSP: 002b:00007fd84d716038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007fd84cb36058 RCX: 00007fd84c97df39
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00007fd84c9f0216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd84cb36058 R15: 00007ffea6d61628
INFO: task syz.3.73:5871 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.73 state:D stack:27424 pid:5871 tgid:5837 ppid:5449 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
rwsem_down_write_slowpath+0xeee/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_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:850 [inline]
filename_create+0x260/0x540 fs/namei.c:4026
do_mknodat+0x18b/0x5b0 fs/namei.c:4172
__do_sys_mknodat fs/namei.c:4213 [inline]
__se_sys_mknodat fs/namei.c:4210 [inline]
__x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4210
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: 0033:0x7fd84c97df39
RSP: 002b:00007fd84d6f5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007fd84cb36130 RCX: 00007fd84c97df39
RDX: 00000000000061c0 RSI: 0000000020000180 RDI: ffffffffffffff9c
RBP: 00007fd84c9f0216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd84cb36130 R15: 00007ffea6d61628
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
2 locks held by kworker/u8:1/12:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000117d00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000117d00 ((reaper_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
1 lock held by khungtaskd/30:
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
5 locks held by kworker/u8:2/35:
5 locks held by kworker/u8:7/2914:
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90009857d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90009857d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcb1d10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffffffff8fcbe808 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x55/0x2c0 net/mac80211/main.c:1662
#4: ffff88802a240768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#4: ffff88802a240768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_remove_interfaces+0x12b/0x700 net/mac80211/iface.c:2275
2 locks held by kworker/u8:8/3004:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90009c57d00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90009c57d00 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
2 locks held by kworker/u8:9/3041:
3 locks held by udevd/4674:
1 lock held by dhcpcd/4888:
#0: ffffffff8fcbe808 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1aa0 net/ipv4/devinet.c:1097
2 locks held by getty/4980:
#0: ffff88802eed50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by syz.3.73/5838:
#0: ffff888022f30420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff8880561788c0 (&sb->s_type->i_mutex_key#33){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff8880561788c0 (&sb->s_type->i_mutex_key#33){++++}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
#2: ffff88806b800a38 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16d/0x2c0 fs/bcachefs/io_misc.c:290
#3: ffff88806b804398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline]
#3: ffff88806b804398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline]
#3: ffff88806b804398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3215
#4: ffff88806b8266d0 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1202
3 locks held by syz.3.73/5858:
#0: ffff888022f30420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888056178148 (&sb->s_type->i_mutex_key#33/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff888056178148 (&sb->s_type->i_mutex_key#33/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4520
#2: ffff8880561788c0 (&sb->s_type->i_mutex_key#33){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#2: ffff8880561788c0 (&sb->s_type->i_mutex_key#33){++++}-{3:3}, at: vfs_unlink+0xe4/0x650 fs/namei.c:4458
2 locks held by syz.3.73/5871:
#0: ffff888022f30420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888056178148 (&sb->s_type->i_mutex_key#33/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff888056178148 (&sb->s_type->i_mutex_key#33/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
2 locks held by syz-executor/7492:
1 lock held by syz-executor/8004:
#0: ffffffff8fcbe808 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcbe808 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
2 locks held by syz.1.364/8053:
#0: ffff88806ad2e420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b772f40 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88805b772f40 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
7 locks held by syz.1.364/8080:
2 locks held by syz.1.364/8094:
#0: ffff88806ad2e420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b7735a0 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88805b7735a0 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
3 locks held by syz.1.364/8096:
#0: ffff88806ad2e420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b772f40 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88805b772f40 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3161 [inline]
#1: ffff88805b772f40 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5105
#2: ffff88805b7735a0 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#2: ffff88805b7735a0 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: lock_two_nondirectories+0xe1/0x170 fs/inode.c:1209
2 locks held by syz.3.368/8061:
2 locks held by syz.0.369/8079:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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: 8094 Comm: syz.1.364 Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0x0/0x2050 kernel/locking/lockdep.c:5050
Code: 8b 0c 24 80 e1 07 80 c1 03 38 c1 7c 8f 48 8b 3c 24 e8 a4 28 8b 00 eb 84 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 41 55 41 54 53 48 81 ec 90 00 00 00 44 89 4c 24 40
RSP: 0018:ffffc90003b86d10 EFLAGS: 00000006
RAX: 0000000000000001 RBX: ffffc90003b86da0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e937da0
RBP: ffffc90003b86e88 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff20375e6 R12: 1ffff92000770db0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000246
FS: 00007f58e1ca86c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30b6b610a0 CR3: 0000000062952000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
filemap_get_entry+0x144/0x3b0 mm/filemap.c:1839
__filemap_get_folio+0x71/0xbd0 mm/filemap.c:1887
filemap_grab_folio include/linux/pagemap.h:806 [inline]
nilfs_grab_buffer+0xb1/0x440 fs/nilfs2/page.c:57
nilfs_btnode_submit_block+0xe5/0x7d0 fs/nilfs2/btnode.c:96
__nilfs_btree_get_block+0x18d/0x7f0 fs/nilfs2/btree.c:481
nilfs_btree_get_block fs/nilfs2/btree.c:544 [inline]
nilfs_btree_do_lookup_last fs/nilfs2/btree.c:629 [inline]
nilfs_btree_last_key+0x2f1/0x720 fs/nilfs2/btree.c:1646
nilfs_bmap_do_truncate fs/nilfs2/bmap.c:275 [inline]
nilfs_bmap_truncate+0x38a/0x590 fs/nilfs2/bmap.c:305
nilfs_truncate_bmap+0x207/0x3d0 fs/nilfs2/inode.c:798
nilfs_truncate+0x28f/0x500 fs/nilfs2/inode.c:828
nilfs_setattr+0x20e/0x2c0 fs/nilfs2/inode.c:942
notify_change+0xbca/0xe90 fs/attr.c:503
do_truncate+0x220/0x310 fs/open.c:65
handle_truncate fs/namei.c:3395 [inline]
do_open fs/namei.c:3778 [inline]
path_openat+0x2e1e/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1441
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: 0033:0x7f58e0f7df39
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:00007f58e1ca8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f58e1136130 RCX: 00007f58e0f7df39
RDX: 0000000000101740 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f58e0ff0216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000179 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f58e1136130 R15: 00007ffe4595aec8