INFO: task jfsCommit:112 blocked for more than 143 seconds.
Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:26888 pid:112 tgid:112 ppid:2 task_flags:0x200040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5392 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6781
__schedule_loop kernel/sched/core.c:6859 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6874
io_schedule+0x81/0xe0 kernel/sched/core.c:7719
__lock_metapage fs/jfs/jfs_metapage.c:52 [inline]
lock_metapage+0x1f3/0x400 fs/jfs/jfs_metapage.c:66
__get_metapage+0x497/0xde0 fs/jfs/jfs_metapage.c:746
diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672
diFree+0x983/0x2c40 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x331/0x440 fs/jfs/inode.c:156
evict+0x504/0x9c0 fs/inode.c:810
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x43f/0xa90 fs/jfs/jfs_txnmgr.c:2733
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
3 locks held by kworker/0:1/10:
1 lock held by khungtaskd/31:
#0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
5 locks held by kworker/u8:2/36:
2 locks held by kworker/u8:3/49:
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90000ba7bc0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000ba7bc0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
2 locks held by jfsCommit/112:
#0: ffff888026a58920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x29f/0x2c40 fs/jfs/jfs_imap.c:889
#1: ffff88805687caf8 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diFree+0x2bd/0x2c40 fs/jfs/jfs_imap.c:894
3 locks held by kworker/u8:5/1004:
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90003ae7bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003ae7bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303
2 locks held by kworker/u8:7/4309:
1 lock held by dhcpcd/5483:
#0: ffff88801b2fc988 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x9e/0x5d0 fs/kernfs/dir.c:1180
2 locks held by getty/5583:
#0: ffff8880347da0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
3 locks held by kworker/1:3/5875:
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90004be7bc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90004be7bc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff88805ca4c240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x26b/0x3180 drivers/net/netdevsim/fib.c:1490
5 locks held by kworker/u8:8/6425:
#0: ffff88801b2fb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b2fb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90004c57bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90004c57bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f4ec350 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800 net/core/net_namespace.c:662
#3: ffff888020b794e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_destruct+0x116/0x2f0 drivers/net/wireguard/device.c:249
#4: ffffffff8e142bb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
#4: ffffffff8e142bb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f4/0x730 kernel/rcu/tree_exp.h:998
1 lock held by syz-executor/7557:
#0: ffff8880310180e0 (&type->s_umount_key#70){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880310180e0 (&type->s_umount_key#70){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880310180e0 (&type->s_umount_key#70){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
7 locks held by syz-executor/8302:
#0: ffff888023402428 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3092 [inline]
#0: ffff888023402428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 fs/read_write.c:682
#1: ffff888055938488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0 fs/kernfs/file.c:325
#2: ffff888144bac1e8 (kn->active#53){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0 fs/kernfs/file.c:326
#3: ffffffff8ed96ec8 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: new_device_store+0x12c/0x6f0 drivers/net/netdevsim/bus.c:166
#4: ffff8881427310e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline]
#4: ffff8881427310e8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400 drivers/base/dd.c:1004
#5: ffff888142730250 (&devlink->lock_key#13){+.+.}-{4:4}, at: nsim_drv_probe+0xc1/0xb70 drivers/net/netdevsim/dev.c:1537
#6: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#6: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2143
3 locks held by syz-executor/8417:
#0: ffffffff8ec90da0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8ec90da0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8ec90da0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570
#1: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffffffff8f4f8f48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054
#2: ffffffff8e142bb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#2: ffffffff8e142bb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b7/0x730 kernel/rcu/tree_exp.h:998
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5939 Comm: kworker/1:5 Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: mld mld_ifc_work
RIP: 0010:usage_skip kernel/locking/lockdep.c:2256 [inline]
RIP: 0010:__bfs kernel/locking/lockdep.c:1803 [inline]
RIP: 0010:__bfs_backwards kernel/locking/lockdep.c:1863 [inline]
RIP: 0010:check_irq_usage kernel/locking/lockdep.c:2799 [inline]
RIP: 0010:check_prev_add kernel/locking/lockdep.c:3172 [inline]
RIP: 0010:check_prevs_add kernel/locking/lockdep.c:3287 [inline]
RIP: 0010:validate_chain+0xecf/0x2140 kernel/locking/lockdep.c:3911
Code: 2a 89 ca 80 e2 fa 80 78 2b 00 0f b6 c2 0f 44 c1 84 c0 0f 84 46 ff ff ff a8 0c 41 0f 94 45 2b 49 8b 6d 10 0f b6 85 c6 00 00 00 <85> c0 74 63 83 f8 01 0f 85 27 ff ff ff 83 3d 2d 9d 05 18 00 0f 85
RSP: 0018:ffffc90004e16fb8 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 00000000000003fd RCX: 0000000000000008
RDX: 0000000000000008 RSI: 00000000000003fd RDI: ffff888027059e00
RBP: ffffffff9349b860 R08: ffffc90004e16f80 R09: 0000000000000020
R10: dffffc0000000000 R11: ffffffff819e81e0 R12: ffffffff934b2568
R13: ffffffff96482d68 R14: ffff88802705a9e0 R15: 0000000000000162
FS: 0000000000000000(0000) GS:ffff888125d95000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28e7db8e9c CR3: 0000000031a86000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
seqcount_lockdep_reader_access+0xb4/0x180 include/linux/seqlock.h:72
read_seqbegin include/linux/seqlock.h:836 [inline]
zone_span_seqbegin include/linux/memory_hotplug.h:103 [inline]
page_outside_zone_boundaries mm/page_alloc.c:442 [inline]
bad_range+0x8b/0x2c0 mm/page_alloc.c:461
__free_one_page+0xee/0xba0 mm/page_alloc.c:813
free_pcppages_bulk+0x40e/0x610 mm/page_alloc.c:1341
free_frozen_page_commit+0x62c/0x1070 mm/page_alloc.c:2680
__free_frozen_pages+0x78b/0xe60 mm/page_alloc.c:2734
discard_slab mm/slub.c:2716 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3185
put_cpu_partial+0x17c/0x250 mm/slub.c:3260
__slab_free+0x2f7/0x400 mm/slub.c:4512
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4147 [inline]
slab_alloc_node mm/slub.c:4196 [inline]
kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4248
__alloc_skb+0x112/0x2d0 net/core/skbuff.c:660
alloc_skb include/linux/skbuff.h:1336 [inline]
mld_newpack+0x13c/0xc40 net/ipv6/mcast.c:1788
add_grhead+0x5a/0x2a0 net/ipv6/mcast.c:1899
add_grec+0x13b2/0x1670 net/ipv6/mcast.c:2037
mld_send_cr net/ipv6/mcast.c:2163 [inline]
mld_ifc_work+0x6e6/0xde0 net/ipv6/mcast.c:2702
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245