INFO: task jfsCommit:114 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:26864 pid:114 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
io_schedule+0x80/0xd0 kernel/sched/core.c:9023
__lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
lock_metapage+0x1f9/0x320 fs/jfs/jfs_metapage.c:64
__get_metapage+0x4ca/0xfa0 fs/jfs/jfs_metapage.c:639
diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672
diFree+0x9d3/0x2c80 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x32b/0x440 fs/jfs/inode.c:162
evict+0x4ca/0x8d0 fs/inode.c:705
txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
jfs_lazycommit+0x429/0xa70 fs/jfs/jfs_txnmgr.c:2733
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/29:
#0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
3 locks held by kworker/u4:3/49:
#0: ffff88802c713538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#0: ffff88802c713538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x96f/0x15d0 kernel/workqueue.c:2730
#1: ffffc90000ba7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#1: ffffc90000ba7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x96f/0x15d0 kernel/workqueue.c:2730
#2: ffffffff8e3c2808 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd4/0x1530 net/ipv6/addrconf.c:4176
2 locks held by jfsCommit/114:
#0: ffff888057600920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2ea/0x2c80 fs/jfs/jfs_imap.c:889
#1: ffff88805cc5a638 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diFree+0x308/0x2c80 fs/jfs/jfs_imap.c:894
5 locks held by kworker/u4:7/1124:
#0: ffff88801a254938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#0: ffff88801a254938 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x96f/0x15d0 kernel/workqueue.c:2730
#1: ffffc9000488fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2628 [inline]
#1: ffffc9000488fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x96f/0x15d0 kernel/workqueue.c:2730
#2: ffffffff8e3b57d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x14c/0xbb0 net/core/net_namespace.c:606
#3: ffffffff8e3c2808 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xd4/0x370 net/ipv4/ip_tunnel.c:1152
#4: ffffffff8d137ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#4: ffffffff8d137ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3da/0x880 kernel/rcu/tree_exp.h:1004
1 lock held by kworker/u4:9/1137:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
2 locks held by dhcpcd/5432:
#0: ffffffff8e3a77e8 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x635/0x7e0 net/socket.c:1302
#1: ffffffff8e3c2808 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0xf1/0x630 net/8021q/vlan.c:580
2 locks held by getty/5537:
#0: ffff8880312920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x433/0x1390 drivers/tty/n_tty.c:2217
4 locks held by syz.8.345/7283:
#0: ffff88804fb74418 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805cc20590 (&type->i_mutex_dir_key#11/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
#1: ffff88805cc20590 (&type->i_mutex_dir_key#11/1){+.+.}-{3:3}, at: do_unlinkat+0x18d/0x590 fs/namei.c:4384
#2: ffff88805cc5aa90 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#2: ffff88805cc5aa90 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: vfs_unlink+0xf2/0x600 fs/namei.c:4322
#3: ffff88805cc5a638 (&jfs_ip->rdwrlock#2){+.+.}-{3:3}, at: jfs_unlink+0x1dd/0xa10 fs/jfs/namei.c:488
2 locks held by syz.8.345/7284:
#0: ffff88804fb74418 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
#1: ffff88805cc20590 (&type->i_mutex_dir_key#11/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
#1: ffff88805cc20590 (&type->i_mutex_dir_key#11/1){+.+.}-{3:3}, at: filename_create+0x20c/0x480 fs/namei.c:3890
2 locks held by syz.8.345/7285:
#0: ffff88804fb74418 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write_file+0x63/0x200 fs/namespace.c:456
#1: ffff88805cc20590 (&type->i_mutex_dir_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff88805cc20590 (&type->i_mutex_dir_key#12){+.+.}-{3:3}, at: chown_common+0x32d/0x5d0 fs/open.c:773
1 lock held by syz-executor/7426:
#0: ffffffff8e3c2808 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e3c2808 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x811/0xfa0 net/core/rtnetlink.c:6472
1 lock held by syz.9.407/7643:
#0: ffff888057942c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#0: ffff888057942c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff888057942c20 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x9b/0x230 net/socket.c:1420
1 lock held by syz.6.410/7670:
#0: ffff888026cd8100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline]
#0: ffff888026cd8100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_rfkill+0x63/0x220 net/nfc/core.c:1166
4 locks held by syz.6.410/7671:
#0: ffffffff8e4274b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1074
#1: ffffffff8e4272c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e4272c8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
#1: ffffffff8e4272c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0x7a0 net/netlink/genetlink.c:1065
#2: ffff888026cd8100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline]
#2: ffff888026cd8100 (&dev->mutex){....}-{3:3}, at: nfc_dev_up+0x3f/0x310 net/nfc/core.c:95
#3: ffff888026cde350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_open_device net/nfc/nci/core.c:478 [inline]
#3: ffff888026cde350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_dev_up+0xa4/0xd80 net/nfc/nci/core.c:634
2 locks held by syz.7.411/7677:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 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+0xf3d/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7677 Comm: syz.7.411 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:check_region_inline mm/kasan/generic.c:172 [inline]
RIP: 0010:kasan_check_range+0x2d/0x290 mm/kasan/generic.c:187
Code: 00 b0 01 48 85 f6 0f 84 b4 01 00 00 55 41 57 41 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 13 02 00 00 49 89 f9 49 c1 e9 2f <41> 81 f9 ff ff 01 00 0f 82 ff 01 00 00 49 89 ff 49 c1 ef 03 49 ba
RSP: 0000:ffffc90004267808 EFLAGS: 00000807
RAX: 0000000000000001 RBX: ffff888023690000 RCX: ffffffff8168e924
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff911c5540
RBP: 0000000000000003 R08: ffffffff911c5548 R09: 000000000001ffff
R10: dffffc0000000000 R11: fffffbfff2238aa9 R12: 0000000000000008
R13: dffffc0000000000 R14: ffff888023690ae0 R15: 000000000000022e
FS: 00007f3fbfb446c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fb530b000 CR3: 000000004113e000 CR4: 00000000003506e0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
mark_lock+0x94/0x320 kernel/locking/lockdep.c:4656
mark_usage kernel/locking/lockdep.c:4579 [inline]
__lock_acquire+0x111e/0x7d40 kernel/locking/lockdep.c:5091
reacquire_held_locks+0x30e/0x5b0 kernel/locking/lockdep.c:5279
__lock_release kernel/locking/lockdep.c:5468 [inline]
lock_release+0x332/0x8c0 kernel/locking/lockdep.c:5774
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock include/linux/rcupdate.h:819 [inline]
lock_vma_under_rcu+0x549/0x680 mm/memory.c:-1
do_user_addr_fault+0x318/0x12c0 arch/x86/mm/fault.c:1314
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f3fbea53f0e
Code: c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f3fbfb43470 EFLAGS: 00010206
RAX: 0000000000914001 RBX: 00007f3fbfb43530 RCX: 00000000000000a8
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f3fbfb435d0
RBP: 0000000000000102 R08: 00007f3fb49f7000 R09: 0000000000914000
R10: 0000000000000000 R11: 00007f3fbfb43540 R12: 0000000000000001
R13: 00007f3fbec52900 R14: 0000000000000000 R15: 00007f3fbfb435d0