INFO: task udevd:5108 blocked for more than 143 seconds.
Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:24512 pid:5108 tgid:5108 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_open+0xf7/0xca0 block/bdev.c:897
blkdev_open+0x20d/0x2e0 block/fops.c:615
do_dentry_open+0x970/0x1450 fs/open.c:959
vfs_open+0x3e/0x330 fs/open.c:1090
do_open fs/namei.c:3665 [inline]
path_openat+0x2b58/0x35e0 fs/namei.c:3824
do_filp_open+0x235/0x490 fs/namei.c:3851
do_sys_openat2+0x13e/0x1d0 fs/open.c:1417
do_sys_open fs/open.c:1432 [inline]
__do_sys_openat fs/open.c:1448 [inline]
__se_sys_openat fs/open.c:1443 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1443
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: 0033:0x7f580c1169a4
RSP: 002b:00007ffe2e974f20 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005585c37f4d00 RCX: 00007f580c1169a4
RDX: 00000000000a0800 RSI: 00005585c37d4580 RDI: 00000000ffffff9c
RBP: 00005585c37d4580 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005585c37e85b0 R14: 0000000000000001 R15: 00005585c37d3910
INFO: task syz.4.135:5661 blocked for more than 144 seconds.
Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.135 state:D stack:26288 pid:5661 tgid:5657 ppid:5089 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_release+0x184/0x700 block/bdev.c:1080
blkdev_release+0x15/0x20 block/fops.c:623
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d29975d39
RSP: 002b:00007f8d2a7ac048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f8d29b03fa0 RCX: 00007f8d29975d39
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007f8d299f6766 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8d29b03fa0 R15: 00007ffedb06b2d8
INFO: task syz.4.135:5674 blocked for more than 145 seconds.
Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.135 state:D stack:20528 pid:5674 tgid:5657 ppid:5089 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
io_schedule+0x8d/0x110 kernel/sched/core.c:7471
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_put_wait_locked mm/filemap.c:1471 [inline]
do_read_cache_folio+0xb9/0x820 mm/filemap.c:3771
read_mapping_folio include/linux/pagemap.h:906 [inline]
read_part_sector+0xb3/0x330 block/partitions/core.c:712
adfspart_check_POWERTEC+0xc8/0x8f0 block/partitions/acorn.c:454
check_partition block/partitions/core.c:138 [inline]
blk_add_partitions block/partitions/core.c:579 [inline]
bdev_disk_changed+0x72c/0x13d0 block/partitions/core.c:683
blkdev_get_whole+0x315/0x470 block/bdev.c:700
bdev_open+0x2e8/0xca0 block/bdev.c:909
blkdev_open+0x20d/0x2e0 block/fops.c:615
do_dentry_open+0x970/0x1450 fs/open.c:959
vfs_open+0x3e/0x330 fs/open.c:1090
do_open fs/namei.c:3665 [inline]
path_openat+0x2b58/0x35e0 fs/namei.c:3824
do_filp_open+0x235/0x490 fs/namei.c:3851
do_sys_openat2+0x13e/0x1d0 fs/open.c:1417
do_sys_open fs/open.c:1432 [inline]
__do_sys_openat fs/open.c:1448 [inline]
__se_sys_openat fs/open.c:1443 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1443
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: 0033:0x7f8d29974590
RSP: 002b:00007f8d2a769b80 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8d29974590
RDX: 0000000000000000 RSI: 00007f8d2a769c20 RDI: 00000000ffffff9c
RBP: 00007f8d2a769c20 R08: 0000000000000000 R09: 002364626e2f7665
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8d29b04140 R15: 00007ffedb06b2d8
Showing all locks held in the system:
4 locks held by kworker/0:0/8:
3 locks held by kworker/u8:1/12:
#0: ffff88802a83b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff88802a83b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
1 lock held by khungtaskd/30:
#0: ffffffff8e3357a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
#0: ffffffff8e3357a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline]
#0: ffffffff8e3357a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6688
2 locks held by kworker/u8:5/982:
#0: ffff8880b953e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:568
#1: ffffc90004167d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90004167d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
2 locks held by getty/4846:
#0: ffff88802adef0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by udevd/5108:
#0: ffff8880203f04c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xf7/0xca0 block/bdev.c:897
1 lock held by syz.4.135/5661:
#0: ffff8880203f04c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x184/0x700 block/bdev.c:1080
1 lock held by syz.4.135/5674:
#0: ffff8880203f04c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xf7/0xca0 block/bdev.c:897
2 locks held by syz.4.399/6452:
#0: ffff88807d3240e0 (&type->s_umount_key#88/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
#1: ffff8880203f04c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xf7/0xca0 block/bdev.c:897
1 lock held by syz.4.651/7300:
#0: ffff8880203f04c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xf7/0xca0 block/bdev.c:897
1 lock held by syz.4.651/7303:
#0: ffff88806a0760e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
7 locks held by syz-executor/7856:
#0: ffff88802fbe6420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2872 [inline]
#0: ffff88802fbe6420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff88802c38d488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888022c03968 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ef04068 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
#4: ffff8880235a30e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff8880235a30e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1004
#5: ffff8880235a2250 (&devlink->lock_key#13){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534
#6: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871
1 lock held by syz-executor/7902:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
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: 982 Comm: kworker/u8:5 Not tainted 6.10.0-rc4-next-20240621-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x14/0x120 lib/smp_processor_id.c:13
Code: 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 08 65 8b 1d 0c 4f 76 74 65 8b 05 01 4f 76 74 a9 ff ff
RSP: 0018:ffffc90004167948 EFLAGS: 00000086
RAX: b46548e19f997700 RBX: ffffc900041679e0 RCX: ffffffff816f5e14
RDX: 0000000000000000 RSI: ffffffff8bcad580 RDI: ffffffff8c206c80
RBP: ffffc90004167ad0 R08: ffffffff8faeddef R09: 1ffffffff1f5dbbd
R10: dffffc0000000000 R11: fffffbfff1f5dbbe R12: 1ffff9200082cf38
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff322d0ab8 CR3: 000000002a73e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
lock_acquire+0x1b0/0x550 kernel/locking/lockdep.c:5815
rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
rcu_read_lock include/linux/rcupdate.h:845 [inline]
batadv_nc_process_nc_paths+0xd6/0x3a0 net/batman-adv/network-coding.c:687
batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
vkms_vblank_simulate: vblank timer overrun