INFO: task syz-executor.3:26369 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24632 pid:26369 tgid:26369 ppid:20115 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_release+0x1cb/0xa20 block/bdev.c:1028
blkdev_release+0x15/0x20 block/fops.c:628
__fput+0x42b/0x8a0 fs/file_table.c:422
__do_sys_close fs/open.c:1556 [inline]
__se_sys_close fs/open.c:1541 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1541
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f48b847cc9a
RSP: 002b:00007fffe05154d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f48b847cc9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000032 R08: 0000001b2cb20000 R09: 000000000000006a
R10: 000000008136099b R11: 0000000000000293 R12: 00007f48b80002f8
R13: ffffffffffffffff R14: 00007f48b8000000 R15: 0000000000175350
INFO: task syz-executor.1:26383 blocked for more than 144 seconds.
Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27384 pid:26383 tgid:26382 ppid:20144 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_open+0xdc/0xc90 block/bdev.c:862
blkdev_open+0x20d/0x2e0 block/fops.c:620
do_dentry_open+0x909/0x15a0 fs/open.c:955
do_open fs/namei.c:3642 [inline]
path_openat+0x2860/0x3240 fs/namei.c:3799
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fa298e7dda9
RSP: 002b:00007fa299b450c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa298fabf80 RCX: 00007fa298e7dda9
RDX: 0000000000008000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007fa298eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa298fabf80 R15: 00007ffdc2f23a68
INFO: task syz-executor.2:26388 blocked for more than 145 seconds.
Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27384 pid:26388 tgid:26386 ppid:23915 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_open+0xdc/0xc90 block/bdev.c:862
blkdev_open+0x20d/0x2e0 block/fops.c:620
do_dentry_open+0x909/0x15a0 fs/open.c:955
do_open fs/namei.c:3642 [inline]
path_openat+0x2860/0x3240 fs/namei.c:3799
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9245c7dda9
RSP: 002b:00007f9246a8e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9245dabf80 RCX: 00007f9245c7dda9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f9245cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9245dabf80 R15: 00007ffc24695f78
INFO: task syz-executor.5:26391 blocked for more than 146 seconds.
Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27384 pid:26391 tgid:26389 ppid:24466 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_open+0xdc/0xc90 block/bdev.c:862
blkdev_open+0x20d/0x2e0 block/fops.c:620
do_dentry_open+0x909/0x15a0 fs/open.c:955
do_open fs/namei.c:3642 [inline]
path_openat+0x2860/0x3240 fs/namei.c:3799
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f74e6e7dda9
RSP: 002b:00007f74e7b2f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f74e6fabf80 RCX: 00007f74e6e7dda9
RDX: 0000000000004000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f74e6eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f74e6fabf80 R15: 00007fffbb703498
INFO: task syz-executor.0:26395 blocked for more than 147 seconds.
Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27384 pid:26395 tgid:26394 ppid:23339 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bdev_open+0xdc/0xc90 block/bdev.c:862
blkdev_open+0x20d/0x2e0 block/fops.c:620
do_dentry_open+0x909/0x15a0 fs/open.c:955
do_open fs/namei.c:3642 [inline]
path_openat+0x2860/0x3240 fs/namei.c:3799
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb255c7dda9
RSP: 002b:00007fb2569670c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb255dabf80 RCX: 00007fb255c7dda9
RDX: 0000000000008000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007fb255cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb255dabf80 R15: 00007ffd4d27e998
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:8/2409:
2 locks held by getty/4835:
#0: ffff88802eac90a0 (&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:2201
3 locks held by syz-fuzzer/5713:
6 locks held by syz-executor.3/25166:
4 locks held by syz-executor.0/25189:
1 lock held by syz-executor.3/26369:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x1cb/0xa20 block/bdev.c:1028
2 locks held by syz-executor.4/26380:
1 lock held by syz-executor.1/26383:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.2/26388:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.5/26391:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.0/26395:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.3/26473:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.1/26476:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.2/26508:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.5/26511:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.0/26514:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.4/26517:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.1/26606:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.2/26638:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.5/26651:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
1 lock held by syz-executor.0/26654:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
7 locks held by syz-executor.1/26706:
#0: ffff88802f39e420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2853 [inline]
#0: ffff88802f39e420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff8880a437c488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff88802264c0f0 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecc73e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff8880858ba0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff8880858ba0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff8880858ba0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292
#5: ffff8880a46b8250 (&devlink->lock_key#49){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8e137280 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x550 kernel/rcu/tree.c:4073
1 lock held by syz-executor.3/26720:
#0: ffff88802069c4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdc/0xc90 block/bdev.c:862
2 locks held by syz-executor.2/26724:
#0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.5/26734:
#0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26380 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:unwind_next_frame+0x1e6c/0x2a00 arch/x86/kernel/unwind_orc.c:672
Code: 00 e9 06 fd ff ff e8 93 47 54 00 eb 0c e8 8c 47 54 00 eb 05 e8 85 47 54 00 bf 01 00 00 00 e8 5b 3e 24 00 65 8b 1d ac 22 c3 7e <31> ff 89 de e8 ab 4b 54 00 85 db 0f 84 9d 02 00 00 e8 5e 47 54 00
RSP: 0018:ffffc90004007048 EFLAGS: 00000297
RAX: 0000000080000001 RBX: 0000000080000000 RCX: 0000000000000001
RDX: ffffc9000c1f1000 RSI: 000000000003ffff RDI: 0000000000000001
RBP: ffffc90004007120 R08: ffffffff8140ad65 R09: ffffffff8140a8df
R10: 0000000000000003 R11: ffff8880accb1e00 R12: ffffc900040072a0
R13: dffffc0000000000 R14: ffffc90004000000 R15: ffffc900040072a8
FS: 00007f4a7fbc86c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa94c9ad980 CR3: 0000000052440000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:129
__reset_page_owner+0x44/0x2d0 mm/page_owner.c:150
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x968/0xa90 mm/page_alloc.c:2346
free_unref_page_list+0x5a3/0x850 mm/page_alloc.c:2532
release_pages+0x2744/0x2a80 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
mapping_try_invalidate+0x4aa/0x5d0 mm/truncate.c:526
bdev_disk_changed+0x26f/0x1480 block/partitions/core.c:650
blkdev_get_whole+0x313/0x390 block/bdev.c:667
bdev_open+0x2ca/0xc90 block/bdev.c:874
bdev_file_open_by_dev+0x20a/0x290 block/bdev.c:973
disk_scan_partitions+0x1be/0x2b0 block/genhd.c:369
blkdev_common_ioctl+0x15cc/0x2880 block/ioctl.c:565
blkdev_ioctl+0x532/0x740 block/ioctl.c:634
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0xfe/0x170 fs/ioctl.c:890
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f4a7ee7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4a7fbc80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4a7efabf80 RCX: 00007f4a7ee7dda9
RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003
RBP: 00007f4a7eeca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4a7efabf80 R15: 00007fff6fc35ee8