INFO: task syz-executor.3:6323 blocked for more than 143 seconds.
Not tainted 5.15.153-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28848 pid: 6323 ppid: 5517 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1047
__down_read_common kernel/locking/rwsem.c:1231 [inline]
__down_read kernel/locking/rwsem.c:1244 [inline]
down_read+0x9a/0x2e0 kernel/locking/rwsem.c:1490
iterate_supers+0xac/0x1e0 fs/super.c:703
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f778889fda9
RSP: 002b:00007f7786e200c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f77889cdf80 RCX: 00007f778889fda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f77888ec47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f77889cdf80 R15: 00007ffe4908dd28
INFO: task syz-executor.3:6325 blocked for more than 143 seconds.
Not tainted 5.15.153-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28504 pid: 6325 ppid: 5517 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1047
__down_read_common kernel/locking/rwsem.c:1231 [inline]
__down_read kernel/locking/rwsem.c:1244 [inline]
down_read+0x9a/0x2e0 kernel/locking/rwsem.c:1490
iterate_supers+0xac/0x1e0 fs/super.c:703
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f778889fda9
RSP: 002b:00007f7786dff0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f77889ce050 RCX: 00007f778889fda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f77888ec47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f77889ce050 R15: 00007ffe4908dd28
INFO: task syz-executor.3:6326 blocked for more than 144 seconds.
Not tainted 5.15.153-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28736 pid: 6326 ppid: 5517 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1047
__down_read_common kernel/locking/rwsem.c:1231 [inline]
__down_read kernel/locking/rwsem.c:1244 [inline]
down_read+0x9a/0x2e0 kernel/locking/rwsem.c:1490
iterate_supers+0xac/0x1e0 fs/super.c:703
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f778889fda9
RSP: 002b:00007f7786dde0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f77889ce120 RCX: 00007f778889fda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f77888ec47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f77889ce120 R15: 00007ffe4908dd28
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f720 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3260:
#0: ffff88802502b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000249b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:5/3596:
1 lock held by syz-executor.3/5324:
#0: ffff8880637ee0e0 (&type->s_umount_key#98/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
3 locks held by kworker/1:9/5414:
#0: ffff888011c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900040bfd20 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8c923bf0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x9c/0x4e0 kernel/rcu/tree.c:4039
1 lock held by syz-executor.3/6323:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.3/6325:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.3/6326:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.0/6767:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.2/7027:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.2/7030:
#0: ffff8880637ee0e0 (&type->s_umount_key#112){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
3 locks held by kworker/u4:8/7516:
#0: ffff888011dcd138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003887d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8c923bf0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x9c/0x4e0 kernel/rcu/tree.c:4039
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.153-syzkaller #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3561 Comm: kworker/0:5 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:slab_free_freelist_hook+0x3b/0x160
Code: 24 08 49 89 d4 48 89 f5 49 89 fd 48 8b 1e 4c 8b 3a 4d 85 ff 4c 0f 44 fb 48 c7 06 00 00 00 00 48 c7 02 00 00 00 00 4c 89 3c 24 15 48 8b 44 24 08 ff 08 4c 39 fb 48 8b 5c 24 10 0f 84 d8 00 00
RSP: 0018:ffffc900030b7ac8 EFLAGS: 00000246
RAX: 0000000000ca44c0 RBX: ffff888032913a00 RCX: ffffc900030b7b24
RDX: ffffc900030b7b28 RSI: ffffc900030b7b30 RDI: ffff888144798500
RBP: ffffc900030b7b30 R08: ffffffff81396e98 R09: ffffffff882d6439
R10: 0000000000000002 R11: ffff888016c89dc0 R12: ffffc900030b7b28
R13: ffff888144798500 R14: ffff888032913a00 R15: ffff888032913a00
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc17f9598 CR3: 000000006145b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
nsim_dev_trap_report drivers/net/netdevsim/dev.c:737 [inline]
nsim_dev_trap_report_work+0x788/0xab0 drivers/net/netdevsim/dev.c:762
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298