INFO: task syz-executor247:5839 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00205-g3571e8b091f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor247 state:D stack:27280 pid:5839 tgid:5839 ppid:5837 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
filemap_invalidate_lock include/linux/fs.h:922 [inline]
blkdev_fallocate+0x1d1/0x380 block/fops.c:839
vfs_fallocate+0x60d/0x10d0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:365
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbd5e89db29
RSP: 002b:00007ffd41661538 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5e89db29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000100001002000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd41661758 R14: 00007ffd41661560 R15: 00007ffd41661550
INFO: task syz-executor247:5841 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00205-g3571e8b091f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor247 state:D stack:27280 pid:5841 tgid:5841 ppid:5838 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
filemap_invalidate_lock include/linux/fs.h:922 [inline]
blkdev_fallocate+0x1d1/0x380 block/fops.c:839
vfs_fallocate+0x60d/0x10d0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:365
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbd5e89db29
RSP: 002b:00007ffd41661538 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5e89db29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000100001002000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd41661758 R14: 00007ffd41661560 R15: 00007ffd41661550
INFO: task syz-executor247:5846 blocked for more than 143 seconds.
Not tainted 6.14.0-rc6-syzkaller-00205-g3571e8b091f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor247 state:D stack:28368 pid:5846 tgid:5846 ppid:5842 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
filemap_invalidate_lock include/linux/fs.h:922 [inline]
blkdev_fallocate+0x1d1/0x380 block/fops.c:839
vfs_fallocate+0x60d/0x10d0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:365
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbd5e89db29
RSP: 002b:00007ffd41661538 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd5e89db29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000100001002000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd41661758 R14: 00007ffd41661560 R15: 00007ffd41661550
Showing all locks held in the system:
1 lock held by ksoftirqd/0/17:
1 lock held by khungtaskd/31:
#0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bd140 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
1 lock held by klogd/5183:
2 locks held by getty/5589:
#0: ffff888035fca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor247/5839:
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:922 [inline]
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x1d1/0x380 block/fops.c:839
1 lock held by syz-executor247/5841:
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:922 [inline]
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x1d1/0x380 block/fops.c:839
2 locks held by syz-executor247/5845:
1 lock held by syz-executor247/5846:
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:922 [inline]
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x1d1/0x380 block/fops.c:839
1 lock held by syz-executor247/5853:
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:922 [inline]
#0: ffff888023b670c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x1d1/0x380 block/fops.c:839
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc6-syzkaller-00205-g3571e8b091f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0xf62/0x12b0 kernel/hung_task.c:399
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
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: 5183 Comm: klogd Not tainted 6.14.0-rc6-syzkaller-00205-g3571e8b091f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_preemption_disabled+0x8/0xe0 lib/smp_processor_id.c:14
Code: aa 74 85 c0 74 04 90 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 53 48 83 ec 08 <65> 8b 1d 4d 4d ac 74 65 8b 05 42 4d ac 74 a9 ff ff ff 7f 74 0f 48
RSP: 0018:ffffc90003d4f758 EFLAGS: 00000092
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81c1a755
RDX: fffffbfff20c4ca3 RSI: ffffffff8bd36b20 RDI: ffffffff8bd36b60
RBP: 000000000003d94c R08: 0000000000000000 R09: fffffbfff20c4ca2
R10: ffffffff90626517 R11: 0000000000000001 R12: ffffea000149e200
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88804e2d8000
FS: 00007fc7fe0dd500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f71cab028 CR3: 000000007821e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:716
trace_irq_disable.constprop.0+0xea/0x140 include/trace/events/preemptirq.h:36
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
_raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
__put_partials+0xc3/0x170 mm/slub.c:3133
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:385
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4294 [inline]
__kmalloc_node_track_caller_noprof+0x222/0x510 mm/slub.c:4313
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:537
__alloc_skb+0x164/0x380 net/core/skbuff.c:606
alloc_skb include/linux/skbuff.h:1331 [inline]
alloc_skb_with_frags+0xe4/0x850 net/core/skbuff.c:6522
sock_alloc_send_pskb+0x7f1/0x980 net/core/sock.c:2914
unix_dgram_sendmsg+0x45e/0x1880 net/unix/af_unix.c:2017
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:733 [inline]
__sys_sendto+0x488/0x4f0 net/socket.c:2187
__do_sys_sendto net/socket.c:2194 [inline]
__se_sys_sendto net/socket.c:2190 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2190
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc7fe23f9b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd5f012628 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc7fe23f9b5
RDX: 0000000000000050 RSI: 0000555f71ca9060 RDI: 0000000000000003
RBP: 0000555f71ca32c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fc7fe3cd212 R14: 00007ffd5f012728 R15: 0000000000000000