INFO: task syz.3.2064:11385 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2064 state:D stack:27952 pid:11385 tgid:11384 ppid:10393 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
page_cache_ra_unbounded+0x12b/0x5a0 mm/readahead.c:225
do_page_cache_ra mm/readahead.c:303 [inline]
page_cache_ra_order+0x6e5/0xae0 mm/readahead.c:547
ondemand_readahead+0x520/0x1140 mm/readahead.c:669
page_cache_sync_ra+0x174/0x1d0 mm/readahead.c:696
page_cache_sync_readahead include/linux/pagemap.h:1306 [inline]
filemap_get_pages+0xc01/0x1830 mm/filemap.c:2529
filemap_splice_read+0x5c3/0xd00 mm/filemap.c:2894
do_splice_read fs/splice.c:985 [inline]
do_splice_read+0x294/0x380 fs/splice.c:959
splice_direct_to_actor+0x2a4/0xa40 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x17e/0x250 fs/splice.c:1233
do_sendfile+0xb1e/0xe50 fs/read_write.c:1295
__do_sys_sendfile64 fs/read_write.c:1362 [inline]
__se_sys_sendfile64 fs/read_write.c:1348 [inline]
__x64_sys_sendfile64+0x1da/0x220 fs/read_write.c:1348
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: 0033:0x7f925ff75bd9
RSP: 002b:00007f9260dac048 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9260103f60 RCX: 00007f925ff75bd9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000006
RBP: 00007f925ffe4aa1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000089ffc R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9260103f60 R15: 00007fffb4658a88
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
5 locks held by kworker/u8:4/61:
2 locks held by getty/4837:
#0: ffff88802acde0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:2H/5295:
1 lock held by syz.1.443/6522:
2 locks held by kworker/u8:2/10873:
#0: ffff88801677d948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223
#1: ffffc900037cfd80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224
1 lock held by syz.3.2064/11385:
#0: ffff88801d8ace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
#0: ffff88801d8ace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x12b/0x5a0 mm/readahead.c:225
1 lock held by syz.3.2608/12984:
#0: ffffffff8dbbcc80 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:4448
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
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:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x60 kernel/kcov.c:207
Code: 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 64 f4 75 7e 65 8b 05 65 f4 75 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 <8b> 82 1c 16 00 00 85 c0 74 2b 8b 82 f8 15 00 00 83 f8 02 75 20 48
RSP: 0018:ffffc900001577d8 EFLAGS: 00000202
RAX: 0000000080000101 RBX: ffffffff8ffcc8c4 RCX: ffffffff813ccc24
RDX: ffff8880176bda00 RSI: ffffffff813ccbd0 RDI: 0000000000000006
RBP: ffffffff8ffcc8e0 R08: 0000000000000006 R09: ffffffff81e9a5ca
R10: ffffffff81e9a566 R11: 0000000000000002 R12: ffffffff81e9a5ca
R13: ffffffff81e9a566 R14: dffffc0000000000 R15: ffffffff8ffcc8c0
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdfd1ad0ab8 CR3: 000000007cc76000 CR4: 00000000003526f0
DR0: 0000000000000007 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__orc_find+0x70/0x130 arch/x86/kernel/unwind_orc.c:99
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
rcu_do_batch kernel/rcu/tree.c:2535 [inline]
rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2809
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
run_ksoftirqd kernel/softirq.c:928 [inline]
run_ksoftirqd+0x3a/0x60 kernel/softirq.c:920
smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244