INFO: task syz-executor.1:28881 blocked for more than 143 seconds.
Not tainted 5.15.141-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23904 pid:28881 ppid: 3550 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
drop_caches_sysctl_handler+0x83/0x160 fs/drop_caches.c:62
proc_sys_call_handler+0x541/0x8a0 fs/proc/proc_sysctl.c:587
do_iter_readv_writev+0x594/0x7a0
do_iter_write+0x1ea/0x760 fs/read_write.c:855
iter_file_splice_write+0x806/0xfa0 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0xe3/0x1c0 fs/splice.c:936
splice_direct_to_actor+0x500/0xc10 fs/splice.c:891
do_splice_direct+0x285/0x3d0 fs/splice.c:979
do_sendfile+0x625/0xff0 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1311 [inline]
__se_sys_sendfile64+0xfc/0x1e0 fs/read_write.c:1303
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: 0033:0x7f337383aae9
RSP: 002b:00007f3371d9b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f337395a050 RCX: 00007f337383aae9
RDX: 00000000200000c0 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007f337388647a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f337395a050 R15: 00007ffc1af74778
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f0e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3268:
#0: ffff88814b2e0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bab2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz-executor.0/24086:
#0: ffff88807ddda0e0 (&type->s_umount_key#72/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
2 locks held by syz-executor.1/28881:
#0: ffff88807f0a8460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x600/0xff0 fs/read_write.c:1248
#1: ffff88807ddda0e0 (&type->s_umount_key#73){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
2 locks held by syz-executor.1/28963:
#0: ffff88807f0a8460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x600/0xff0 fs/read_write.c:1248
#1: ffff88807ddda0e0 (&type->s_umount_key#73){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
2 locks held by syz-executor.1/29014:
#0: ffff88807f0a8460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x600/0xff0 fs/read_write.c:1248
#1: ffff88807ddda0e0 (&type->s_umount_key#73){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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: 3751 Comm: kworker/u4:14 Not tainted 5.15.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: phy39 ieee80211_iface_work
RIP: 0010:__unwind_start+0x578/0x720 arch/x86/kernel/unwind_orc.c:703
Code: df 48 3b 5c 24 10 77 3f 49 8b 45 00 48 3b 44 24 10 76 34 48 39 5c 24 08 76 2d 48 39 44 24 08 77 26 48 8b 44 24 20 80 3c 10 00 <48> 8b 5c 24 18 74 08 48 89 df e8 69 51 91 00 48 8b 44 24 10 48 39
RSP: 0018:ffffc900043b7380 EFLAGS: 00000246
RAX: 1ffff92000876e83 RBX: ffffc900043b0000 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffc900043b7470 RDI: 0000000000000001
RBP: 1ffff92000876e7d R08: ffffc900043b7470 R09: ffffc900043b7430
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000876e7e
R13: ffffc900043b73f0 R14: ffffc900043b73e0 R15: ffffc900043b73e8
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00429d000 CR3: 0000000075252000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:60 [inline]
arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x168/0x300 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
kzalloc include/linux/slab.h:721 [inline]
ieee802_11_parse_elems_crc+0xb3/0x1130 net/mac80211/util.c:1478
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2238 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x380/0x2af0 net/mac80211/ibss.c:1643
ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
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