INFO: task syz.2.5381:27392 blocked for more than 143 seconds.
Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.5381 state:D stack:25160 pid:27392 tgid:27392 ppid:17496 task_flags:0x440040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
rwsem_down_read_slowpath+0x552/0x880 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x98/0x2e0 kernel/locking/rwsem.c:1526
filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
do_sync_mmap_readahead+0x4b5/0x5f0 mm/filemap.c:3271
filemap_fault+0x62a/0x1200 mm/filemap.c:3412
__do_fault+0x138/0x390 mm/memory.c:5189
do_cow_fault mm/memory.c:5640 [inline]
do_fault mm/memory.c:5746 [inline]
do_pte_missing mm/memory.c:4251 [inline]
handle_pte_fault mm/memory.c:6089 [inline]
__handle_mm_fault+0x185b/0x5620 mm/memory.c:6232
handle_mm_fault+0x40a/0x8e0 mm/memory.c:6401
do_user_addr_fault+0xa81/0x1390 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fea57854fc1
RSP: 002b:00007fea57cdfb50 EFLAGS: 00010246
RAX: 0000200000000000 RBX: 0000000000000104 RCX: 0000000000000001
RDX: 000000000100007f RSI: 0000000000000000 RDI: 0000555570f833c8
RBP: 00007fea57cdfc58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000004 R12: 00007fea57bb608c
R13: 00007fea57bb6080 R14: fffffffffffffffe R15: 00007fea57cdfca0
INFO: task syz.2.5381:27393 blocked for more than 144 seconds.
Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.5381 state:D stack:25944 pid:27393 tgid:27392 ppid:17496 task_flags:0x440140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
rwsem_down_read_slowpath+0x552/0x880 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x98/0x2e0 kernel/locking/rwsem.c:1526
filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
do_sync_mmap_readahead+0x4b5/0x5f0 mm/filemap.c:3271
filemap_fault+0x62a/0x1200 mm/filemap.c:3412
__do_fault+0x138/0x390 mm/memory.c:5189
do_cow_fault mm/memory.c:5640 [inline]
do_fault mm/memory.c:5746 [inline]
do_pte_missing mm/memory.c:4251 [inline]
handle_pte_fault mm/memory.c:6089 [inline]
__handle_mm_fault+0x185b/0x5620 mm/memory.c:6232
handle_mm_fault+0x40a/0x8e0 mm/memory.c:6401
do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_4+0xd/0x20 arch/x86/lib/putuser.S:94
Code: 66 89 01 31 c9 0f 01 ca e9 00 32 03 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca e9 d7 31 03 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003b1fc98 EFLAGS: 00050202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00002000000bed38
RDX: 0000000000000000 RSI: ffffffff8db6dd50 RDI: ffffffff8be28300
RBP: ffffc90003b1feb0 R08: 0000000000000000 R09: ffffffff820c4de0
R10: dffffc0000000000 R11: ffffed1009d6fd79 R12: 00002000000bed00
R13: 0000000000040000 R14: 00002000000bd000 R15: 0000000000000074
__sys_sendmmsg+0x25f/0x430 net/socket.c:2714
__do_sys_sendmmsg net/socket.c:2736 [inline]
__se_sys_sendmmsg net/socket.c:2733 [inline]
__x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2733
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea5798e929
RSP: 002b:00007fea5886c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fea57bb5fa0 RCX: 00007fea5798e929
RDX: 0000000000000318 RSI: 00002000000bd000 RDI: 0000000000000008
RBP: 00007fea57a10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fea57bb5fa0 R15: 00007fea57cdfa28
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by getty/5600:
#0: ffff8880354ea0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
3 locks held by kworker/u8:5/21287:
#0: ffff8880b863b918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:614
#1: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39a/0x6d0 kernel/sched/psi.c:987
#2: ffff88804bdf8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline]
#2: ffff88804bdf8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xc4/0x460 net/wireless/core.c:421
2 locks held by kworker/u8:7/25965:
#0: ffff8880b863b918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:614
#1: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39a/0x6d0 kernel/sched/psi.c:987
2 locks held by syz.3.5219/26781:
1 lock held by syz.2.5381/27392:
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
1 lock held by syz.2.5381/27393:
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
1 lock held by syz.0.5589/28180:
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
1 lock held by syz.7.5592/28193:
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff888022ce6540 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x445/0xc70 mm/readahead.c:491
2 locks held by rm/29216:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 29217 Comm: rm Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__lock_acquire+0xad3/0xd20 kernel/locking/lockdep.c:5248
Code: 01 00 00 4c 89 f6 89 ea 4c 89 f9 e8 17 38 00 00 85 c0 0f 84 e4 01 00 00 41 f6 46 22 10 75 2e 48 8b 1c 24 4c 89 bb e0 0a 00 00 <8b> 83 e8 0a 00 00 ff c0 89 83 e8 0a 00 00 83 f8 30 0f 83 64 01 00
RSP: 0018:ffffc90004bbe2e8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff88802c589e00 RCX: f30d5281e1ec7d00
RDX: 0000000000000000 RSI: ffff88802c58a968 RDI: ffff88802c589e00
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81729de5
R10: ffffc90004bbe538 R11: ffffffff81acf990 R12: 000000000e4dfb26
R13: ffff88802c58a8f0 R14: ffff88802c58a968 R15: ff96318f551cad74
FS: 00007f9ca95ccc80(0000) GS:ffff888125c52000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ca97a0a90 CR3: 0000000086d2a000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548
__call_rcu_common kernel/rcu/tree.c:3090 [inline]
call_rcu+0x142/0x990 kernel/rcu/tree.c:3210
ma_free_rcu lib/maple_tree.c:211 [inline]
mas_topiary_node lib/maple_tree.c:2521 [inline]
mas_topiary_replace lib/maple_tree.c:2622 [inline]
mas_wmb_replace+0x10d8/0x25f0 lib/maple_tree.c:2645
mas_split lib/maple_tree.c:3384 [inline]
mas_commit_b_node+0xabf/0xf70 lib/maple_tree.c:3404
mas_wr_bnode lib/maple_tree.c:4073 [inline]
mas_wr_store_entry+0x50f/0x25b0 lib/maple_tree.c:4105
mas_store_prealloc+0xb00/0xf60 lib/maple_tree.c:5506
vma_iter_store_new mm/vma.h:462 [inline]
vma_complete+0x224/0xae0 mm/vma.c:351
__split_vma+0x8a6/0xa00 mm/vma.c:565
split_vma mm/vma.c:595 [inline]
vma_modify+0x9db/0x1970 mm/vma.c:1640
vma_modify_flags+0x1e8/0x230 mm/vma.c:1658
mprotect_fixup+0x400/0x9b0 mm/mprotect.c:658
do_mprotect_pkey+0x8cd/0xce0 mm/mprotect.c:832
__do_sys_mprotect mm/mprotect.c:853 [inline]
__se_sys_mprotect mm/mprotect.c:850 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:850
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9ca99632c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffd4b071c18 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f9ca9937b20 RCX: 00007f9ca99632c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f9ca9693000
RBP: 00007ffd4b071ee0 R08: 0000000000000000 R09: 00007f9ca96cd2e0
R10: 00007f9ca9937b20 R11: 0000000000000206 R12: 0000000000000018
R13: 000003bf7e935d8a R14: 0000000000000000 R15: 00007f9ca9977310