INFO: task syz.2.154:7112 blocked for more than 143 seconds.
Not tainted 6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.154 state:D stack:22992 pid:7112 tgid:7112 ppid:5838 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
__bch2_two_state_lock+0x229/0x2c0 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_page_mkwrite+0x444/0x1060 fs/bcachefs/fs-io-pagecache.c:623
do_page_mkwrite+0x15c/0x350 mm/memory.c:3256
wp_page_shared mm/memory.c:3657 [inline]
do_wp_page+0x23cd/0x49b0 mm/memory.c:3807
handle_pte_fault mm/memory.c:5904 [inline]
__handle_mm_fault+0x2303/0x6ef0 mm/memory.c:6031
handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6200
do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f468d154eab
RSP: 002b:00007ffdf1674638 EFLAGS: 00010202
RAX: 0000400000000040 RBX: 0000000000000004 RCX: 0000000000746166
RDX: 0000000000000006 RSI: 0000000061667865 RDI: 0000400000000040
RBP: 00007f468d3a7ba0 R08: 00007f468d000000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f468d3a5fac
R13: 00007ffdf1674730 R14: fffffffffffffffe R15: 00007ffdf1674750
INFO: task syz.2.154:7114 blocked for more than 143 seconds.
Not tainted 6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.154 state:D stack:13968 pid:7114 tgid:7112 ppid:5838 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
io_schedule+0x8d/0x110 kernel/sched/core.c:7690
folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1317
folio_lock include/linux/pagemap.h:1163 [inline]
bch2_mark_pagecache_unallocated+0x3f3/0x9b0 fs/bcachefs/fs-io-pagecache.c:275
bch2_remap_file_range+0x7d3/0xf70 fs/bcachefs/fs-io.c:907
vfs_copy_file_range+0xc07/0x14f0 fs/read_write.c:1584
__do_sys_copy_file_range fs/read_write.c:1670 [inline]
__se_sys_copy_file_range+0x3fa/0x600 fs/read_write.c:1637
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f468d18d169
RSP: 002b:00007f468dfd2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f468d3a5fa0 RCX: 00007f468d18d169
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007f468d20e2a0 R08: 0000000000400000 R09: 0000000000000000
R10: 00004000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f468d3a5fa0 R15: 00007ffdf16744d8
INFO: task syz.2.154:7143 blocked for more than 144 seconds.
Not tainted 6.14.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.154 state:D stack:15152 pid:7143 tgid:7112 ppid:5838 task_flags:0x440140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
__bch2_two_state_lock+0x229/0x2c0 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_readahead+0x9e1/0x1240 fs/bcachefs/fs-io-buffered.c:272
read_pages+0x179/0x570 mm/readahead.c:160
page_cache_ra_order+0xa36/0xca0 mm/readahead.c:515
filemap_readahead mm/filemap.c:2548 [inline]
filemap_get_pages+0x9e4/0x1fb0 mm/filemap.c:2593
filemap_splice_read+0x68e/0xef0 mm/filemap.c:2969
do_splice_read fs/splice.c:985 [inline]
splice_direct_to_actor+0x4af/0xc80 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x289/0x3e0 fs/splice.c:1233
vfs_copy_file_range+0xd1f/0x14f0 fs/read_write.c:1620
__do_sys_copy_file_range fs/read_write.c:1670 [inline]
__se_sys_copy_file_range+0x3fa/0x600 fs/read_write.c:1637
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f468d18d169
RSP: 002b:00007f468dfb1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f468d3a6080 RCX: 00007f468d18d169
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f468d20e2a0 R08: 0000000000400000 R09: 0000000000000000
R10: 00004000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f468d3a6080 R15: 00007ffdf16744d8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by dhcpcd/5492:
2 locks held by getty/5581:
#0: ffff888035a6a0a0 (&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+0x616/0x1770 drivers/tty/n_tty.c:2211
2 locks held by syz.2.154/7112:
#0: ffff88804c47dd18 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff88804c47dd18 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6366
#1: ffff88805e98e518 (sb_pagefaults#4){.+.+}-{0:0}, at: do_page_mkwrite+0x15c/0x350 mm/memory.c:3256
2 locks held by syz.2.154/7114:
#0: ffff88805e98e420 (sb_writers#14){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3035 [inline]
#0: ffff88805e98e420 (sb_writers#14){.+.+}-{0:0}, at: vfs_copy_file_range+0x9d2/0x14f0 fs/read_write.c:1572
#1: ffff88806fbaaed8 (&sb->s_type->i_mutex_key#24){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff88806fbaaed8 (&sb->s_type->i_mutex_key#24){++++}-{4:4}, at: lock_two_nondirectories+0xe1/0x170 fs/inode.c:1281
1 lock held by syz.2.154/7143:
#0: ffff88806fbab078 (mapping.invalidate_lock#8){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff88806fbab078 (mapping.invalidate_lock#8){.+.+}-{4:4}, at: page_cache_ra_order+0x45d/0xca0 mm/readahead.c:491
1 lock held by sed/10281:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc7-syzkaller #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+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/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: 10287 Comm: rm Not tainted 6.14.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:147 [inline]
RIP: 0010:lock_is_held_type+0x11c/0x190 kernel/locking/lockdep.c:5925
Code: 00 00 00 48 c7 c7 e0 c5 2a 8c e8 7f 1a 00 00 b8 ff ff ff ff 65 0f c1 05 62 98 01 74 83 f8 01 75 44 48 c7 04 24 00 00 00 00 9c <8f> 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb
RSP: 0000:ffffc9000ae8f870 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff8c2ac5e0 RDI: ffffffff8c802e20
RBP: 0000000000000002 R08: ffffffff94517847 R09: 1ffffffff28a2f08
R10: dffffc0000000000 R11: fffffbfff28a2f09 R12: 0000000000000246
R13: ffff88804cfb9e00 R14: 00000000ffffffff R15: ffffffff8eb39360
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f18aa35c3cc CR3: 0000000047af2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
rcu_read_lock_sched_held+0x8d/0x130 kernel/rcu/update.c:126
task_css include/linux/cgroup.h:434 [inline]
mem_cgroup_from_task+0x4d/0x120 mm/memcontrol.c:892
get_mem_cgroup_from_mm+0xd7/0x2a0 mm/memcontrol.c:945
__mem_cgroup_charge+0x16/0x80 mm/memcontrol.c:4504
mem_cgroup_charge include/linux/memcontrol.h:644 [inline]
folio_prealloc+0x4f/0x170 mm/memory.c:1067
alloc_anon_folio mm/memory.c:4834 [inline]
do_anonymous_page mm/memory.c:4891 [inline]
do_pte_missing mm/memory.c:4057 [inline]
handle_pte_fault mm/memory.c:5888 [inline]
__handle_mm_fault+0x32e6/0x6ef0 mm/memory.c:6031
handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6200
do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f18aa676a92
Code: 57 06 41 89 d0 89 d0 41 81 e0 ff 7f 00 00 66 25 ff 7f 44 39 c5 76 2f 0f b7 c0 81 e2 00 80 00 00 44 8b 07 48 6b c0 18 48 01 c8 <89> 50 0c 8b 57 08 48 03 14 24 44 89 40 08 48 89 10 8b 56 04 48 03
RSP: 002b:00007ffd1b4177c0 EFLAGS: 00010206
RAX: 00007f18aa35c3c0 RBX: 00007f18aa65e5c0 RCX: 00007f18aa35c000
RDX: 0000000000000000 RSI: 00007f18aa40a218 RDI: 00007f18aa40a228
RBP: 0000000000000029 R08: 0000000009691a75 R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000246 R12: 00007f18aa40a218
R13: 00007f18aa40a248 R14: 00007f18aa695ab0 R15: 00007f18aa58bb10