INFO: task syz-executor.2:17607 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:22296 pid:17607 ppid:5116 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
io_schedule+0x83/0x100 kernel/sched/core.c:8868
folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1297
btrfs_page_mkwrite+0x41f/0xc80 fs/btrfs/inode.c:8527
do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
wp_page_shared+0x15e/0x380 mm/memory.c:3295
handle_pte_fault mm/memory.c:4949 [inline]
__handle_mm_fault mm/memory.c:5073 [inline]
handle_mm_fault+0x1b79/0x26b0 mm/memory.c:5219
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f57e4e86b2f
RSP: 002b:00007ffe2c796a28 EFLAGS: 00010287
RAX: 00000000200001c0 RBX: 0000000000000000 RCX: 00007f57e4a00000
RDX: 0000000000000010 RSI: 00007f57e4a063f0 RDI: 00000000200001c0
RBP: 00007ffe2c796ae8 R08: 00007f57e4e00000 R09: 00007f57e4a00000
R10: 00007f57e4a063d8 R11: 000000000001f4e6 R12: 00000000000a4e6c
R13: 00007ffe2c796b10 R14: 00007ffe2c796b30 R15: 0000000000000032
INFO: task syz-executor.2:17703 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:21352 pid:17703 ppid:5116 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x577/0x6f0 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1c2/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x533/0xc80 fs/btrfs/inode.c:8537
do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
wp_page_shared+0x15e/0x380 mm/memory.c:3295
handle_pte_fault mm/memory.c:4949 [inline]
__handle_mm_fault mm/memory.c:5073 [inline]
handle_mm_fault+0x1b79/0x26b0 mm/memory.c:5219
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x110 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_short_string+0xd/0x40 arch/x86/lib/copy_user_64.S:233
Code: 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffffc90005b57330 EFLAGS: 00050202
RAX: ffffffff843e8a01 RBX: 00007fffffffefc8 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffc90005b573e0 RDI: 0000000020000120
RBP: ffffc90005b57490 R08: 0000000000000000 R09: fffff52000b6ae83
R10: fffff52000b6ae83 R11: 1ffff92000b6ae7c R12: 0000000000000038
R13: ffffc90005b573e0 R14: 0000000020000120 R15: ffffc90005b573e0
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
_copy_to_user+0xe9/0x130 lib/usercopy.c:34
copy_to_user include/linux/uaccess.h:169 [inline]
fiemap_fill_next_extent+0x22e/0x410 fs/ioctl.c:144
emit_fiemap_extent+0x22d/0x3c0 fs/btrfs/extent_io.c:3458
fiemap_process_hole+0xa00/0xad0 fs/btrfs/extent_io.c:3716
extent_fiemap+0xe27/0x2100 fs/btrfs/extent_io.c:3922
btrfs_fiemap+0x172/0x1e0 fs/btrfs/inode.c:8209
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x185b/0x2980 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
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+0x63/0xcd
RIP: 0033:0x7f57e4e8c0c9
RSP: 002b:00007f57e5b70168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f57e4fac120 RCX: 00007f57e4e8c0c9
RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f57e4ee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe2c7969af R14: 00007f57e5b70300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d327010 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327810 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326e40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by udevd/4433:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9927748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:976
2 locks held by getty/4752:
#0:
ffff888149fa3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1:
ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:6/5165:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90004aefd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
4 locks held by syz-executor.5/8696:
3 locks held by kworker/u4:11/14656:
3 locks held by syz-executor.2/17607:
#0: ffff88807db00158 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff88807db00158 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x2e2/0xcb0 arch/x86/mm/fault.c:1369
#1: ffff88803bf82558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
#2: ffff888038c1c7c8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
3 locks held by syz-executor.2/17703:
#0: ffff88807db00158 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff88807db00158 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x2e2/0xcb0 arch/x86/mm/fault.c:1369
#1: ffff88803bf82558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x19e/0x5e0 mm/memory.c:2947
#2: ffff888038c1c7c8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x417/0xc80 fs/btrfs/inode.c:8526
1 lock held by syz-executor.2/20508:
#0: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
4 locks held by syz-executor.5/20532:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17857 Comm: udevd Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0xa0 kernel/kcov.c:305
Code: 00 00 48 89 f0 48 83 c8 08 48 c7 04 01 03 00 00 00 48 89 f0 48 83 c8 10 48 89 14 01 48 83 ce 18 4c 89 0c 31 4c 89 44 f9 20 c3 <4c> 8b 04 24 65 48 8b 14 25 40 98 03 00 65 8b 0d f4 b7 77 7e f7 c1
RSP: 0018:ffffc9000bdbe858 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
RDX: ffff8880181fba80 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000bdbe970 R08: ffffffff8aabf7f5 R09: ffffffff8aabab6e
R10: 0000000000000012 R11: ffff8880181fba80 R12: ffffc9000bdbecc1
R13: 00000000ffff0a00 R14: 0000000000000000 R15: 0000000000000003
FS: 00007f8701c9d840(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0456446000 CR3: 000000008f08a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
number+0x4de/0x1020 lib/vsprintf.c:518
vsnprintf+0x1388/0x1cb0 lib/vsprintf.c:2862
sprintf+0xc7/0x110 lib/vsprintf.c:3000
print_time kernel/printk/printk.c:1358 [inline]
info_print_prefix+0x153/0x2e0 kernel/printk/printk.c:1384
record_print_text+0x12e/0x430 kernel/printk/printk.c:1433
console_emit_next_record+0x5f7/0x9f0 kernel/printk/printk.c:2808
console_flush_all+0x2d4/0x6f0
console_unlock+0xd9/0x240 kernel/printk/printk.c:2966
vprintk_emit+0xd1/0x1e0 kernel/printk/printk.c:2359
_printk+0xc0/0x100 kernel/printk/printk.c:2380
blk_print_req_error+0x176/0x210 block/blk-mq.c:810
blk_update_request+0xd2e/0x1040 block/blk-mq.c:910
blk_mq_end_request block/blk-mq.c:1053 [inline]
blk_mq_plug_issue_direct+0x2cf/0x650 block/blk-mq.c:2712
blk_mq_flush_plug_list+0xa39/0xb70 block/blk-mq.c:2793
__blk_flush_plug+0x4e5/0x570 block/blk-core.c:1137
blk_finish_plug+0x5a/0x80 block/blk-core.c:1161
read_pages+0x7a8/0x9c0 mm/readahead.c:184
page_cache_ra_unbounded+0x703/0x820 mm/readahead.c:270
do_page_cache_ra mm/readahead.c:300 [inline]
force_page_cache_ra+0x2d6/0x340 mm/readahead.c:331
page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
filemap_get_pages+0x465/0x10d0 mm/filemap.c:2600
filemap_read+0x3cf/0xea0 mm/filemap.c:2694
blkdev_read_iter+0x3de/0x520 block/fops.c:591
call_read_iter include/linux/fs.h:2183 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x7ac/0xbf0 fs/read_write.c:470
ksys_read+0x177/0x2a0 fs/read_write.c:613
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+0x63/0xcd
RIP: 0033:0x7f87019258fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fff7aea3d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f87019258fe
RDX: 0000000000000400 RSI: 000055a2714990e8 RDI: 0000000000000009
RBP: 0000000000000400 R08: 000055a2714990c0 R09: 00007f87019f5a60
R10: 0000000000000008 R11: 0000000000000246 R12: 000055a2714990c0
R13: 000055a2714990d8 R14: 000055a271466110 R15: 000055a2714660c0