INFO: task syz.6.1705:10691 blocked for more than 143 seconds.
Not tainted 5.15.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1705 state:D stack:24376 pid:10691 ppid: 8127 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
io_schedule+0x88/0x100 kernel/sched/core.c:8481
wait_on_page_bit_common+0xa13/0x1180 mm/filemap.c:1356
lock_page include/linux/pagemap.h:625 [inline]
pickup_page_for_submission fs/erofs/zdata.c:1135 [inline]
z_erofs_submit_queue fs/erofs/zdata.c:1306 [inline]
z_erofs_runqueue+0x788/0x1a80 fs/erofs/zdata.c:1367
z_erofs_readahead+0xc9a/0x1280 fs/erofs/zdata.c:1459
read_pages+0x159/0x8e0 mm/readahead.c:130
page_cache_ra_unbounded+0x7b0/0x930 mm/readahead.c:239
do_page_cache_ra mm/readahead.c:269 [inline]
force_page_cache_ra+0x378/0x3e0 mm/readahead.c:301
force_page_cache_readahead mm/internal.h:59 [inline]
generic_fadvise+0x5ba/0x8b0 mm/fadvise.c:107
vfs_fadvise mm/fadvise.c:186 [inline]
ksys_fadvise64_64 mm/fadvise.c:200 [inline]
__do_sys_fadvise64 mm/fadvise.c:215 [inline]
__se_sys_fadvise64 mm/fadvise.c:213 [inline]
__x64_sys_fadvise64+0x138/0x180 mm/fadvise.c:213
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5f1f084719
RSP: 002b:00007f5f1d4fc038 EFLAGS: 00000246 ORIG_RAX: 00000000000000dd
RAX: ffffffffffffffda RBX: 00007f5f1f23bf80 RCX: 00007f5f1f084719
RDX: 0000000000004101 RSI: 0000000000e0ffff RDI: 0000000000000005
RBP: 00007f5f1f0f739e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5f1f23bf80 R15: 00007ffe9df78638
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3925:
#0: ffff88814d0e8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz.6.1705/10691:
#0: ffff88805e6e8320 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:844 [inline]
#0: ffff88805e6e8320 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x1a6/0x930 mm/readahead.c:195
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.170-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 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:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12493 Comm: syz.7.2202 Not tainted 5.15.170-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4541 [inline]
RIP: 0010:__lock_acquire+0xdce/0x1ff0 kernel/locking/lockdep.c:4996
Code: 84 c0 0f 85 54 0b 00 00 41 8b 5d 00 48 85 db 48 8b 0c 24 74 56 83 fb 31 0f 83 43 10 00 00 48 8d 04 9b 48 8d 5c c1 f8 48 89 d8 <48> c1 e8 03 0f b6 04 38 84 c0 0f 85 87 0c 00 00 8b 1b 48 8b 44 24
RSP: 0018:ffffc90003897080 EFLAGS: 00000087
RAX: ffff88802734a8f8 RBX: ffff88802734a8f8 RCX: ffff88802734a8b0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff88802734a8a0 R08: dffffc0000000000 R09: fffffbfff20ec629
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: ffff88802734a8a8 R14: 1ffff11004e69514 R15: 0e027cdaccf45f7d
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f859a3c8338 CR3: 000000001fe7a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
lock_page_memcg+0x243/0x4d0 mm/memcontrol.c:2055
page_remove_rmap+0x2a/0x11e0 mm/rmap.c:1351
zap_pte_range mm/memory.c:1373 [inline]
zap_pmd_range mm/memory.c:1494 [inline]
zap_pud_range mm/memory.c:1523 [inline]
zap_p4d_range mm/memory.c:1544 [inline]
unmap_page_range+0xffa/0x2630 mm/memory.c:1565
unmap_vmas+0x1f8/0x390 mm/memory.c:1642
exit_mmap+0x3b6/0x670 mm/mmap.c:3186
__mmput+0x112/0x3b0 kernel/fork.c:1126
exit_mm+0x688/0x7f0 kernel/exit.c:550
do_exit+0x626/0x2480 kernel/exit.c:861
do_group_exit+0x144/0x310 kernel/exit.c:996
get_signal+0xc66/0x14e0 kernel/signal.c:2900
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbbc1742719
Code: Unable to access opcode bytes at RIP 0x7fbbc17426ef.
RSP: 002b:00007fbbbfb99038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007fbbc18fa058 RCX: 00007fbbc1742719
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007fbbc17b539e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fbbc18fa058 R15: 00007ffef9e59248