INFO: task syz.2.799:9023 blocked for more than 143 seconds.
Not tainted 6.12.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.799 state:D stack:28592 pid:9023 tgid:9010 ppid:7423 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:418 [inline]
do_coredump+0x82f/0x4160 fs/coredump.c:575
get_signal+0x237c/0x26d0 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa1d417dff9
RSP: 002b:00007fa1d4fe70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fa1d4336138 RCX: 00007fa1d417dff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa1d433613c
RBP: 00007fa1d4336130 R08: 00007fa1d502a080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa1d433613c
R13: 0000000000000000 R14: 00007ffe49fce2d0 R15: 00007ffe49fce3b8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by getty/5000:
#0: ffff88814b7c30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz.2.799/9012:
5 locks held by kworker/u8:27/10470:
1 lock held by syz.2.1121/10653:
3 locks held by syz.0.1148/10759:
1 lock held by syz.3.1150/10764:
1 lock held by syz.3.1150/10771:
3 locks held by syz.0.1148/10772:
#0: ffff88806d5ee420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff888067950fd8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff888067950fd8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_compress mm/zswap.c:893 [inline]
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_store+0x737/0x1fe0 mm/zswap.c:1461
1 lock held by syz.3.1150/10773:
3 locks held by syz.0.1148/10778:
#0: ffff88806d5ee420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff8880629eb080 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff8880629eb080 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_compress mm/zswap.c:893 [inline]
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_store+0x737/0x1fe0 mm/zswap.c:1461
3 locks held by syz.0.1148/10779:
#0: ffff88806d5ee420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff8880629eeb48 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff8880629eeb48 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_compress mm/zswap.c:893 [inline]
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_store+0x737/0x1fe0 mm/zswap.c:1461
3 locks held by syz.0.1170/10853:
#0: ffff88806d5ee420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88806c5882c8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88806c5882c8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_compress mm/zswap.c:893 [inline]
#2: ffffe8ffffc17f38 (&acomp_ctx->mutex){+.+.}-{3:3}, at: zswap_store+0x737/0x1fe0 mm/zswap.c:1461
2 locks held by syz.0.1170/10863:
1 lock held by syz.1.1171/10875:
3 locks held by syz.3.1203/10973:
1 lock held by syz.0.1204/10974:
2 locks held by syz.2.1209/10993:
1 lock held by syz.1.1211/10998:
#0: ffff888062d78198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff888062d78198 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x360 mm/util.c:586
2 locks held by syz.1.1211/10999:
1 lock held by syz.2.1212/11000:
#0: ffff88807bd78b18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff88807bd78b18 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x360 mm/util.c:586
1 lock held by syz.2.1212/11001:
1 lock held by syz.2.1212/11002:
#0: ffff88807bd78b18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff88807bd78b18 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x360 mm/util.c:586
1 lock held by syz.2.1212/11003:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10875 Comm: syz.1.1171 Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 7e 60 e8 a3 ff ff ff 31 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 48 8b 15 f4 23 77 7e 65 8b 05 f5 23 77 7e a9 00 01
RSP: 0018:ffffc9000470f2e8 EFLAGS: 00000093
RAX: 0000000000000000 RBX: ffffea000230e8c0 RCX: ffffffff81c568ec
RDX: ffff888026f20000 RSI: ffffffff81c56901 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807bf4a048
R13: 0000000000020101 R14: 0000000000000000 R15: ffff88813fffb540
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f12f31d58 CR3: 0000000011d52000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
folio_flags.constprop.0+0x56/0x150 include/linux/page-flags.h:320
__folio_clear_unevictable include/linux/page-flags.h:590 [inline]
__folio_clear_lru_flags include/linux/mm_inline.h:77 [inline]
__page_cache_release+0x71a/0xe10 mm/swap.c:79
folios_put_refs+0x418/0x750 mm/swap.c:992
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x586/0x1170 mm/shmem.c:1032
shmem_truncate_range mm/shmem.c:1144 [inline]
shmem_evict_inode+0x3a3/0xba0 mm/shmem.c:1272
evict+0x409/0x970 fs/inode.c:723
iput_final fs/inode.c:1875 [inline]
iput fs/inode.c:1901 [inline]
iput+0x530/0x890 fs/inode.c:1887
dentry_unlink_inode+0x29c/0x480 fs/dcache.c:412
__dentry_kill+0x1d0/0x600 fs/dcache.c:615
dput.part.0+0x4b1/0x9b0 fs/dcache.c:857
dput+0x1f/0x30 fs/dcache.c:847
__fput+0x513/0xb60 fs/file_table.c:439
task_work_run+0x14e/0x250 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:939
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
get_signal+0x2658/0x26d0 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x401000
Code: Unable to access opcode bytes at 0x400fd6.
RSP: 002b:000000000000000a EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007f4f12336058 RCX: 00007f4f1217dff9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020003b46
RBP: 00007f4f121f0296 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f12336058 R15: 00007ffdea2b1ca8