INFO: task syz.3.1574:13110 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00046-g7ec462100ef9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1574 state:D stack:25360 pid:13110 tgid:13109 ppid:12595 flags:0x00000004
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: 0033:0x7fa67057dff9
RSP: 002b:00007fa6713e70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fa670735f88 RCX: 00007fa67057dff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa670735f8c
RBP: 00007fa670735f80 R08: 00007fa6713e8080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa670735f8c
R13: 0000000000000000 R14: 00007fffc4a8d910 R15: 00007fffc4a8d9f8
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
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/5003:
#0: ffff88814b1ce0a0 (&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
4 locks held by kworker/u8:13/10080:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc9000322fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8faace10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffffffff8ddc3178 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
2 locks held by kworker/u8:18/10089:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc9000344fd80 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
2 locks held by kworker/u8:39/11372:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90003f37d80 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
1 lock held by syz.3.1574/13116:
2 locks held by syz.1.2011/15334:
3 locks held by syz.2.2031/15382:
3 locks held by syz.2.2031/15383:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff8880819a3708 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff8880819a3708 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffff8880b863ee98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:593
3 locks held by syz.2.2031/15384:
2 locks held by syz.2.2031/15393:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88807f4bd7b0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88807f4bd7b0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
3 locks held by syz.2.2031/15394:
3 locks held by syz.2.2031/15397:
3 locks held by syz.2.2031/15404:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88807f4bde38 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88807f4bde38 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffff8880b863ee98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:593
3 locks held by syz.2.2031/15405:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88802034a9f8 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88802034a9f8 (&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.2.2031/15406:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88802034f858 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88802034f858 (&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.2.2031/15407:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88802034c418 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88802034c418 (&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.2.2031/15408:
2 locks held by syz.2.2031/15409:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88802034e4c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88802034e4c0 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
3 locks held by syz.2.2031/15410:
#0: ffff888077e78420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x237c/0x26d0 kernel/signal.c:2902
#1: ffff88802034b080 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88802034b080 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3211
#2: ffff8880b863ee98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:593
2 locks held by syz.3.2043/15494:
1 lock held by syz.2.2049/15495:
#0: ffff888060359a08 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#0: ffff888060359a08 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x270 net/socket.c:657
1 lock held by syz.2.2049/15496:
#0: ffffffff8dee3788 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x6f0 mm/swap.c:843
1 lock held by syz.3.2056/15525:
#0: ffff888077092008 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#0: ffff888077092008 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x270 net/socket.c:657
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00046-g7ec462100ef9 #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: 15397 Comm: syz.2.2031 Not tainted 6.12.0-rc1-syzkaller-00046-g7ec462100ef9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_template lib/842/842_compress.c:393 [inline]
RIP: 0010:process_next lib/842/842_compress.c:456 [inline]
RIP: 0010:sw842_compress+0x28da/0x45c0 lib/842/842_compress.c:543
Code: 85 62 15 00 00 48 8b 44 24 38 8b 50 38 69 ea 47 86 c8 61 c1 ed 15 49 8d bc ef 68 20 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 <0f> 85 e0 15 00 00 49 8b ac ef 68 20 00 00 48 85 ed 0f 84 cf 00 00
RSP: 0018:ffffc900098059e0 EFLAGS: 00000246
RAX: 1ffff11006568b1d RBX: ffffffff8e91ae45 RCX: ffffffff848eb98b
RDX: 00000000d91ec02e RSI: ffffffff848ec34f RDI: ffff888032b458e8
RBP: 0000000000000710 R08: 0000000000000005 R09: 00000000fffffffe
R10: 00000000fffffffe R11: ffff888032b40030 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888032b40000
FS: 00007fbe2f8a16c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555704fb5c8 CR3: 0000000076560000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
crypto_scomp_decompress include/crypto/internal/scompress.h:97 [inline]
scomp_acomp_comp_decomp+0x3f8/0x920 crypto/scompress.c:155
crypto_acomp_compress include/crypto/acompress.h:251 [inline]
zswap_compress mm/zswap.c:919 [inline]
zswap_store+0x952/0x1fe0 mm/zswap.c:1461
swap_writepage+0x3b6/0x990 mm/page_io.c:271
shmem_writepage+0xf8f/0x14b0 mm/shmem.c:1567
pageout+0x3b2/0xaa0 mm/vmscan.c:688
shrink_folio_list+0x3025/0x42d0 mm/vmscan.c:1366
evict_folios+0x6d6/0x1970 mm/vmscan.c:4583
try_to_shrink_lruvec+0x612/0x9b0 mm/vmscan.c:4778
lru_gen_shrink_lruvec mm/vmscan.c:4920 [inline]
shrink_lruvec+0x2d2/0x28e0 mm/vmscan.c:5675
shrink_node_memcgs mm/vmscan.c:5911 [inline]
shrink_node mm/vmscan.c:5951 [inline]
shrink_node+0x89c/0x39d0 mm/vmscan.c:5930
shrink_zones mm/vmscan.c:6195 [inline]
do_try_to_free_pages+0x35f/0x1a30 mm/vmscan.c:6257
try_to_free_mem_cgroup_pages+0x31a/0x7f0 mm/vmscan.c:6589
try_charge_memcg+0x356/0xaf0 mm/memcontrol.c:2207
try_charge mm/memcontrol-v1.h:19 [inline]
charge_memcg mm/memcontrol.c:4468 [inline]
__mem_cgroup_charge+0x9b/0x280 mm/memcontrol.c:4483
mem_cgroup_charge include/linux/memcontrol.h:694 [inline]
shmem_alloc_and_add_folio+0x507/0xc00 mm/shmem.c:1823
shmem_get_folio_gfp+0x689/0x1530 mm/shmem.c:2335
shmem_get_folio mm/shmem.c:2441 [inline]
shmem_write_begin+0x161/0x300 mm/shmem.c:3046
generic_perform_write+0x2ba/0x920 mm/filemap.c:4054
shmem_file_write_iter+0x10e/0x140 mm/shmem.c:3221
__kernel_write_iter+0x318/0xa80 fs/read_write.c:616
dump_emit_page fs/coredump.c:884 [inline]
dump_user_range+0x389/0x8a0 fs/coredump.c:945
elf_core_dump+0x2766/0x3840 fs/binfmt_elf.c:2121
do_coredump+0x2c42/0x4160 fs/coredump.c:758
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]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000000000807 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fbe2ed362e0 RCX: 00007fbe2eb7dff9
RDX: 0000000000000000 RSI: 00000000000007ff RDI: 000000000000b79e
RBP: 00007fbe2ebf0296 R08: 0000000080000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbe2ed362e0 R15: 00007ffed0141478