INFO: task syz-executor.0:2324 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #23
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D28872  2324   2321 0x20020000
 ffff8801c7bb0000 0000000000000000 ffff8801c798e880 ffff8801c81bdf00
 ffff8801db621018 ffff8801c77779f0 ffffffff828075c2 ffff880100000002
 ffffffff00000000 fffffbfff08489a8 006c4a5000000001 ffff8801db6218f0
Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828142d5>] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771
 [<ffffffff81d4312c>] down_read_failed drivers/tty/tty_ldsem.c:241 [inline]
 [<ffffffff81d4312c>] __ldsem_down_read_nested+0x33c/0x610 drivers/tty/tty_ldsem.c:332
 [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 [<ffffffff81d3ca85>] tty_ldisc_ref_wait+0x25/0x80 drivers/tty/tty_ldisc.c:275
 [<ffffffff81d22005>] tty_poll+0xc5/0x190 drivers/tty/tty_io.c:2232
 [<ffffffff815efcff>] ep_item_poll fs/eventpoll.c:811 [inline]
 [<ffffffff815efcff>] ep_insert fs/eventpoll.c:1347 [inline]
 [<ffffffff815efcff>] SYSC_epoll_ctl fs/eventpoll.c:1975 [inline]
 [<ffffffff815efcff>] SyS_epoll_ctl+0x119f/0x25d0 fs/eventpoll.c:1861
 [<ffffffff81006311>] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline]
 [<ffffffff81006311>] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390
 [<ffffffff82818de0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2025:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2321:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2324:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2328:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2331:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2335:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2337:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2342:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2345:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2349:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2350:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2357:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2361:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2364:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2367:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2370:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2374:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2378:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2379:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2384:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2389:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2391:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2394:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2398:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2402:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2405:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2408:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2413:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2417:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2419:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2422:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2426:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2430:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2433:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2436:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2440:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2442:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2462:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2464:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2469:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2473:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2475:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2478:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2483:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2486:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2490:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2494:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2497:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2500:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2503:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2507:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2510:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2514:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2517:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2519:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2523:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2527:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2530:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2533:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2538:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2542:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2544:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2546:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2552:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2555:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2559:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2563:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2572:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2577:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2580:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2582:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2586:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2589:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2594:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2596:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2600:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2604:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2607:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2610:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2614:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2617:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2622:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2624:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2629:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2635:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2638:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2643:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2644:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2650:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2653:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2656:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2659:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2663:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2667:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2671:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2672:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2678:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2680:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2685:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2689:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2692:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2695:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2698:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2702:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2706:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2708:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2712:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2715:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2719:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2723:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2726:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2728:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2733:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2736:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2740:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2742:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2747:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2749:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2754:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2756:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2761:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2763:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2768:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2771:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2775:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2777:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2782:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2784:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2789:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2790:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2796:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2798:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2803:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2805:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2810:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2812:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2816:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2819:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2823:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2825:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2837:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2840:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2843:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2845:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2850:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2853:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2857:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2861:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2864:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2866:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2870:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2873:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2878:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2880:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2884:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2887:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2892:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2896:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2898:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2902:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2906:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2908:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2912:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2915:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2919:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2921:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2927:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2930:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2934:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2936:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2941:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2944:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2947:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2950:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2954:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2955:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2961:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2964:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2968:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2972:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2975:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2979:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2982:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2985:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2989:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2993:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/2996:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/2999:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3003:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3005:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3017:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3020:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3024:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3027:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3031:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3033:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3038:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3040:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3045:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3049:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3051:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3055:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3058:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3061:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3065:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3068:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3073:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3075:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3080:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3083:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3087:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3089:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3094:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3096:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3101:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3105:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3107:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3110:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3115:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3118:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3122:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3123:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3128:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3132:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3142:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3146:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3149:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3150:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3156:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3158:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3163:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3165:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3170:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3173:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3176:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3179:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3184:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3187:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3191:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3194:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3197:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3200:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3205:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3207:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3212:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3215:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3226:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3228:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3233:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3235:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3240:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3242:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3247:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3251:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3254:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3257:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3261:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3264:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3275:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3278:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3282:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3286:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3289:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3291:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3296:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3300:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3303:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3305:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3309:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3312:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3317:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3319:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3331:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3334:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3338:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3340:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3345:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3347:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3351:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3354:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3358:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3362:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3366:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3368:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3372:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3375:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3380:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3383:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3386:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3389:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3393:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3396:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3401:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3403:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3408:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3410:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3415:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3418:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3422:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3424:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3429:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3430:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3436:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3438:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3443:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3444:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3450:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3452:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3457:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3459:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3464:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3468:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3471:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3475:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3478:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3481:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3485:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3488:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3492:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3494:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3499:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3501:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3505:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3509:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3512:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3517:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3519:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3522:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3527:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3529:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3533:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3538:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3541:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3543:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3548:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3551:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3555:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3557:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3562:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3564:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3568:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3571:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3575:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3580:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3582:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3583:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3590:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3593:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3597:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3600:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3603:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3606:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3611:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3613:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3618:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3619:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3625:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3628:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3632:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3635:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3639:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3642:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3645:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3648:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3660:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3662:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3667:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3669:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3674:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3677:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3688:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3692:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3695:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3698:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3702:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3705:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3709:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3711:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3716:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3719:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3723:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3727:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3737:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3740:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3744:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3747:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3751:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3755:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3758:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3760:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3765:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3767:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3772:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3774:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3779:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3782:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3786:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3789:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3793:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3796:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3800:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3804:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3807:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3810:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3814:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3817:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3821:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3825:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3828:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3831:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3835:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.0/3837:
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SYSC_epoll_ctl fs/eventpoll.c:1939 [inline]
 #0:  (&ep->mtx){+.+.+.}, at: [<ffffffff815ef3d9>] SyS_epoll_ctl+0x879/0x25d0 fs/eventpoll.c:1861
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
2 locks held by syz-executor.0/3842:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367