INFO: task syz.0.16:4759 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack: 0 pid: 4759 ppid: 4713 flags:0x00000009 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xe20/0x1c6c kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 io_schedule+0x84/0x160 kernel/sched/core.c:8503 wait_on_page_bit_common+0x658/0xab4 mm/filemap.c:1356 __lock_page+0x8c/0xa8 mm/filemap.c:1648 lock_page include/linux/pagemap.h:625 [inline] pickup_page_for_submission fs/erofs/zdata.c:1149 [inline] z_erofs_submit_queue fs/erofs/zdata.c:1320 [inline] z_erofs_runqueue+0x5ec/0x1364 fs/erofs/zdata.c:1381 z_erofs_readahead+0x814/0xbbc fs/erofs/zdata.c:1473 read_pages+0x138/0x42c mm/readahead.c:130 page_cache_ra_unbounded+0x51c/0x608 mm/readahead.c:239 do_page_cache_ra mm/readahead.c:269 [inline] force_page_cache_ra+0x320/0x384 mm/readahead.c:301 force_page_cache_readahead mm/internal.h:78 [inline] generic_fadvise+0x418/0x684 mm/fadvise.c:107 vfs_fadvise mm/fadvise.c:186 [inline] ksys_fadvise64_64 mm/fadvise.c:200 [inline] __do_sys_fadvise64_64 mm/fadvise.c:208 [inline] __se_sys_fadvise64_64 mm/fadvise.c:206 [inline] __arm64_sys_fadvise64_64+0x130/0x178 mm/fadvise.c:206 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x5c/0x140 arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d4 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff800014591520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:312 2 locks held by kworker/u4:4/403: 1 lock held by klogd/3650: 2 locks held by getty/3805: #0: ffff0000d3b57098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001ba532e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xf90 drivers/tty/n_tty.c:2158 1 lock held by syz.0.16/4759: #0: ffff0000e2688320 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e2688320 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.1.17/4789: #0: ffff0000e2688da0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e2688da0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.2.18/4807: #0: ffff0000e2408860 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e2408860 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.3.19/4824: #0: ffff0000e24092e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e24092e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.4.20/4851: #0: ffff0000e26892e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e26892e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.5.21/4884: #0: ffff0000e2409d60 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e2409d60 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.6.22/4910: #0: ffff0000e240a7e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e240a7e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.7.23/4936: #0: ffff0000e2689d60 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e2689d60 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.8.24/4962: #0: ffff0000e268a7e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e268a7e0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 1 lock held by syz.9.25/4995: #0: ffff0000e240b260 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline] #0: ffff0000e240b260 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x154/0x608 mm/readahead.c:195 =============================================