syzbot


INFO: task can't die in __blk_mq_delay_run_hw_queue

Status: auto-closed as invalid on 2021/10/10 02:23
Reported-by: syzbot+3f8a87508cd62a717029@syzkaller.appspotmail.com
First crash: 482d, last: 482d

Sample crash report:
INFO: task syz-executor.0:23508 can't die for more than 143 seconds.
task:syz-executor.0  state:R  running task     stack:24584 pid:23508 ppid: 22131 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4698 [inline]
 __schedule+0x93a/0x26f0 kernel/sched/core.c:5955
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6115
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35
 __blk_mq_delay_run_hw_queue+0x573/0x640 block/blk-mq.c:1578
 blk_mq_run_hw_queue+0x16c/0x2f0 block/blk-mq.c:1630
 blk_mq_sched_insert_requests+0x1d5/0x680 block/blk-mq-sched.c:513
 blk_mq_flush_plug_list+0x3d8/0x560 block/blk-mq.c:1955
 blk_flush_plug_list block/blk-core.c:1719 [inline]
 blk_finish_plug block/blk-core.c:1736 [inline]
 blk_finish_plug+0x83/0xe0 block/blk-core.c:1732
 read_pages+0x737/0xfa0 mm/readahead.c:150
 page_cache_ra_unbounded+0x4c2/0x940 mm/readahead.c:225
 do_page_cache_ra+0xf9/0x140 mm/readahead.c:269
 do_sync_mmap_readahead mm/filemap.c:2988 [inline]
 filemap_fault+0x1553/0x2780 mm/filemap.c:3081
 __do_fault+0x10d/0x4f0 mm/memory.c:3858
 do_read_fault mm/memory.c:4173 [inline]
 do_fault mm/memory.c:4302 [inline]
 handle_pte_fault mm/memory.c:4560 [inline]
 __handle_mm_fault+0x28ea/0x5150 mm/memory.c:4695
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4793
 faultin_page mm/gup.c:949 [inline]
 __get_user_pages+0x503/0xf70 mm/gup.c:1170
 populate_vma_page_range+0x24d/0x330 mm/gup.c:1502
 __mm_populate+0x1ea/0x3e0 mm/gup.c:1611
 mm_populate include/linux/mm.h:2719 [inline]
 vm_mmap_pgoff+0x20e/0x290 mm/util.c:549
 ksys_mmap_pgoff+0x4a8/0x620 mm/mmap.c:1636
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f13ce41f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00000000004bfcc4 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd3eb47d5f R14: 00007f13ce41f300 R15: 0000000000022000
INFO: task syz-executor.0:23512 can't die for more than 143 seconds.
task:syz-executor.0  state:R  running task     stack:24624 pid:23512 ppid: 22131 flags:0x0000400e
Call Trace:
 context_switch kernel/sched/core.c:4698 [inline]
 __schedule+0x93a/0x26f0 kernel/sched/core.c:5955
INFO: lockdep is turned off.

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/08/11 02:22 linux-next 92d00774360d 6972b106 .config log report info INFO: task can't die in __blk_mq_delay_run_hw_queue
* Struck through repros no longer work on HEAD.