syzbot


INFO: task hung in __writeback_inodes_sb_nr

Status: upstream: reported C repro on 2023/03/09 17:32
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+59b165f27afa8541bb41@syzkaller.appspotmail.com
First crash: 603d, last: 3d10h
Fix commit to backport (bisect log) :
tree: upstream
commit 8d5459c11f548131ce48b2fbf45cccc5c382558f
Author: Jan Kara <jack@suse.cz>
Date: Fri May 20 11:14:02 2022 +0000

  ext4: improve write performance with disabled delalloc

  
Bug presence (2)
Date Name Commit Repro Result
2024/10/15 linux-5.15.y (ToT) 3a5928702e71 C [report] INFO: task hung in __writeback_inodes_sb_nr
2024/10/15 upstream (ToT) eca631b8fe80 C Didn't crash
Similar bugs (13)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in __writeback_inodes_sb_nr fs 53 2118d 2381d 0/28 closed as dup on 2018/09/08 15:33
android-49 INFO: task hung in __writeback_inodes_sb_nr 26 2214d 2357d 0/3 auto-closed as invalid on 2019/04/08 13:33
android-414 INFO: task hung in __writeback_inodes_sb_nr 1 2152d 2029d 0/1 auto-closed as invalid on 2019/06/09 16:55
upstream INFO: task hung in __writeback_inodes_sb_nr (5) ext4 C done 48 623d 993d 22/28 fixed on 2023/02/24 13:50
linux-6.1 INFO: task hung in __writeback_inodes_sb_nr (2) origin:lts-only C error 8 10d 307d 0/3 upstream: reported C repro on 2023/12/30 04:30
linux-4.19 INFO: task hung in __writeback_inodes_sb_nr ext4 4 617d 765d 0/1 upstream: reported on 2022/09/28 21:19
linux-6.1 INFO: task hung in __writeback_inodes_sb_nr 1 441d 441d 0/3 auto-obsoleted due to no activity on 2023/11/26 06:37
upstream INFO: task hung in __writeback_inodes_sb_nr (6) bcachefs C done 1602 20m 504d 1/28 upstream: reported C repro on 2023/06/17 00:33
upstream INFO: task hung in __writeback_inodes_sb_nr (4) ext4 4 1001d 1056d 0/28 closed as invalid on 2022/02/08 10:10
upstream INFO: task hung in __writeback_inodes_sb_nr (3) ext4 2 1268d 1365d 0/28 auto-closed as invalid on 2021/08/11 17:49
linux-4.14 INFO: task hung in __writeback_inodes_sb_nr (2) 2 733d 734d 0/1 auto-obsoleted due to no activity on 2023/02/27 15:30
upstream INFO: task hung in __writeback_inodes_sb_nr (2) ext4 1 1549d 1549d 0/28 auto-closed as invalid on 2020/11/03 06:13
linux-4.14 INFO: task hung in __writeback_inodes_sb_nr 1 1616d 1616d 0/1 auto-closed as invalid on 2020/09/27 19:31
Last patch testing requests (8)
Created Duration User Patch Repo Result
2024/10/29 13:45 17m (2) retest repro linux-5.15.y report log
2024/10/29 13:45 15m retest repro linux-5.15.y report log
2024/10/29 13:45 32m retest repro linux-5.15.y OK log
2024/10/29 13:45 2h21m retest repro linux-5.15.y report log
2024/10/29 13:45 1h58m retest repro linux-5.15.y report log
2024/10/02 01:36 14m retest repro linux-5.15.y report log
2024/10/02 01:36 19m retest repro linux-5.15.y report log
2024/10/02 01:36 19m retest repro linux-5.15.y report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/08/06 07:21 8h45m fix candidate upstream OK (1) job log

Sample crash report:
INFO: task syz-executor.4:5285 blocked for more than 143 seconds.
      Not tainted 5.15.148-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:20600 pid: 5285 ppid:  3586 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
 __writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2684
 try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2732
 ext4_nonda_switch fs/ext4/inode.c:2933 [inline]
 ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2960
 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785
 ext4_buffered_write_iter+0x227/0x360 fs/ext4/file.c:268
 ext4_file_write_iter+0x87c/0x1990
 __kernel_write+0x5b1/0xa60 fs/read_write.c:539
 __dump_emit+0x264/0x3a0 fs/coredump.c:875
 dump_user_range+0x91/0x320 fs/coredump.c:949
 elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
 do_coredump+0x1852/0x31e0 fs/coredump.c:826
 get_signal+0xc06/0x14e0 kernel/signal.c:2875
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:314
 exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
 asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7f70ea280db1
RSP: 002b:0000000020000490 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f70ea3aef80 RCX: 00007f70ea280da9
RDX: 00000000200004c0 RSI: 0000000020000490 RDI: 0000000020004000
RBP: 00007f70ea2cd47a R08: 0000000020000540 R09: 0000000020000540
R10: 0000000020000500 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f70ea3aef80 R15: 00007ffee19ad058
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:0/7:
 #0: ffff888011c72538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90000cc7d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by khungtaskd/26:
 #0: ffffffff8c91f220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by dhcpcd/3177:
 #0: ffffffff8d9da688 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d9da688 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5627
2 locks held by getty/3260:
 #0: ffff8880254af098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc9000249b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:2/3603:
 #0: ffff888011dcd138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc900030c7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8d9cead0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:558
1 lock held by kworker/u4:4/3604:
 #0: ffff8880b9a39718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
3 locks held by kworker/1:5/3628:
 #0: ffff888011c70d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90003337d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8d9da688 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
3 locks held by kworker/u4:5/3663:
 #0: ffff8881435dd138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90003407d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
3 locks held by syz-executor.4/5285:
 #0: ffff8880254a2460 (sb_writers#5){.+.+}-{0:0}, at: do_coredump+0x1825/0x31e0 fs/coredump.c:825
 #1: ffff88806f6f03f0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff88806f6f03f0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: ext4_buffered_write_iter+0xa0/0x360 fs/ext4/file.c:262
 #2: ffff8880254a20e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x1d/0xb0 fs/fs-writeback.c:2729
1 lock held by syz-executor.3/5358:
1 lock held by syz-executor.0/5359:
1 lock held by syz-executor.2/5363:
1 lock held by syz-executor.3/5386:
1 lock held by syz-executor.4/5398:
1 lock held by syz-executor.0/5410:
2 locks held by syz-executor.0/5412:
1 lock held by syz-executor.2/5414:
1 lock held by syz-executor.2/5416:
1 lock held by syz-executor.0/5427:
1 lock held by syz-executor.4/5430:
1 lock held by syz-executor.0/5433:
1 lock held by syz-executor.3/5567:
1 lock held by syz-executor.2/5775:
1 lock held by syz-executor.0/5779:
1 lock held by syz-executor.2/5781:
1 lock held by syz-executor.0/5787:
1 lock held by syz-executor.2/5824:
2 locks held by syz-executor.0/5827:
1 lock held by syz-executor.4/6775:
1 lock held by syz-executor.2/6796:
1 lock held by syz-executor.4/6798:
1 lock held by syz-executor.4/6833:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.4/6865:
1 lock held by syz-executor.2/7041:
1 lock held by syz-executor.3/7043:
1 lock held by syz-executor.4/7050:
1 lock held by syz-executor.3/7053:
1 lock held by syz-executor.4/7054:
1 lock held by syz-executor.2/7056:
1 lock held by syz-executor.0/7068:
1 lock held by syz-executor.3/7071:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.2/7074:
1 lock held by syz-executor.2/7075:
1 lock held by syz-executor.0/7076:
1 lock held by syz-executor.4/7081:
1 lock held by syz-executor.3/7278:
1 lock held by syz-executor.3/7281:
1 lock held by syz-executor.4/7305:
1 lock held by syz-executor.4/7308:
1 lock held by syz-executor.3/7320:
1 lock held by syz-executor.1/7323:
1 lock held by syz-executor.0/7332:
1 lock held by syz-executor.0/7334:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.3/7335:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.4/7352:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.4/7356:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
2 locks held by syz-executor.1/7361:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
 #1: ffff8880254a63f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_log_do_checkpoint+0xb25/0x1220 fs/jbd2/checkpoint.c:237
2 locks held by syz-executor.4/7494:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
 #1: ffff8880254a63f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_log_do_checkpoint+0xb25/0x1220 fs/jbd2/checkpoint.c:237
1 lock held by syz-executor.3/7505:
2 locks held by syz-executor.3/7616:
1 lock held by syz-executor.1/7693:
2 locks held by syz-executor.1/7718:
1 lock held by syz-executor.1/7801:
1 lock held by syz-executor.1/7802:
2 locks held by syz-executor.2/7818:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
 #1: ffff8880254a63f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_log_do_checkpoint+0xb25/0x1220 fs/jbd2/checkpoint.c:237
1 lock held by syz-executor.2/7839:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.1/7866:
2 locks held by syz-executor.3/7899:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
 #1: ffff8880254a63f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_log_do_checkpoint+0xb25/0x1220 fs/jbd2/checkpoint.c:237
1 lock held by syz-executor.1/7934:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.2/7940:
1 lock held by syz-executor.4/7969:
1 lock held by syz-executor.1/8001:
1 lock held by syz-executor.1/8027:
1 lock held by syz-executor.3/8119:
1 lock held by syz-executor.1/8150:
1 lock held by syz-executor.1/8231:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.3/9002:
1 lock held by syz-executor.2/9294:
1 lock held by syz-executor.1/9355:
1 lock held by syz-executor.0/9590:
1 lock held by syz-executor.4/9602:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.4/9729:
1 lock held by syz-executor.1/9960:
1 lock held by syz-executor.4/10040:
1 lock held by syz-executor.4/10046:
1 lock held by syz-executor.3/10054:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.4/10065:
1 lock held by syz-executor.4/10068:
1 lock held by syz-executor.1/10073:
1 lock held by syz-executor.3/10792:
1 lock held by syz-executor.0/11330:
1 lock held by syz-executor.2/11344:
1 lock held by syz-executor.0/11379:
 #0: ffff8880254a4bd8 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x1f6/0x3d10 fs/ext4/inode.c:2677
1 lock held by syz-executor.0/11412:
1 lock held by syz-executor.2/11422:
1 lock held by syz-executor.3/11891:
2 locks held by syz-executor.3/11901:
1 lock held by syz-executor.3/12029:
1 lock held by syz-executor.3/12208:
1 lock held by syz-executor.0/12211:
1 lock held by syz-executor.0/12238:
1 lock held by syz-executor.3/12241:
3 locks held by syz-executor.0/12378:
3 locks held by syz-executor.0/12380:
1 lock held by syz-executor.3/12384:
2 locks held by syz-executor.3/12385:
2 locks held by syz-executor.2/12387:
4 locks held by syz-executor.2/12389:
3 locks held by syz-executor.4/12399:
3 locks held by syz-executor.4/12401:
2 locks held by dhcpcd/12403:
 #0: ffff88806f425010 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #0: ffff88806f425010 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline]
 #0: ffff88806f425010 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1336
 #1: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #1: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
2 locks held by syz-executor.1/12405:
 #0: ffffffff8d9da688 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d9da688 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5627
 #1: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #1: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
2 locks held by syz-executor.0/12409:
2 locks held by syz-executor.0/12410:
3 locks held by syz-executor.2/12417:
2 locks held by syz-executor.3/12425:
3 locks held by syz-executor.4/12426:
2 locks held by syz-executor.2/12427:
3 locks held by syz-executor.0/12431:
3 locks held by syz-executor.0/12432:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.15.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xe72/0xeb0 kernel/hung_task.c:295
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3604 Comm: kworker/u4:4 Not tainted 5.15.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: phy5 ieee80211_iface_work
RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65
Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01
RSP: 0018:ffffc900030d71e0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc900030d72f0 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900030d7300
RBP: ffffffff8e59eae6 R08: dffffc0000000000 R09: ffffc900030d72f0
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cb3d5c
R13: 1ffffffff1cb3d5c R14: ffffffff8e59eae2 R15: ffffc900030d72a0
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e9ffacf680 CR3: 0000000024b8d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 unwind_next_frame+0xbc8/0x1fa0 arch/x86/kernel/unwind_orc.c:547
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x168/0x300 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 ieee802_11_parse_elems_crc+0xb3/0x1130 net/mac80211/util.c:1478
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2238 [inline]
 ieee80211_bss_info_update+0x86d/0xc80 net/mac80211/scan.c:212
 ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x175e/0x2af0 net/mac80211/ibss.c:1643
 ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
 ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (1496):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/18 13:16 linux-5.15.y 6139f2a02fe0 578f7538 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2023/12/31 17:16 linux-5.15.y d93fa2c78854 fb427a07 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/12/10 05:36 linux-5.15.y 8a1d809b0545 28b24332 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/08/15 20:17 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2023/08/06 15:49 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/05/01 00:49 linux-5.15.y f48aeeaaa64c 62df2017 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/04/21 03:54 linux-5.15.y c52b9710c83d af24b050 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __writeback_inodes_sb_nr
2023/07/08 23:49 linux-5.15.y d54cfc420586 668cb1fa .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2023/07/01 06:53 linux-5.15.y 4af60700a60c af3053d2 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/25 14:32 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/25 04:00 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/25 02:11 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/25 00:34 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/24 16:37 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/24 03:40 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/24 02:31 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/24 00:01 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/23 18:00 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/23 15:53 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/23 13:47 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/23 07:38 linux-5.15.y b95c01af2113 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/23 02:16 linux-5.15.y b95c01af2113 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/22 23:08 linux-5.15.y b95c01af2113 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/22 10:53 linux-5.15.y b95c01af2113 7a239ce7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/21 12:57 linux-5.15.y b95c01af2113 6753db5c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/21 11:18 linux-5.15.y b95c01af2113 6753db5c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 23:04 linux-5.15.y b95c01af2113 5b7d42ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 20:00 linux-5.15.y b95c01af2113 5b7d42ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 18:58 linux-5.15.y b95c01af2113 5b7d42ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 14:28 linux-5.15.y b95c01af2113 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 11:07 linux-5.15.y b95c01af2113 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 08:02 linux-5.15.y b95c01af2113 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 06:59 linux-5.15.y b95c01af2113 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/20 04:01 linux-5.15.y b95c01af2113 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 22:15 linux-5.15.y b95c01af2113 e104824c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 19:10 linux-5.15.y b95c01af2113 e104824c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 10:57 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 09:47 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 08:38 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 04:52 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 03:02 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/19 01:32 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/18 22:07 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/18 20:18 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/18 19:16 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/18 15:26 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 21:10 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 18:51 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 17:44 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 17:32 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 15:31 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 13:09 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 11:44 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 05:10 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2024/03/17 02:51 linux-5.15.y b95c01af2113 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
2023/09/01 15:18 linux-5.15.y 9e43368a3393 696ea0d2 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/08/23 00:19 linux-5.15.y f6f7927ac664 b81ca3f6 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/08/15 07:49 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf INFO: task hung in __writeback_inodes_sb_nr
2023/03/09 17:32 linux-5.15.y d9b4a0c83a2d f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __writeback_inodes_sb_nr
* Struck through repros no longer work on HEAD.