IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready overlayfs: failed to resolve '.S9[P۾׋9~H5^*ͻuzADg._zpzC6ȷb׻1׊<5On"(]SXw#%tNVp}XVsPXP': -2 INFO: task syz-executor.3:22336 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28648 22336 8120 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f88ba86de3a Code: Bad RIP value. RSP: 002b:00007ffef621d6a0 EFLAGS: 00010246 RAX: 0000000020000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: c87c4fd784b059a4 RSI: 0000000000000001 RDI: 00005555567582e8 RBP: 00007ffef621d798 R08: 0000000000000000 R09: 0000000000000000 R10: 00007f88ba455fc0 R11: 0000000000000001 R12: 00000000001235a0 R13: 00007ffef621d7c0 R14: 00007ffef621d7e0 R15: 0000000000000032 INFO: task syz-executor.3:22344 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D25232 22344 8120 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:602 [inline] RIP: 0010:iov_iter_fault_in_readable+0x18b/0x3f0 lib/iov_iter.c:421 Code: 39 f3 76 18 eb 3c e8 a4 88 ee fd 48 81 c3 00 10 00 00 48 39 1c 24 0f 82 94 01 00 00 e8 8e 88 ee fd 0f 01 cb 0f ae e8 45 31 f6 <8a> 13 0f 01 ca 31 ff 44 89 f6 88 54 24 38 e8 e2 89 ee fd 45 85 f6 RSP: 0018:ffff8880a84878e8 EFLAGS: 00050246 RAX: 0000000000040000 RBX: 00000000200ef000 RCX: ffffc90006a39000 RDX: 0000000000040000 RSI: ffffffff8373fce2 RDI: 0000000000000005 RBP: 1ffff11015090f1e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000001000 R14: 0000000000000000 R15: ffff8880a8487d20 iomap_write_actor+0xff/0x380 fs/iomap.c:837 iomap_apply+0x18b/0x290 fs/iomap.c:87 iomap_file_buffered_write+0x14e/0x1e0 fs/iomap.c:894 gfs2_file_write_iter+0x3cb/0xb30 fs/gfs2/file.c:847 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f88ba8ce0a9 Code: Bad RIP value. RSP: 002b:00007f88b8e40168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f88ba9edf80 RCX: 00007f88ba8ce0a9 RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007f88ba929ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef621d65f R14: 00007f88b8e40300 R15: 0000000000022000 INFO: task syz-executor.3:22430 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29168 22430 8120 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 bit_wait+0x12/0x90 kernel/sched/wait_bit.c:197 __wait_on_bit+0x7e/0x150 kernel/sched/wait_bit.c:48 out_of_line_wait_on_bit+0xd2/0x100 kernel/sched/wait_bit.c:63 wait_on_bit include/linux/wait_bit.h:76 [inline] gfs2_glock_wait+0xb7/0x1d0 fs/gfs2/glock.c:949 gfs2_glock_nq+0xae2/0x1360 fs/gfs2/glock.c:1118 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline] gfs2_mmap+0x235/0x320 fs/gfs2/file.c:528 call_mmap include/linux/fs.h:1826 [inline] mmap_region+0xc94/0x16b0 mm/mmap.c:1757 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 ksys_mmap_pgoff+0x298/0x5a0 mm/mmap.c:1580 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f88ba8ce0a9 Code: Bad RIP value. RSP: 002b:00007f88b1a1f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f88ba9ee050 RCX: 00007f88ba8ce0a9 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f88ba929ae9 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef621d65f R14: 00007f88b1a1f300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 000000007df012e7 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7785: #0: 00000000a58ddd2d (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7823: #0: 00000000ef1983b2 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000f1613038 (&tty->atomic_write_lock){+.+.}, at: tty_write_lock drivers/tty/tty_io.c:886 [inline] #1: 00000000f1613038 (&tty->atomic_write_lock){+.+.}, at: do_tty_write drivers/tty/tty_io.c:909 [inline] #1: 00000000f1613038 (&tty->atomic_write_lock){+.+.}, at: tty_write+0x24e/0x810 drivers/tty/tty_io.c:1044 3 locks held by kworker/u4:5/8859: 4 locks held by kworker/u4:6/9365: #0: 00000000ff584455 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000011cad911 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: trylock_super+0x1d/0x100 fs/super.c:412 #3: 0000000064daeb50 (&sdp->sd_log_flush_lock){++++}, at: gfs2_log_flush+0xd5/0x1ef0 fs/gfs2/log.c:793 1 lock held by syz-executor.3/22336: #0: 00000000e92242f6 (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 6 locks held by syz-executor.3/22344: #0: 000000005c56e574 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 #1: 000000002253a80b (sb_writers#37){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] #1: 000000002253a80b (sb_writers#37){.+.+}, at: vfs_write+0x463/0x540 fs/read_write.c:548 #2: 000000000585cf2c (&sb->s_type->i_mutex_key#39){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 000000000585cf2c (&sb->s_type->i_mutex_key#39){+.+.}, at: gfs2_file_write_iter+0x239/0xb30 fs/gfs2/file.c:800 #3: 0000000028d81781 (sb_internal#7){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #3: 0000000028d81781 (sb_internal#7){.+.+}, at: gfs2_trans_begin+0x32b/0x590 fs/gfs2/trans.c:62 #4: 0000000064daeb50 (&sdp->sd_log_flush_lock){++++}, at: gfs2_log_reserve+0x35f/0x8b0 fs/gfs2/log.c:400 #5: 00000000e92242f6 (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 1 lock held by syz-executor.3/22430: #0: 00000000e92242f6 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x152/0x200 mm/util.c:355 1 lock held by gfs2_logd/22424: #0: 0000000064daeb50 (&sdp->sd_log_flush_lock){++++}, at: gfs2_log_flush+0xd5/0x1ef0 fs/gfs2/log.c:793 3 locks held by gfs2_quotad/22425: #0: 000000002253a80b (sb_writers#37){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000002253a80b (sb_writers#37){.+.+}, at: gfs2_statfs_sync+0x107/0x670 fs/gfs2/super.c:593 #1: 0000000028d81781 (sb_internal#7){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 0000000028d81781 (sb_internal#7){.+.+}, at: gfs2_trans_begin+0x32b/0x590 fs/gfs2/trans.c:62 #2: 0000000064daeb50 (&sdp->sd_log_flush_lock){++++}, at: gfs2_log_reserve+0x35f/0x8b0 fs/gfs2/log.c:400 2 locks held by syz-executor.0/26674: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.0/26679: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.0/26703: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.0/26707: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.0/26715: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.0/26723: #0: 00000000797459c1 (&type->s_umount_key#104){.+.+}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 000000006ce8a312 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8859 Comm: kworker/u4:5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: bat_events batadv_nc_worker RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:312 [inline] RIP: 0010:__lock_acquire+0x834/0x3ff0 kernel/locking/lockdep.c:3411 Code: 48 89 f9 48 c1 e9 03 0f b6 14 11 48 89 f9 83 e1 07 38 ca 7f 08 84 d2 0f 85 74 26 00 00 41 32 6a 21 83 e5 60 0f 85 fd 05 00 00 <48> 89 da 89 d9 48 c1 ea 20 89 d0 41 29 d0 01 da c1 c0 04 44 31 c0 RSP: 0018:ffff8880918afa68 EFLAGS: 00000046 RAX: 000000000000002e RBX: 12e9d792f53784f9 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff8880918a4d48 RDI: ffff8880918a4db9 RBP: 0000000000000000 R08: 000000000000002e R09: 0000000000000002 R10: ffff8880918a4d98 R11: 0000000000000000 R12: 000000000002002e R13: ffff8880918a44c0 R14: ffff8880918a4db0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd35b591028 CR3: 00000000a10ed000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline] batadv_nc_worker+0x12d/0xd50 net/batman-adv/network-coding.c:730 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415