Hello, syzbot found the following issue on: HEAD commit: f486c8aa16b8 Add linux-next specific files for 20241128 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=1236a0df980000 kernel config: https://syzkaller.appspot.com/x/.config?x=e348a4873516af92 dashboard link: https://syzkaller.appspot.com/bug?extid=5621e2baf492be382fa9 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17da7f78580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=138f3d30580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/beb58ebb63cf/disk-f486c8aa.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b241b5609e64/vmlinux-f486c8aa.xz kernel image: https://storage.googleapis.com/syzbot-assets/c9d817f665f2/bzImage-f486c8aa.xz The issue was bisected to: commit 1bd9011ee163e11f186b72705978fd6b21bdc07b Author: David Howells <dhowells@xxxxxxxxxx> Date: Fri Nov 8 17:32:29 2024 +0000 netfs: Change the read result collector to only use one work item bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=144ccfc0580000 final oops: https://syzkaller.appspot.com/x/report.txt?x=164ccfc0580000 console output: https://syzkaller.appspot.com/x/log.txt?x=124ccfc0580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5621e2baf492be382fa9@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 1bd9011ee163 ("netfs: Change the read result collector to only use one work item") ------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff8177c166>] prepare_to_wait+0x186/0x210 kernel/sched/wait.c:237 WARNING: CPU: 0 PID: 5828 at kernel/sched/core.c:8685 __might_sleep+0xb9/0xe0 kernel/sched/core.c:8681 Modules linked in: CPU: 0 UID: 0 PID: 5828 Comm: syz-executor222 Not tainted 6.12.0-next-20241128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__might_sleep+0xb9/0xe0 kernel/sched/core.c:8681 Code: 94 0e 01 90 42 80 3c 23 00 74 08 48 89 ef e8 ae 30 9b 00 48 8b 4d 00 48 c7 c7 e0 2d 0a 8c 44 89 ee 48 89 ca e8 08 e6 f0 ff 90 <0f> 0b 90 90 eb b5 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 70 ff ff ff RSP: 0018:ffffc900039765a8 EFLAGS: 00010246 RAX: b7d7501871149800 RBX: 1ffff1100ff252ed RCX: ffff88807f928000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88807f929768 R08: ffffffff81601ea2 R09: fffffbfff1cfa220 R10: dffffc0000000000 R11: fffffbfff1cfa220 R12: dffffc0000000000 R13: 0000000000000002 R14: 000000000000004a R15: ffffffff8c1ca1a0 FS: 0000555593050480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bb6dfcc068 CR3: 000000002f04e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> wait_on_bit include/linux/wait_bit.h:74 [inline] netfs_retry_reads+0xde/0x1e10 fs/netfs/read_retry.c:263 netfs_collect_read_results fs/netfs/read_collect.c:333 [inline] netfs_read_collection+0x334e/0x4020 fs/netfs/read_collect.c:414 netfs_wait_for_read+0x2ba/0x4e0 fs/netfs/read_collect.c:629 netfs_unbuffered_read fs/netfs/direct_read.c:156 [inline] netfs_unbuffered_read_iter_locked+0x11fc/0x1540 fs/netfs/direct_read.c:231 netfs_unbuffered_read_iter+0xbf/0xe0 fs/netfs/direct_read.c:266 __kernel_read+0x513/0x9d0 fs/read_write.c:523 integrity_kernel_read+0xb0/0x100 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0xae6/0x1b30 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x520/0xb10 security/integrity/ima/ima_api.c:293 process_measurement+0x1351/0x1fb0 security/integrity/ima/ima_main.c:372 ima_file_check+0xd9/0x120 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3121 do_open fs/namei.c:3830 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_open fs/open.c:1425 [inline] __se_sys_open fs/open.c:1421 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1421 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdf86d213b9 Code: d8 5b c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdb23978f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffdb2397940 RCX: 00007fdf86d213b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340 RBP: 00007ffdb2397948 R08: aaaaaaaaaaaa0102 R09: aaaaaaaaaaaa0102 R10: aaaaaaaaaaaa0102 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 000000000000001d R15: 00007fdf86d983a0 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
