syzbot


WARNING in netfs_retry_reads (2)

Status: upstream: reported C repro on 2024/12/02 17:23
Subsystems: netfs
[Documentation on labels]
Reported-by: syzbot+5621e2baf492be382fa9@syzkaller.appspotmail.com
First crash: 28d, last: 6h45m
Cause bisection: introduced by (bisect log) :
commit 1bd9011ee163e11f186b72705978fd6b21bdc07b
Author: David Howells <dhowells@redhat.com>
Date: Fri Nov 8 17:32:29 2024 +0000

  netfs: Change the read result collector to only use one work item

Crash: WARNING in netfs_retry_reads (log)
Repro: C syz .config
  
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly netfs report (Dec 2024) 0 (1) 2024/12/27 23:25
[syzbot] [netfs?] WARNING in netfs_retry_reads (2) 1 (3) 2024/12/04 01:51
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in netfs_retry_reads netfs C done 16 31d 31d 0/28 closed as invalid on 2024/11/29 18:51
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/12/03 16:50 1h20m dhowells@redhat.com git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git netfs-writeback OK log

Sample crash report:
------------[ 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>

Crashes (57):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/02 01:03 linux-next f486c8aa16b8 68914665 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/02 00:33 linux-next f486c8aa16b8 68914665 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/01 23:53 linux-next f486c8aa16b8 68914665 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/30 09:36 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/29 23:54 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/29 03:39 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/28 14:16 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/26 18:22 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/26 04:43 linux-next 8155b4ef3466 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/24 20:33 linux-next 8155b4ef3466 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/22 15:50 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/22 13:38 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 22:15 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 22:05 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 22:05 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 22:04 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 21:39 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/21 21:39 linux-next 8155b4ef3466 d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/20 11:44 linux-next 8155b4ef3466 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/20 11:44 linux-next 8155b4ef3466 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/20 04:38 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/20 04:38 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/19 22:56 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/19 22:56 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/19 22:56 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/19 22:56 linux-next 8503810115fb 1d58202c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 20:42 linux-next 7fa366f1b6e3 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 20:42 linux-next 7fa366f1b6e3 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 12:39 linux-next 7fa366f1b6e3 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 12:39 linux-next 7fa366f1b6e3 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 12:18 linux-next 7fa366f1b6e3 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/18 12:18 linux-next 7fa366f1b6e3 a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/11 07:38 linux-next af2ea8ab7a54 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/11 07:38 linux-next af2ea8ab7a54 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/10 07:46 linux-next af2ea8ab7a54 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/10 07:46 linux-next af2ea8ab7a54 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/09 13:40 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/09 13:39 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/09 00:11 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/09 00:10 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/07 23:35 linux-next af2ea8ab7a54 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/06 12:00 linux-next af2ea8ab7a54 946d28f0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/06 12:00 linux-next af2ea8ab7a54 946d28f0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/06 12:00 linux-next af2ea8ab7a54 946d28f0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/04 21:11 linux-next bcf2acd8f64b b50eb251 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/03 19:50 linux-next f486c8aa16b8 578925bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/02 23:39 linux-next f486c8aa16b8 bb326ffb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/02 23:39 linux-next f486c8aa16b8 bb326ffb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/01 23:13 linux-next f486c8aa16b8 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
2024/12/01 23:12 linux-next f486c8aa16b8 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in netfs_retry_reads
* Struck through repros no longer work on HEAD.