syzbot

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do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff81979dc6>] prepare_to_wait+0x186/0x210 kernel/sched/wait.c:237
WARNING: CPU: 1 PID: 10445 at kernel/sched/core.c:8687 __might_sleep+0xb9/0xe0 kernel/sched/core.c:8683
Modules linked in:
CPU: 1 UID: 0 PID: 10445 Comm: syz.9.678 Not tainted 6.13.0-rc3-next-20241220-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:8683
Code: 75 0e 01 90 42 80 3c 23 00 74 08 48 89 ef e8 ce 82 96 00 48 8b 4d 00 48 c7 c7 80 30 0a 8c 44 89 ee 48 89 ca e8 28 cb 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:ffffc9000b9fe5c8 EFLAGS: 00010246
RAX: 7344728466395500 RBX: 1ffff11004c84a6e RCX: 0000000000080000
RDX: ffffc9001038e000 RSI: 0000000000006f5f RDI: 0000000000006f60
RBP: ffff888026425370 R08: ffffffff817feaa2 R09: fffffbfff1cfa1a8
R10: dffffc0000000000 R11: fffffbfff1cfa1a8 R12: dffffc0000000000
R13: 0000000000000002 R14: 000000000000004a R15: ffffffff8c1ccf40
FS:  00007f723e2a66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002012d000 CR3: 000000006820c000 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+0x2e01/0x3ab0 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+0x52e/0xa00 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:600
 security_file_post_open+0xb9/0x280 security/security.c:3130
 do_open fs/namei.c:3830 [inline]
 path_openat+0x2cbd/0x3580 fs/namei.c:3987
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_open fs/open.c:1450 [inline]
 __se_sys_open fs/open.c:1446 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1446
 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: 0033:0x7f723d385d29
Code: ff ff 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f723e2a6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f723d575fa0 RCX: 00007f723d385d29
RDX: 0000000000000069 RSI: 0000000000003f00 RDI: 0000000020000340
RBP: 00007f723d401b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f723d575fa0 R15: 00007ffedb4401f8
 </TASK>