Hello, syzbot found the following issue on: HEAD commit: a4cda136f021 Add linux-next specific files for 20250404 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=148ca7cf980000 kernel config: https://syzkaller.appspot.com/x/.config?x=8a257c454bb1afb7 dashboard link: https://syzkaller.appspot.com/bug?extid=c35d73ce910d86c0026e 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=12fb2a74580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13ef023f980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/59048bc9c206/disk-a4cda136.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ad2ba7306f20/vmlinux-a4cda136.xz kernel image: https://storage.googleapis.com/syzbot-assets/b3bef7acbf10/bzImage-a4cda136.xz The issue was bisected to: commit 00b35530811f2aa3d7ceec2dbada80861c7632a8 Author: Eric Dumazet <edumazet@xxxxxxxxxx> Date: Thu Feb 6 14:04:22 2025 +0000 batman-adv: adopt netdev_hold() / netdev_put() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1703e23f980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1483e23f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=1083e23f980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c35d73ce910d86c0026e@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 00b35530811f ("batman-adv: adopt netdev_hold() / netdev_put()") ------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff819c19fc>] prepare_to_wait_event+0x3ac/0x460 kernel/sched/wait.c:298 WARNING: CPU: 1 PID: 5840 at kernel/sched/core.c:8745 __might_sleep+0xb9/0xe0 kernel/sched/core.c:8741 Modules linked in: CPU: 1 UID: 0 PID: 5840 Comm: syz-executor181 Not tainted 6.14.0-next-20250404-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__might_sleep+0xb9/0xe0 kernel/sched/core.c:8741 Code: b7 0e 01 90 42 80 3c 23 00 74 08 48 89 ef e8 3e 13 9b 00 48 8b 4d 00 48 c7 c7 e0 33 4a 8c 44 89 ee 48 89 ca e8 18 11 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:ffffc9000415f988 EFLAGS: 00010246 RAX: fd368e7e13f3a900 RBX: 1ffff110058ec6b1 RCX: ffff88802c761e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88802c763588 R08: ffffffff81828012 R09: fffffbfff1d7a980 R10: dffffc0000000000 R11: fffffbfff1d7a980 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000242 R15: ffffffff8c4ad740 FS: 00005555827b3380(0000) GS:ffff88812508f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559c14e13950 CR3: 000000007bd64000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __mutex_lock_common kernel/locking/mutex.c:578 [inline] __mutex_lock+0x12c/0x10c0 kernel/locking/mutex.c:746 have_mon_and_osd_map net/ceph/ceph_common.c:796 [inline] __ceph_open_session+0x471/0xa30 net/ceph/ceph_common.c:826 ceph_real_mount fs/ceph/super.c:1167 [inline] ceph_get_tree+0xac4/0x17b0 fs/ceph/super.c:1355 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 vfs_cmd_create+0xa0/0x1f0 fs/fsopen.c:225 vfs_fsconfig_locked fs/fsopen.c:-1 [inline] __do_sys_fsconfig fs/fsopen.c:467 [inline] __se_sys_fsconfig+0xa20/0xf40 fs/fsopen.c:344 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0b20653329 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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:00007fffabd71a98 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007fffabd71c68 RCX: 00007f0b20653329 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 00007f0b206c6610 R08: 0000000000000000 R09: 00007fffabd71c68 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffabd71c58 R14: 0000000000000001 R15: 0000000000000001 </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
