linux-next build error (26)

Status: upstream: reported on 2026/06/16 20:06
Reported-by: syzbot+1f14a35d0c73d31555e4@syzkaller.appspotmail.com
Fix commit: apparmor: replace decompress_zstd() prototype with its entity
Patched on: [], missing on: [ci-qemu-gce-upstream-auto ci-qemu-native-arm64-kvm ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-snapshot-upstream-root ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci-upstream-rust-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 49d, last: 3h50m
▶ ▼ ✨ AI Jobs (6)
ID Workflow Result Correct Bug Created Started Finished Revision Error
ba4f978b assessment-security 💥 linux-next build error (26) 2026/07/17 00:19 2026/07/17 00:19 2026/07/17 00:40 49f47391 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/fe275ac5e0413a1625...
truncated to first 200 bytes; open job for full error
ec70d794 assessment-security 💥 linux-next build error (26) 2026/07/01 00:09 2026/07/01 00:09 2026/07/01 00:23 93f57954 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/cfe791d86558e0081c...
truncated to first 200 bytes; open job for full error
0a601aad assessment-security 💥 linux-next build error (26) 2026/06/23 00:02 2026/06/23 00:02 2026/06/23 00:06 5a630be6 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/a24fedfde00e5f1b13...
truncated to first 200 bytes; open job for full error
c305f549 assessment-security 💥 linux-next build error (26) 2026/06/18 06:28 2026/06/18 06:28 2026/06/18 06:30 b62b3ded 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/f093bad0fa19c260da...
truncated to first 200 bytes; open job for full error
8bc516c0 assessment-security 💥 linux-next build error (26) 2026/06/16 00:01 2026/06/16 00:01 2026/06/16 00:04 50bb0618 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5a8fadfba8296872e1...
truncated to first 200 bytes; open job for full error
90637f8f assessment-security 💥 linux-next build error (26) 2026/06/14 00:02 2026/06/14 00:02 2026/06/14 00:05 4f06757f 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/ac5c078425b016adb3...
truncated to first 200 bytes; open job for full error
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
Re: [PATCH v3] block: assign caller-specific lockdep class to disk->open_mutex 3 (3) 2026/06/19 13:16
[syzbot] linux-next build error (26) 0 (1) 2026/06/16 20:06
▶ ▼ Similar bugs (25)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream linux-next build error (22) -1 27 281d 381d 0/29 closed as invalid on 2025/10/23 12:06
upstream linux-next build error (17) -1 2 749d 750d 0/29 auto-obsoleted due to no activity on 2024/09/10 01:54
upstream linux-next build error (7) kernel -1 7 2378d 2382d 15/29 fixed on 2020/03/11 20:34
upstream linux-next build error (20) -1 53 484d 523d 0/29 closed as invalid on 2025/04/14 14:48
upstream linux-next build error (11) -1 2 2060d 2060d 0/29 auto-closed as invalid on 2021/02/07 17:19
upstream linux-next build error (2) -1 1 3147d 3147d 0/29 closed as invalid on 2017/12/18 14:32
upstream linux-next build error (24) -1 3 227d 269d 0/29 closed as invalid on 2025/12/17 13:51
upstream linux-next build error -1 1 3147d 3147d 0/29 closed as invalid on 2017/12/18 08:32
upstream linux-next build error (15) cifs -1 2 1127d 1128d 0/29 auto-obsoleted due to no activity on 2023/08/28 20:53
upstream linux-next build error (18) -1 28 590d 623d 0/29 auto-obsoleted due to no activity on 2025/01/27 03:08
upstream linux-next build error (12) -1 63 1851d 1950d 20/29 fixed on 2021/11/10 00:50
upstream linux-next build error (13) nvme -1 5 1533d 1536d 0/29 auto-closed as invalid on 2022/07/18 23:22
upstream linux-next build error (4) -1 1 2524d 2524d 0/29 closed as invalid on 2019/09/02 13:57
upstream linux-next build error (14) -1 5 1278d 1331d 0/29 auto-obsoleted due to no activity on 2023/03/31 06:03
upstream linux-next build error (25) -1 3 126d 127d 0/29 closed as invalid on 2026/04/21 13:56
upstream linux-next build error (21) -1 3 463d 464d 0/29 auto-obsoleted due to no activity on 2025/06/23 00:33
upstream linux-next build error (19) -1 7 543d 547d 0/29 closed as invalid on 2025/02/03 14:29
upstream linux-next build error (23) -1 1 270d 270d 0/29 closed as invalid on 2025/11/03 14:34
upstream linux-next build error (8) -1 4 2261d 2326d 2/29 closed as invalid on 2020/05/27 06:38
upstream linux-next build error (3) -1 4 2929d 2930d 0/29 closed as invalid on 2018/07/24 13:58
upstream linux-next build error (10) ath11k -1 18 2132d 2205d 0/29 auto-closed as invalid on 2020/11/27 07:58
upstream linux-next build error (16) crypto -1 12 993d 994d 0/29 auto-obsoleted due to no activity on 2023/12/21 01:05
upstream linux-next build error (6) -1 1 2437d 2437d 0/29 closed as invalid on 2019/11/28 08:37
upstream linux-next build error (9) kernel -1 1 2230d 2230d 0/29 closed as invalid on 2020/06/22 13:12
upstream linux-next build error (5) kernel -1 13 2513d 2522d 0/29 closed as invalid on 2019/09/19 05:32

Sample crash report:
error[E0308]: mismatched types

Crashes (34):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/31 16:45 linux-next 415606a7be93 7664cf44 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/31 13:45 linux-next 95d6a9ccef99 7664cf44 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/30 18:55 linux-next 95d6a9ccef99 aaffb173 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/30 15:19 linux-next 95d6a9ccef99 2377cd3d .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/02 14:05 linux-next 4f441960e691 2b70b115 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/02 13:54 linux-next 4f441960e691 2b70b115 .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/07/01 16:10 linux-next 4f441960e691 27192279 .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/07/01 16:00 linux-next 4f441960e691 27192279 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/01 15:32 linux-next be5c93fa674f 27192279 .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/07/01 15:22 linux-next be5c93fa674f 27192279 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/07/01 02:08 linux-next be5c93fa674f 00a5cf1c .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/07/01 01:58 linux-next be5c93fa674f 00a5cf1c .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/30 18:13 linux-next be5c93fa674f 00e8b0fd .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/30 18:03 linux-next be5c93fa674f 00e8b0fd .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/06/23 13:11 linux-next 4e5dfb7c8401 4b1d8f01 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/23 08:55 linux-next 948efecf22e4 4b1d8f01 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/22 15:49 linux-next 948efecf22e4 5a630be6 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/22 11:52 linux-next 948efecf22e4 43bfcdb0 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/19 16:52 linux-next 3ce97bd3c4f1 43bfcdb0 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/19 13:02 linux-next 3ce97bd3c4f1 d7ffd47b .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/19 02:41 linux-next 598c7067dd8b d7ffd47b .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/18 14:14 linux-next 598c7067dd8b a776b0d0 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/18 12:38 linux-next e2cae00c05d1 a776b0d0 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/18 11:47 linux-next 4fa3f5fabb30 a776b0d0 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/17 22:52 linux-next 4fa3f5fabb30 b62b3ded .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/17 05:37 linux-next 4fa3f5fabb30 62cc6db3 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/16 16:25 linux-next 4fa3f5fabb30 0e4b3e40 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/16 15:43 linux-next 4fa3f5fabb30 50bb0618 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/15 17:52 linux-next 8d6dbbbe3ba6 50bb0618 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/15 17:34 linux-next 700f8f17ac2c 50bb0618 .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/06/15 15:58 linux-next 700f8f17ac2c 50bb0618 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/15 15:44 linux-next 700f8f17ac2c 1d2f3589 .config console log report ci-upstream-linux-next-kasan-gce-root linux-next build error
2026/06/15 15:36 linux-next 700f8f17ac2c 1d2f3589 .config console log report ci-upstream-rust-kasan-gce linux-next build error
2026/06/12 20:00 linux-next c425609d6ac4 1d2f3589 .config console log report ci-upstream-rust-kasan-gce linux-next build error
* Struck through repros no longer work on HEAD.