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X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: 739a6c93cc75 Merge tag 'nfsd-6.16-1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14ab0b0c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d6f01a06a8393850 dashboard link: https://syzkaller.appspot.com/bug?extid=e9c76b56dc05023b8117 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=115d9b0c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155d9b0c580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2af98a1750d0/disk-739a6c93.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/da52c6f34aea/vmlinux-739a6c93.xz kernel image: https://storage.googleapis.com/syzbot-assets/33104a41d02f/bzImage-739a6c93.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e9c76b56dc05023b8117@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f551d418959 RDX: 0000000000000000 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 00007ffd42a61210 R08: 00007ffd42a60f67 R09: 00007f551d495520 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f551d46bff1 R13: 00007f551d4685c6 R14: 00007f551d46f13c R15: 00007f551d46852e ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5828 at drivers/mtd/mtdpart.c:37 release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:37 Modules linked in: CPU: 0 UID: 0 PID: 5828 Comm: syz-executor312 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:37 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 1e 48 8b 7b 38 e8 0f a4 ac fb 48 89 df 5b 5d e9 05 a4 ac fb e8 f0 ca 51 fb 90 <0f> 0b 90 eb c2 e8 55 aa b7 fb eb db 48 89 ef e8 4b aa b7 fb eb a5 RSP: 0018:ffffc9000403f840 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802aaaf000 RCX: ffffffff8b776890 RDX: ffff888028990000 RSI: ffffffff8669bdc0 RDI: ffff88802aaaf000 RBP: ffff88802aaaf648 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888022aa6be0 R15: 0000000000000000 FS: 0000555557c483c0(0000) GS:ffff888124761000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f5b58bb000 CR3: 0000000073c58000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mtd_release+0xa0/0xd0 drivers/mtd/mtdcore.c:101 device_release+0xa1/0x240 drivers/base/core.c:2568 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1e7/0x5a0 lib/kobject.c:737 put_device+0x1f/0x30 drivers/base/core.c:3800 add_mtd_device+0xbc7/0x1720 drivers/mtd/mtdcore.c:752 mtd_add_partition+0x30c/0x670 drivers/mtd/mtdpart.c:279 mtdchar_blkpg_ioctl+0x20b/0x250 drivers/mtd/mtdchar.c:562 mtdchar_ioctl+0xbc4/0x2090 drivers/mtd/mtdchar.c:1216 mtdchar_unlocked_ioctl+0xb0/0xf0 drivers/mtd/mtdchar.c:1239 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f551d418959 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd42a611c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f551d418959 RDX: 0000000000000000 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 00007ffd42a61210 R08: 00007ffd42a60f67 R09: 00007f551d495520 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f551d46bff1 R13: 00007f551d4685c6 R14: 00007f551d46f13c R15: 00007f551d46852e --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. 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. 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Tue, 24 Jun 2025 11:50:29 -0700 (PDT) Date: Tue, 24 Jun 2025 11:50:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <685af375.a00a0220.34b642.0082.GAE@google.com> Subject: [syzbot] [mtd?] WARNING in release_mtd_partition (2) From: syzbot To: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, syzkaller-bugs@googlegroups.com, vigneshr@ti.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 739a6c93cc75 Merge tag 'nfsd-6.16-1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14ab0b0c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d6f01a06a8393850 dashboard link: https://syzkaller.appspot.com/bug?extid=e9c76b56dc05023b8117 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=115d9b0c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155d9b0c580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2af98a1750d0/disk-739a6c93.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/da52c6f34aea/vmlinux-739a6c93.xz kernel image: https://storage.googleapis.com/syzbot-assets/33104a41d02f/bzImage-739a6c93.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e9c76b56dc05023b8117@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f551d418959 RDX: 0000000000000000 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 00007ffd42a61210 R08: 00007ffd42a60f67 R09: 00007f551d495520 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f551d46bff1 R13: 00007f551d4685c6 R14: 00007f551d46f13c R15: 00007f551d46852e ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5828 at drivers/mtd/mtdpart.c:37 release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:37 Modules linked in: CPU: 0 UID: 0 PID: 5828 Comm: syz-executor312 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:37 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 1e 48 8b 7b 38 e8 0f a4 ac fb 48 89 df 5b 5d e9 05 a4 ac fb e8 f0 ca 51 fb 90 <0f> 0b 90 eb c2 e8 55 aa b7 fb eb db 48 89 ef e8 4b aa b7 fb eb a5 RSP: 0018:ffffc9000403f840 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802aaaf000 RCX: ffffffff8b776890 RDX: ffff888028990000 RSI: ffffffff8669bdc0 RDI: ffff88802aaaf000 RBP: ffff88802aaaf648 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888022aa6be0 R15: 0000000000000000 FS: 0000555557c483c0(0000) GS:ffff888124761000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f5b58bb000 CR3: 0000000073c58000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mtd_release+0xa0/0xd0 drivers/mtd/mtdcore.c:101 device_release+0xa1/0x240 drivers/base/core.c:2568 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1e7/0x5a0 lib/kobject.c:737 put_device+0x1f/0x30 drivers/base/core.c:3800 add_mtd_device+0xbc7/0x1720 drivers/mtd/mtdcore.c:752 mtd_add_partition+0x30c/0x670 drivers/mtd/mtdpart.c:279 mtdchar_blkpg_ioctl+0x20b/0x250 drivers/mtd/mtdchar.c:562 mtdchar_ioctl+0xbc4/0x2090 drivers/mtd/mtdchar.c:1216 mtdchar_unlocked_ioctl+0xb0/0xf0 drivers/mtd/mtdchar.c:1239 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f551d418959 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd42a611c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f551d418959 RDX: 0000000000000000 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 00007ffd42a61210 R08: 00007ffd42a60f67 R09: 00007f551d495520 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f551d46bff1 R13: 00007f551d4685c6 R14: 00007f551d46f13c R15: 00007f551d46852e --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. 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