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Message-ID: <0000000000007f649605ee57c509@google.com> Date: Fri, 25 Nov 2022 20:07:06 -0800 From: syzbot <syzbot+47366a6b503c7edf6bbb@...kaller.appspotmail.com> To: jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org, shaggy@...nel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] WARNING in diUnmount Hello, syzbot found the following issue on: HEAD commit: a77d28d13789 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=15e01df9880000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4c990190d758078 dashboard link: https://syzkaller.appspot.com/bug?extid=47366a6b503c7edf6bbb compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7c4b04ddbeb3/disk-a77d28d1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3ecedb0cf6ca/vmlinux-a77d28d1.xz kernel image: https://storage.googleapis.com/syzbot-assets/44c59c4393c7/Image-a77d28d1.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+47366a6b503c7edf6bbb@...kaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3130 at mm/slab_common.c:923 free_large_kmalloc+0x3c/0x144 mm/slab_common.c:924 Modules linked in: CPU: 0 PID: 3130 Comm: syz-executor.5 Not tainted 6.1.0-rc6-syzkaller-32651-ga77d28d13789 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : free_large_kmalloc+0x3c/0x144 mm/slab_common.c:924 lr : kfree+0xb8/0x118 mm/slab_common.c:1001 sp : ffff800012dcbba0 x29: ffff800012dcbba0 x28: ffff0000c4169a40 x27: 0000000000000000 x26: 00000000000000c0 x25: 0000000000000002 x24: ffff0000eccb8800 x23: ffff80000d5d8000 x22: ffff0000f2113018 x21: 0000000040000000 x20: ffff800008d57fd4 x19: fffffc0004768200 x18: 000000000000017a x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000406 x12: ffff80000d4f7298 x11: ff8080000805b050 x10: 0000000000000000 x9 : fffffc0000000000 x8 : ffff80000d990000 x7 : ffff8000083e0fd4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff00011da08000 x0 : fffffc0004768200 Call trace: free_large_kmalloc+0x3c/0x144 mm/slab_common.c:924 kfree+0xb8/0x118 mm/slab_common.c:1001 diUnmount+0x74/0x8c fs/jfs/jfs_imap.c:195 jfs_umount+0x94/0x190 fs/jfs/jfs_umount.c:63 jfs_put_super+0x6c/0x104 fs/jfs/super.c:194 generic_shutdown_super+0x94/0x198 fs/super.c:492 kill_block_super+0x30/0x78 fs/super.c:1428 deactivate_locked_super+0x70/0xe8 fs/super.c:332 deactivate_super+0xd0/0xd4 fs/super.c:363 cleanup_mnt+0x184/0x1c0 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x100/0x148 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 3932962 hardirqs last enabled at (3932961): [<ffff80000c0b6d44>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (3932961): [<ffff80000c0b6d44>] _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 hardirqs last disabled at (3932962): [<ffff80000c0a4074>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (3932812): [<ffff80000801c38c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (3932810): [<ffff80000801c358>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000001b0e773b page:00000000b707f24b refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15da08 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc0003bf0008 ffff0001feff4c20 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0) ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:757! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3130 Comm: syz-executor.5 Tainted: G W 6.1.0-rc6-syzkaller-32651-ga77d28d13789 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : put_page_testzero include/linux/mm.h:757 [inline] pc : __free_pages+0xc0/0x168 mm/page_alloc.c:5640 lr : put_page_testzero include/linux/mm.h:757 [inline] lr : __free_pages+0xc0/0x168 mm/page_alloc.c:5640 sp : ffff800012dcbb70 x29: ffff800012dcbb70 x28: ffff0000c4169a40 x27: 0000000000000000 x26: 00000000000000c0 x25: 0000000000000002 x24: ffff0000eccb8800 x23: ffff80000d5d8000 x22: 0000000000000000 x21: fffffffffffff000 x20: 0000000000000000 x19: fffffc0004768200 x18: 00000000000001ba x17: 3030303030303030 x16: ffff80000dc18158 x15: ffff0000c4169a40 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c4169a40 x11: ff808000081c4d40 x10: 0000000000000000 x9 : 0db713de61b9aa00 x8 : 0db713de61b9aa00 x7 : ffff80000c0b1cb4 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 000000000000003e Call trace: put_page_testzero include/linux/mm.h:757 [inline] __free_pages+0xc0/0x168 mm/page_alloc.c:5640 free_large_kmalloc+0xac/0x144 mm/slab_common.c:932 kfree+0xb8/0x118 mm/slab_common.c:1001 diUnmount+0x74/0x8c fs/jfs/jfs_imap.c:195 jfs_umount+0x94/0x190 fs/jfs/jfs_umount.c:63 jfs_put_super+0x6c/0x104 fs/jfs/super.c:194 generic_shutdown_super+0x94/0x198 fs/super.c:492 kill_block_super+0x30/0x78 fs/super.c:1428 deactivate_locked_super+0x70/0xe8 fs/super.c:332 deactivate_super+0xd0/0xd4 fs/super.c:363 cleanup_mnt+0x184/0x1c0 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x100/0x148 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: d0023861 91245021 aa1303e0 97fe88b8 (d4210000) ---[ end trace 0000000000000000 ]--- --- 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@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
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