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Date: Fri, 24 May 2024 14:06:27 -0700 From: syzbot <syzbot+4e89b5368baba8324e07@...kaller.appspotmail.com> To: jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org, shaggy@...nel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] [jfs?] BUG: unable to handle kernel paging request in txBeginAnon Hello, syzbot found the following issue on: HEAD commit: fda5695d692c 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=104354b2980000 kernel config: https://syzkaller.appspot.com/x/.config?x=95dc1de8407c7270 dashboard link: https://syzkaller.appspot.com/bug?extid=4e89b5368baba8324e07 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1748ee42980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155733e4980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/07f3214ff0d9/disk-fda5695d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/70e2e2c864e8/vmlinux-fda5695d.xz kernel image: https://storage.googleapis.com/syzbot-assets/b259942a16dc/Image-fda5695d.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/abb93d88d631/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4e89b5368baba8324e07@...kaller.appspotmail.com ... Log Wrap ... Log Wrap ... Log Wrap ... ... Log Wrap ... Log Wrap ... Log Wrap ... jfs_dirty_inode called on read-only volume Is remount racy? Unable to handle kernel paging request at virtual address dfff800000000008 KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000008] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6241 Comm: syz-executor389 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline] pc : txBeginAnon+0xac/0x154 fs/jfs/jfs_txnmgr.c:465 lr : spin_lock include/linux/spinlock.h:351 [inline] lr : txBeginAnon+0x78/0x154 fs/jfs/jfs_txnmgr.c:458 sp : ffff80009b2171c0 x29: ffff80009b2171c0 x28: ffff800093828e48 x27: ffff800093828000 x26: ffff800093828000 x25: 0000000000000008 x24: 0000000000000150 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000040 x19: ffff80008f473720 x18: ffff80009b216e80 x17: 000000000000cc10 x16: ffff80008034c6cc x15: ffff700013642e20 x14: 1ffff00013642e20 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700013642e20 x10: 1ffff00013642e20 x9 : abdcc8a6ab47b800 x8 : abdcc8a6ab47b800 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff80008034c7fc x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: txBeginAnon+0xac/0x154 extAlloc+0xe8/0xdec fs/jfs/jfs_extent.c:78 jfs_get_block+0x340/0xb98 fs/jfs/inode.c:248 __block_write_begin_int+0x580/0x166c fs/buffer.c:2105 __block_write_begin fs/buffer.c:2154 [inline] block_write_begin+0x98/0x11c fs/buffer.c:2213 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:299 generic_perform_write+0x28c/0x588 mm/filemap.c:3974 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4069 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4095 do_iter_readv_writev+0x438/0x658 vfs_writev+0x410/0xb58 fs/read_write.c:971 do_pwritev fs/read_write.c:1072 [inline] __do_sys_pwritev2 fs/read_write.c:1131 [inline] __se_sys_pwritev2 fs/read_write.c:1122 [inline] __arm64_sys_pwritev2+0x1dc/0x2f0 fs/read_write.c:1122 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: aa1803e0 97ffff65 aa1303e0 95922607 (38776b28) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa1803e0 mov x0, x24 4: 97ffff65 bl 0xfffffffffffffd98 8: aa1303e0 mov x0, x19 c: 95922607 bl 0x6489828 * 10: 38776b28 ldrb w8, [x25, x23] <-- trapping instruction --- 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. 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
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