Hello, syzbot found the following issue on: HEAD commit: 44c026a73be8 Linux 6.4-rc3 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=10741fe9280000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d8067683055e3f5 dashboard link: https://syzkaller.appspot.com/bug?extid=b8d61a58b7c7ebd2c8e0 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1223f7d9280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1245326a280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/51c970de1750/disk-44c026a7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/799aacdbebeb/vmlinux-44c026a7.xz kernel image: https://storage.googleapis.com/syzbot-assets/0afc45e7f608/bzImage-44c026a7.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/fd3a214bd6ba/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b8d61a58b7c7ebd2c8e0@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 8192 REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal REISERFS (device loop0): using ordered data mode reiserfs: using flush barriers ================================================================== BUG: KASAN: user-memory-access in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: user-memory-access in test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:57 [inline] BUG: KASAN: user-memory-access in bit_spin_lock include/linux/bit_spinlock.h:27 [inline] BUG: KASAN: user-memory-access in zram_slot_lock+0x57/0x150 drivers/block/zram/zram_drv.c:67 Write of size 8 at addr 0000000000004128 by task syz-executor326/4993 CPU: 1 PID: 4993 Comm: syz-executor326 Not tainted 6.4.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_report+0xe6/0x540 mm/kasan/report.c:465 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:57 [inline] bit_spin_lock include/linux/bit_spinlock.h:27 [inline] zram_slot_lock+0x57/0x150 drivers/block/zram/zram_drv.c:67 zram_read_page drivers/block/zram/zram_drv.c:1362 [inline] zram_bvec_read drivers/block/zram/zram_drv.c:1409 [inline] zram_bio_read drivers/block/zram/zram_drv.c:1883 [inline] zram_submit_bio+0x18bc/0x26d0 drivers/block/zram/zram_drv.c:1933 __submit_bio+0x205/0x2e0 block/blk-core.c:598 __submit_bio_noacct block/blk-core.c:641 [inline] submit_bio_noacct_nocheck+0x467/0xc60 block/blk-core.c:704 submit_bh fs/buffer.c:2782 [inline] __bread_slow fs/buffer.c:1226 [inline] __bread_gfp+0x1ec/0x380 fs/buffer.c:1419 __bread include/linux/buffer_head.h:471 [inline] journal_init+0xf61/0x24b0 fs/reiserfs/journal.c:2788 reiserfs_fill_super+0x1039/0x2620 fs/reiserfs/super.c:2022 mount_bdev+0x274/0x3a0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f185eef5b0a Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe122853a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f185eef5b0a RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00007ffe122853b0 RBP: 00007ffe122853b0 R08: 00007ffe122853f0 R09: 0000000000001121 R10: 000000000120c083 R11: 0000000000000286 R12: 0000000000000004 R13: 00005555570882c0 R14: 00007ffe122853f0 R15: 0000000000000000 </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. If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
