ERROR: (device loop1): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 6 ERROR: (device loop1): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 7 ================================================================== BUG: KASAN: user-memory-access in instrument_atomic_read_write include/linux/instrumented.h:102 [inline] BUG: KASAN: user-memory-access in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:176 [inline] BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:272 [inline] BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:315 [inline] BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:333 [inline] BUG: KASAN: user-memory-access in posix_acl_release include/linux/posix_acl.h:57 [inline] BUG: KASAN: user-memory-access in __destroy_inode+0x4a4/0x84c fs/inode.c:298 Write of size 4 at addr 0000000b00000000 by task syz-executor/4228 CPU: 1 PID: 4228 Comm: syz-executor Not tainted 6.1.100-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_report+0xe4/0x4c0 mm/kasan/report.c:398 kasan_report+0xd4/0x130 mm/kasan/report.c:495 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189 __kasan_check_write+0x2c/0x3c mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:102 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:176 [inline] __refcount_sub_and_test include/linux/refcount.h:272 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x4a4/0x84c fs/inode.c:298 destroy_inode fs/inode.c:309 [inline] evict+0x564/0x68c fs/inode.c:681 dispose_list fs/inode.c:699 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:749 generic_shutdown_super+0x9c/0x328 fs/super.c:480 kill_block_super+0x70/0xdc fs/super.c:1459 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 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/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ================================================================== Unable to handle kernel paging request at virtual address 0000000b00000000 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 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000129199000 [0000000b00000000] pgd=08000001089eb003, p4d=08000001089eb003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4228 Comm: syz-executor Tainted: G B 6.1.100-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lse_atomic_fetch_add_release arch/arm64/include/asm/atomic_lse.h:62 [inline] pc : __lse_atomic_fetch_sub_release arch/arm64/include/asm/atomic_lse.h:76 [inline] pc : arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] pc : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] pc : __refcount_sub_and_test include/linux/refcount.h:272 [inline] pc : __refcount_dec_and_test include/linux/refcount.h:315 [inline] pc : refcount_dec_and_test include/linux/refcount.h:333 [inline] pc : posix_acl_release include/linux/posix_acl.h:57 [inline] pc : __destroy_inode+0x4b0/0x84c fs/inode.c:298 lr : arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] lr : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] lr : __refcount_sub_and_test include/linux/refcount.h:272 [inline] lr : __refcount_dec_and_test include/linux/refcount.h:315 [inline] lr : refcount_dec_and_test include/linux/refcount.h:333 [inline] lr : posix_acl_release include/linux/posix_acl.h:57 [inline] lr : __destroy_inode+0x4ac/0x84c fs/inode.c:298 sp : ffff80001dd97710 x29: ffff80001dd97710 x28: 1fffe0001ddb4680 x27: dfff800000000000 x26: 1fffe0001ddb4685 x25: 1fffe0001ddb4683 x24: dfff800000000000 x23: ffff0000eeda32f8 x22: ffff0000ce2f6060 x21: 0000000000000001 x20: 0000000000000000 x19: 0000000b00000000 x18: 1fffe0003686f176 x17: ffff80001585d000 x16: ffff800012170064 x15: ffff0001b4378bbc x14: ffff0001b4378bb8 x13: 1fffe0003686f176 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008aad718 x8 : 00000000ffffffff x7 : 1fffe0003686f177 x6 : ffff80000827cf28 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000081ae3ac x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] __refcount_sub_and_test include/linux/refcount.h:272 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x4b0/0x84c fs/inode.c:298 destroy_inode fs/inode.c:309 [inline] evict+0x564/0x68c fs/inode.c:681 dispose_list fs/inode.c:699 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:749 generic_shutdown_super+0x9c/0x328 fs/super.c:480 kill_block_super+0x70/0xdc fs/super.c:1459 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 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/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 97fb2bdb d503201f 97e92f76 12800008 (b8680274) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97fb2bdb bl 0xffffffffffecaf6c 4: d503201f nop 8: 97e92f76 bl 0xffffffffffa4bde0 c: 12800008 mov w8, #0xffffffff // #-1 * 10: b8680274 ldaddl w8, w20, [x19] <-- trapping instruction