ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 6 ERROR: (device loop0): 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:96 [inline] BUG: KASAN: user-memory-access in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:264 [inline] BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:307 [inline] BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:325 [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:300 Write of size 4 at addr 0000000b00000000 by task syz-executor209/6413 CPU: 1 UID: 0 PID: 6413 Comm: syz-executor209 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326 __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:119 print_report+0xf8/0x538 mm/kasan/report.c:491 kasan_report+0xd8/0x138 mm/kasan/report.c:601 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189 __kasan_check_write+0x20/0x30 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] __refcount_sub_and_test include/linux/refcount.h:264 [inline] __refcount_dec_and_test include/linux/refcount.h:307 [inline] refcount_dec_and_test include/linux/refcount.h:325 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x4a4/0x84c fs/inode.c:300 destroy_inode fs/inode.c:311 [inline] evict+0x714/0x894 fs/inode.c:729 dispose_list fs/inode.c:747 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:797 generic_shutdown_super+0x9c/0x2b8 fs/super.c:627 kill_block_super+0x44/0x90 fs/super.c:1696 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ================================================================== Unable to handle kernel paging request at virtual address 0000000b00000000 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000001063f9000 [0000000b00000000] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 1 UID: 0 PID: 6413 Comm: syz-executor209 Tainted: G B 6.11.0-rc7-syzkaller-g5f5673607153 #0 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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 : raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline] pc : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline] pc : __refcount_sub_and_test include/linux/refcount.h:264 [inline] pc : __refcount_dec_and_test include/linux/refcount.h:307 [inline] pc : refcount_dec_and_test include/linux/refcount.h:325 [inline] pc : posix_acl_release include/linux/posix_acl.h:57 [inline] pc : __destroy_inode+0x4b0/0x84c fs/inode.c:300 lr : arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] lr : raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline] lr : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline] lr : __refcount_sub_and_test include/linux/refcount.h:264 [inline] lr : __refcount_dec_and_test include/linux/refcount.h:307 [inline] lr : refcount_dec_and_test include/linux/refcount.h:325 [inline] lr : posix_acl_release include/linux/posix_acl.h:57 [inline] lr : __destroy_inode+0x4ac/0x84c fs/inode.c:300 sp : ffff80009b6f7910 x29: ffff80009b6f7910 x28: dfff800000000000 x27: 1fffe0001bd621de x26: 0000000000000000 x25: 1fffe0001bd621e1 x24: dfff800000000000 x23: ffff0000deb10de8 x22: ffff0000c9e88068 x21: 0000000000000001 x20: 0000000000000000 x19: 0000000b00000000 x18: 0000000000000008 x17: 0000000000000000 x16: ffff800083032784 x15: 0000000000000001 x14: 1ffff00012543a94 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012543a95 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 00000000ffffffff x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009b6f6f58 x4 : ffff80008f65b620 x3 : ffff8000801dfd40 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline] __refcount_sub_and_test include/linux/refcount.h:264 [inline] __refcount_dec_and_test include/linux/refcount.h:307 [inline] refcount_dec_and_test include/linux/refcount.h:325 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x4b0/0x84c fs/inode.c:300 destroy_inode fs/inode.c:311 [inline] evict+0x714/0x894 fs/inode.c:729 dispose_list fs/inode.c:747 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:797 generic_shutdown_super+0x9c/0x2b8 fs/super.c:627 kill_block_super+0x44/0x90 fs/super.c:1696 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 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: 97fa82aa d503201f 97e60cf0 12800008 (b8680274) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97fa82aa bl 0xffffffffffea0aa8 4: d503201f nop 8: 97e60cf0 bl 0xffffffffff9833c8 c: 12800008 mov w8, #0xffffffff // #-1 * 10: b8680274 ldaddl w8, w20, [x19] <-- trapping instruction