------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 11607 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4772 [inline] WARNING: CPU: 0 PID: 11607 at kernel/locking/lockdep.c:232 __lock_acquire+0x78c/0x75e8 kernel/locking/lockdep.c:5086 Modules linked in: CPU: 0 PID: 11607 Comm: syz-executor.3 Not tainted 6.6.0-rc5-syzkaller-00006-g21fe2888ad85 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4772 [inline] pc : __lock_acquire+0x78c/0x75e8 kernel/locking/lockdep.c:5086 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4772 [inline] lr : __lock_acquire+0x780/0x75e8 kernel/locking/lockdep.c:5086 sp : ffff80009a7875a0 x29: ffff80009a787860 x28: ffff0000d0373780 x27: ffff0000d0374228 x26: 1fffe0001a06e845 x25: ffff0000d03741e0 x24: 0000000000000001 x23: 0000000000000001 x22: 0000000000001516 x21: ffff8000913e0a80 x20: 0000000000000000 x19: ffff0000d037422c x18: 1fffe000368379ce x17: 0000000000000000 x16: ffff80008a639e3c x15: 0000000000000001 x14: 1fffe00036837a32 x13: 0000000000000000 x12: dfff800000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 39cb12f2dbc71100 x8 : 0000000000000000 x7 : fffffffffffdb848 x6 : fffffffffffdb728 x5 : ffff80009a786e98 x4 : ffff80008e25b020 x3 : ffff8000805ad238 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4772 [inline] __lock_acquire+0x78c/0x75e8 kernel/locking/lockdep.c:5086 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753 down_read+0x58/0x2fc kernel/locking/rwsem.c:1520 __super_lock fs/super.c:58 [inline] __super_lock_shared fs/super.c:81 [inline] super_lock_shared_active fs/super.c:1436 [inline] fs_bdev_sync+0xa8/0x178 fs/super.c:1471 blkdev_flushbuf block/ioctl.c:372 [inline] blkdev_common_ioctl+0x848/0x2884 block/ioctl.c:502 blkdev_ioctl+0x35c/0xae4 block/ioctl.c:624 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 115 hardirqs last enabled at (115): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1384 [inline] hardirqs last enabled at (115): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5134 hardirqs last disabled at (114): [] __schedule+0x2b4/0x23b4 kernel/sched/core.c:6594 softirqs last enabled at (92): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (90): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address dfff800000000019 KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] 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 [dfff800000000019] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 11607 Comm: syz-executor.3 Tainted: G W 6.6.0-rc5-syzkaller-00006-g21fe2888ad85 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4772 [inline] pc : __lock_acquire+0x568/0x75e8 kernel/locking/lockdep.c:5086 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4772 [inline] lr : __lock_acquire+0x780/0x75e8 kernel/locking/lockdep.c:5086 sp : ffff80009a7875a0 x29: ffff80009a787860 x28: ffff0000d0373780 x27: ffff0000d0374228 x26: 1fffe0001a06e845 x25: ffff0000d03741e0 x24: 0000000000000001 x23: 0000000000000001 x22: 0000000000001516 x21: ffff8000913e0a80 x20: 0000000000000000 x19: 00000000000000c8 x18: 1fffe000368379ce x17: 0000000000000000 x16: ffff80008a639e3c x15: 0000000000000001 x14: 1fffe00036837a32 x13: 0000000000000000 x12: dfff800000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 39cb12f2dbc71100 x8 : 0000000000000019 x7 : fffffffffffdb848 x6 : fffffffffffdb728 x5 : ffff80009a786e98 x4 : ffff80008e25b020 x3 : ffff8000805ad238 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4772 [inline] __lock_acquire+0x568/0x75e8 kernel/locking/lockdep.c:5086 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753 down_read+0x58/0x2fc kernel/locking/rwsem.c:1520 __super_lock fs/super.c:58 [inline] __super_lock_shared fs/super.c:81 [inline] super_lock_shared_active fs/super.c:1436 [inline] fs_bdev_sync+0xa8/0x178 fs/super.c:1471 blkdev_flushbuf block/ioctl.c:372 [inline] blkdev_common_ioctl+0x848/0x2884 block/ioctl.c:502 blkdev_ioctl+0x35c/0xae4 block/ioctl.c:624 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: 34000ee8 aa1f03e8 91032113 d343fe68 (38ec6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 34000ee8 cbz w8, 0x1dc 4: aa1f03e8 mov x8, xzr 8: 91032113 add x19, x8, #0xc8 c: d343fe68 lsr x8, x19, #3 * 10: 38ec6908 ldrsb w8, [x8, x12] <-- trapping instruction