------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 7315 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4772 [inline] WARNING: CPU: 0 PID: 7315 at kernel/locking/lockdep.c:231 __lock_acquire+0x78c/0x779c kernel/locking/lockdep.c:5092 Modules linked in: CPU: 0 UID: 0 PID: 7315 Comm: syz.2.163 Not tainted 6.11.0-rc5-syzkaller-gdf54f4a16f82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4772 [inline] pc : __lock_acquire+0x78c/0x779c kernel/locking/lockdep.c:5092 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4772 [inline] lr : __lock_acquire+0x780/0x779c kernel/locking/lockdep.c:5092 sp : ffff8000a0d16fc0 x29: ffff8000a0d17280 x28: ffff0000d1a20000 x27: ffff0000d1a20ac8 x26: 1fffe0001a344159 x25: ffff800092cb4540 x24: 0000000000000001 x23: ffff0000d1a20a78 x22: ffff0000d1a20aa8 x21: ffff0000d1a20acc x20: 0000000000000bdc x19: ffff800092cb46b8 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008301a844 x15: 0000000000000001 x14: 1fffe0003679a052 x13: dfff800000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 000000000003ffff x9 : 7d12e12a3fab0b00 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a0d16718 x4 : ffff80008f5fb200 x3 : ffff8000806038d8 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4772 [inline] __lock_acquire+0x78c/0x779c kernel/locking/lockdep.c:5092 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5759 touch_wq_lockdep_map+0x98/0x118 kernel/workqueue.c:3875 __flush_workqueue+0x118/0x1174 kernel/workqueue.c:3917 drain_workqueue+0xb8/0x32c kernel/workqueue.c:4081 destroy_workqueue+0xb8/0xdc0 kernel/workqueue.c:5785 gfs2_fill_super+0xe78/0x1f98 fs/gfs2/ops_fstype.c:1310 get_tree_bdev+0x320/0x470 fs/super.c:1635 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1329 vfs_get_tree+0x90/0x28c fs/super.c:1800 do_new_mount+0x278/0x900 fs/namespace.c:3472 path_mount+0x590/0xe04 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount fs/namespace.c:3997 [inline] __arm64_sys_mount+0x45c/0x5a8 fs/namespace.c:3997 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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 irq event stamp: 99965 hardirqs last enabled at (99965): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (99965): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (99964): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (99964): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (99484): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (99484): [] handle_softirqs+0xa3c/0xbfc kernel/softirq.c:582 softirqs last disabled at (99345): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address dfff800000000018 KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] 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 [dfff800000000018] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 7315 Comm: syz.2.163 Tainted: G W 6.11.0-rc5-syzkaller-gdf54f4a16f82 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4772 [inline] pc : __lock_acquire+0x574/0x779c kernel/locking/lockdep.c:5092 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4772 [inline] lr : __lock_acquire+0x780/0x779c kernel/locking/lockdep.c:5092 sp : ffff8000a0d16fc0 x29: ffff8000a0d17280 x28: ffff0000d1a20000 x27: ffff0000d1a20ac8 x26: 1fffe0001a344159 x25: ffff800092cb4540 x24: 0000000000000001 x23: ffff0000d1a20a78 x22: ffff0000d1a20aa8 x21: 00000000000000c4 x20: 0000000000000bdc x19: ffff800092cb46b8 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008301a844 x15: 0000000000000001 x14: 1fffe0003679a052 x13: dfff800000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 000000000003ffff x9 : 7d12e12a3fab0b00 x8 : 0000000000000018 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a0d16718 x4 : ffff80008f5fb200 x3 : ffff8000806038d8 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4772 [inline] __lock_acquire+0x574/0x779c kernel/locking/lockdep.c:5092 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5759 touch_wq_lockdep_map+0x98/0x118 kernel/workqueue.c:3875 __flush_workqueue+0x118/0x1174 kernel/workqueue.c:3917 drain_workqueue+0xb8/0x32c kernel/workqueue.c:4081 destroy_workqueue+0xb8/0xdc0 kernel/workqueue.c:5785 gfs2_fill_super+0xe78/0x1f98 fs/gfs2/ops_fstype.c:1310 get_tree_bdev+0x320/0x470 fs/super.c:1635 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1329 vfs_get_tree+0x90/0x28c fs/super.c:1800 do_new_mount+0x278/0x900 fs/namespace.c:3472 path_mount+0x590/0xe04 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount fs/namespace.c:3997 [inline] __arm64_sys_mount+0x45c/0x5a8 fs/namespace.c:3997 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 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: 34000e88 aa1f03e8 91031115 d343fea8 (38ed6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 34000e88 cbz w8, 0x1d0 4: aa1f03e8 mov x8, xzr 8: 91031115 add x21, x8, #0xc4 c: d343fea8 lsr x8, x21, #3 * 10: 38ed6908 ldrsb w8, [x8, x13] <-- trapping instruction