------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 6752 at kernel/locking/lockdep.c:237 hlock_class kernel/locking/lockdep.c:-1 [inline] WARNING: CPU: 0 PID: 6752 at kernel/locking/lockdep.c:237 check_wait_context kernel/locking/lockdep.c:4855 [inline] WARNING: CPU: 0 PID: 6752 at kernel/locking/lockdep.c:237 __lock_acquire+0x338/0x3058 kernel/locking/lockdep.c:5185 Modules linked in: CPU: 0 UID: 0 PID: 6752 Comm: syz.3.29 Not tainted 6.15.0-rc4-syzkaller-g66d2d510fea3 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : hlock_class kernel/locking/lockdep.c:-1 [inline] pc : check_wait_context kernel/locking/lockdep.c:4855 [inline] pc : __lock_acquire+0x338/0x3058 kernel/locking/lockdep.c:5185 lr : hlock_class kernel/locking/lockdep.c:237 [inline] lr : check_wait_context kernel/locking/lockdep.c:4855 [inline] lr : __lock_acquire+0x32c/0x3058 kernel/locking/lockdep.c:5185 sp : ffff8000a2537180 x29: ffff8000a2537260 x28: 0000000000000004 x27: ffff0000d1c7a9b0 x26: ffff800080b8c010 x25: 0000000000000000 x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000d1c79e80 x20: ffff800096f4a000 x19: 0000000000000000 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008ada32f4 x15: 0000000000000001 x14: 1fffe0003670d322 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800092d11bc0 x10: 0000000000000739 x9 : 0362a049ed07d700 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a2536ad8 x4 : ffff80008f3f4f00 x3 : ffff8000807ac100 x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000 Call trace: hlock_class kernel/locking/lockdep.c:-1 [inline] (P) check_wait_context kernel/locking/lockdep.c:4855 [inline] (P) __lock_acquire+0x338/0x3058 kernel/locking/lockdep.c:5185 (P) lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:38 ___slab_alloc+0xc3c/0xeb4 mm/slub.c:3921 __slab_alloc+0x74/0xd0 mm/slub.c:3962 __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] kmem_cache_alloc_noprof+0x2e0/0x3e8 mm/slub.c:4217 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2927 [inline] xattr_alloc fs/f2fs/xattr.c:30 [inline] lookup_all_xattrs fs/f2fs/xattr.c:333 [inline] f2fs_getxattr+0x36c/0xc14 fs/f2fs/xattr.c:533 f2fs_xattr_generic_get+0x130/0x174 fs/f2fs/xattr.c:63 __vfs_getxattr+0x394/0x3c0 fs/xattr.c:423 cap_inode_need_killpriv+0x50/0x78 security/commoncap.c:331 security_inode_need_killpriv+0x90/0x298 security/security.c:2638 dentry_needs_remove_privs fs/inode.c:2172 [inline] file_remove_privs_flags+0x1d4/0x4ac fs/inode.c:2203 file_modified_flags+0x5c/0x450 fs/inode.c:2363 file_modified+0x24/0x34 fs/inode.c:2392 f2fs_write_checks fs/f2fs/file.c:4846 [inline] f2fs_file_write_iter+0x310/0x1ba4 fs/f2fs/file.c:5138 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x62c/0x97c fs/read_write.c:684 ksys_write+0x120/0x210 fs/read_write.c:736 __do_sys_write fs/read_write.c:747 [inline] __se_sys_write fs/read_write.c:744 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:744 __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+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 60 hardirqs last enabled at (59): [] seqcount_lockdep_reader_access+0x68/0xc8 include/linux/seqlock.h:74 hardirqs last disabled at (60): [] ___slab_alloc+0xc18/0xeb4 mm/slub.c:3921 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel NULL pointer dereference at virtual address 00000000000000c4 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006, 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=00000001091cc000 [00000000000000c4] pgd=08000001092c3403, p4d=08000001092c3403, pud=080000012ebfa403, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6752 Comm: syz.3.29 Tainted: G W 6.15.0-rc4-syzkaller-g66d2d510fea3 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4855 [inline] pc : __lock_acquire+0x34c/0x3058 kernel/locking/lockdep.c:5185 lr : hlock_class kernel/locking/lockdep.c:237 [inline] lr : check_wait_context kernel/locking/lockdep.c:4855 [inline] lr : __lock_acquire+0x32c/0x3058 kernel/locking/lockdep.c:5185 sp : ffff8000a2537180 x29: ffff8000a2537260 x28: 0000000000000004 x27: ffff0000d1c7a9b0 x26: ffff800080b8c010 x25: 0000000000000000 x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000d1c79e80 x20: ffff800096f4a000 x19: 0000000000000000 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008ada32f4 x15: 0000000000000001 x14: 1fffe0003670d322 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800092d11bc0 x10: 0000000000000739 x9 : 00000000000c1c81 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a2536ad8 x4 : ffff80008f3f4f00 x3 : ffff8000807ac100 x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000 Call trace: hlock_class kernel/locking/lockdep.c:228 [inline] (P) check_wait_context kernel/locking/lockdep.c:4856 [inline] (P) __lock_acquire+0x34c/0x3058 kernel/locking/lockdep.c:5185 (P) lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:38 ___slab_alloc+0xc3c/0xeb4 mm/slub.c:3921 __slab_alloc+0x74/0xd0 mm/slub.c:3962 __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] kmem_cache_alloc_noprof+0x2e0/0x3e8 mm/slub.c:4217 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2927 [inline] xattr_alloc fs/f2fs/xattr.c:30 [inline] lookup_all_xattrs fs/f2fs/xattr.c:333 [inline] f2fs_getxattr+0x36c/0xc14 fs/f2fs/xattr.c:533 f2fs_xattr_generic_get+0x130/0x174 fs/f2fs/xattr.c:63 __vfs_getxattr+0x394/0x3c0 fs/xattr.c:423 cap_inode_need_killpriv+0x50/0x78 security/commoncap.c:331 security_inode_need_killpriv+0x90/0x298 security/security.c:2638 dentry_needs_remove_privs fs/inode.c:2172 [inline] file_remove_privs_flags+0x1d4/0x4ac fs/inode.c:2203 file_modified_flags+0x5c/0x450 fs/inode.c:2363 file_modified+0x24/0x34 fs/inode.c:2392 f2fs_write_checks fs/f2fs/file.c:4846 [inline] f2fs_file_write_iter+0x310/0x1ba4 fs/f2fs/file.c:5138 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x62c/0x97c fs/read_write.c:684 ksys_write+0x120/0x210 fs/read_write.c:736 __do_sys_write fs/read_write.c:747 [inline] __se_sys_write fs/read_write.c:744 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:744 __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+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: 14000003 90093feb 912f016b b9402369 (39431113) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 14000003 b 0xc 4: 90093feb adrp x11, 0x127fc000 8: 912f016b add x11, x11, #0xbc0 c: b9402369 ldr w9, [x27, #32] * 10: 39431113 ldrb w19, [x8, #196] <-- trapping instruction