Hello, syzbot found the following issue on: HEAD commit: dcc0b490 Merge tag 'powerpc-5.11-8' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1316c614d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a2fbb1a71525e1d5 dashboard link: https://syzkaller.appspot.com/bug?extid=921ef0ccfeed3a496721 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1378ba4cd00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e73fc2d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+921ef0ccfeed3a496721@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff88810ffa0780 (size 192): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.810s) hex dump (first 32 bytes): 44 80 00 00 06 00 00 00 00 00 00 00 00 00 00 00 D............... 00 00 00 00 00 00 00 00 c0 63 f1 0f 81 88 ff ff .........c...... backtrace: [<000000000f4d69f8>] __d_alloc+0x2a/0x270 fs/dcache.c:1716 [<00000000a20f7fde>] d_alloc+0x25/0xd0 fs/dcache.c:1795 [<000000007cbd02b4>] d_alloc_parallel+0x6b/0x940 fs/dcache.c:2547 [<00000000fda6bfea>] lookup_open fs/namei.c:3033 [inline] [<00000000fda6bfea>] open_last_lookups fs/namei.c:3180 [inline] [<00000000fda6bfea>] path_openat+0xca3/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ffea360 (size 608): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.810s) hex dump (first 32 bytes): a4 81 0c 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ backtrace: [<00000000cbb42cce>] alloc_inode+0xbe/0x100 fs/inode.c:235 [<00000000dc171831>] iget_locked+0x126/0x340 fs/inode.c:1192 [<0000000025e74921>] kernfs_get_inode+0x20/0x190 fs/kernfs/inode.c:252 [<000000008b802090>] kernfs_iop_lookup+0xa0/0xe0 fs/kernfs/dir.c:1100 [<00000000e4bc5624>] lookup_open fs/namei.c:3085 [inline] [<00000000e4bc5624>] open_last_lookups fs/namei.c:3180 [inline] [<00000000e4bc5624>] path_openat+0x95d/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ec1b2b8 (size 24): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.810s) hex dump (first 24 bytes): 98 a4 fe 0f 81 88 ff ff 30 e1 09 82 ff ff ff ff ........0....... 00 00 00 00 00 00 00 00 ........ backtrace: [<00000000d6a1f02a>] kmem_cache_zalloc include/linux/slab.h:672 [inline] [<00000000d6a1f02a>] lsm_inode_alloc security/security.c:590 [inline] [<00000000d6a1f02a>] security_inode_alloc+0x2a/0xb0 security/security.c:973 [<000000009366b0d8>] inode_init_always+0x10c/0x250 fs/inode.c:170 [<00000000357b1464>] alloc_inode+0x44/0x100 fs/inode.c:240 [<00000000dc171831>] iget_locked+0x126/0x340 fs/inode.c:1192 [<0000000025e74921>] kernfs_get_inode+0x20/0x190 fs/kernfs/inode.c:252 [<000000008b802090>] kernfs_iop_lookup+0xa0/0xe0 fs/kernfs/dir.c:1100 [<00000000e4bc5624>] lookup_open fs/namei.c:3085 [inline] [<00000000e4bc5624>] open_last_lookups fs/namei.c:3180 [inline] [<00000000e4bc5624>] path_openat+0x95d/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ffc3f00 (size 192): comm "kdevtmpfs", pid 21, jiffies 4294974223 (age 70.600s) hex dump (first 32 bytes): 08 80 00 00 06 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 90 56 00 81 88 ff ff ..........V..... backtrace: [<000000000f4d69f8>] __d_alloc+0x2a/0x270 fs/dcache.c:1716 [<00000000a20f7fde>] d_alloc+0x25/0xd0 fs/dcache.c:1795 [<00000000e1f38abc>] __lookup_hash+0x77/0xd0 fs/namei.c:1441 [<000000002b4d8a6a>] filename_create+0xc3/0x240 fs/namei.c:3470 [<0000000049e829fd>] handle_create+0x49/0x28a drivers/base/devtmpfs.c:207 [<0000000033a814c1>] handle drivers/base/devtmpfs.c:377 [inline] [<0000000033a814c1>] devtmpfs_work_loop drivers/base/devtmpfs.c:392 [inline] [<0000000033a814c1>] devtmpfsd+0x14e/0x1d3 drivers/base/devtmpfs.c:434 [<00000000f978b357>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<000000000ea26e78>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 BUG: memory leak unreferenced object 0xffff888114e342d0 (size 720): comm "kdevtmpfs", pid 21, jiffies 4294974223 (age 70.600s) hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 20 00 00 00 00 00 .......... ..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000d4c4e200>] shmem_alloc_inode+0x18/0x40 mm/shmem.c:3826 [<00000000bbfd1b25>] alloc_inode+0x27/0x100 fs/inode.c:233 [<00000000639a7c47>] new_inode_pseudo fs/inode.c:927 [inline] [<00000000639a7c47>] new_inode+0x23/0x100 fs/inode.c:956 [<000000004e164ffa>] shmem_get_inode+0xcd/0x460 mm/shmem.c:2303 [<00000000c3e9d654>] shmem_mknod+0x37/0x130 mm/shmem.c:2925 [<0000000094c3aa16>] vfs_mknod+0x339/0x430 fs/namei.c:3554 [<00000000a44105b5>] handle_create+0x1db/0x28a drivers/base/devtmpfs.c:215 [<0000000033a814c1>] handle drivers/base/devtmpfs.c:377 [inline] [<0000000033a814c1>] devtmpfs_work_loop drivers/base/devtmpfs.c:392 [inline] [<0000000033a814c1>] devtmpfsd+0x14e/0x1d3 drivers/base/devtmpfs.c:434 [<00000000f978b357>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<000000000ea26e78>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 BUG: memory leak unreferenced object 0xffff88810ffa0780 (size 192): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.960s) hex dump (first 32 bytes): 44 80 00 00 06 00 00 00 00 00 00 00 00 00 00 00 D............... 00 00 00 00 00 00 00 00 c0 63 f1 0f 81 88 ff ff .........c...... backtrace: [<000000000f4d69f8>] __d_alloc+0x2a/0x270 fs/dcache.c:1716 [<00000000a20f7fde>] d_alloc+0x25/0xd0 fs/dcache.c:1795 [<000000007cbd02b4>] d_alloc_parallel+0x6b/0x940 fs/dcache.c:2547 [<00000000fda6bfea>] lookup_open fs/namei.c:3033 [inline] [<00000000fda6bfea>] open_last_lookups fs/namei.c:3180 [inline] [<00000000fda6bfea>] path_openat+0xca3/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ffea360 (size 608): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.960s) hex dump (first 32 bytes): a4 81 0c 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ backtrace: [<00000000cbb42cce>] alloc_inode+0xbe/0x100 fs/inode.c:235 [<00000000dc171831>] iget_locked+0x126/0x340 fs/inode.c:1192 [<0000000025e74921>] kernfs_get_inode+0x20/0x190 fs/kernfs/inode.c:252 [<000000008b802090>] kernfs_iop_lookup+0xa0/0xe0 fs/kernfs/dir.c:1100 [<00000000e4bc5624>] lookup_open fs/namei.c:3085 [inline] [<00000000e4bc5624>] open_last_lookups fs/namei.c:3180 [inline] [<00000000e4bc5624>] path_openat+0x95d/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ec1b2b8 (size 24): comm "systemd-udevd", pid 9109, jiffies 4294974202 (age 70.960s) hex dump (first 24 bytes): 98 a4 fe 0f 81 88 ff ff 30 e1 09 82 ff ff ff ff ........0....... 00 00 00 00 00 00 00 00 ........ backtrace: [<00000000d6a1f02a>] kmem_cache_zalloc include/linux/slab.h:672 [inline] [<00000000d6a1f02a>] lsm_inode_alloc security/security.c:590 [inline] [<00000000d6a1f02a>] security_inode_alloc+0x2a/0xb0 security/security.c:973 [<000000009366b0d8>] inode_init_always+0x10c/0x250 fs/inode.c:170 [<00000000357b1464>] alloc_inode+0x44/0x100 fs/inode.c:240 [<00000000dc171831>] iget_locked+0x126/0x340 fs/inode.c:1192 [<0000000025e74921>] kernfs_get_inode+0x20/0x190 fs/kernfs/inode.c:252 [<000000008b802090>] kernfs_iop_lookup+0xa0/0xe0 fs/kernfs/dir.c:1100 [<00000000e4bc5624>] lookup_open fs/namei.c:3085 [inline] [<00000000e4bc5624>] open_last_lookups fs/namei.c:3180 [inline] [<00000000e4bc5624>] path_openat+0x95d/0x1b00 fs/namei.c:3368 [<00000000e92e3050>] do_filp_open+0xa0/0x190 fs/namei.c:3398 [<00000000ca660767>] do_sys_openat2+0xed/0x230 fs/open.c:1172 [<000000002fb778b6>] do_sys_open fs/open.c:1188 [inline] [<000000002fb778b6>] __do_sys_open fs/open.c:1196 [inline] [<000000002fb778b6>] __se_sys_open fs/open.c:1192 [inline] [<000000002fb778b6>] __x64_sys_open+0x7d/0xe0 fs/open.c:1192 [<0000000011942ea6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<0000000076bff2b1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810ffc3f00 (size 192): comm "kdevtmpfs", pid 21, jiffies 4294974223 (age 70.750s) hex dump (first 32 bytes): 08 80 00 00 06 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 90 56 00 81 88 ff ff ..........V..... backtrace: [<000000000f4d69f8>] __d_alloc+0x2a/0x270 fs/dcache.c:1716 [<00000000a20f7fde>] d_alloc+0x25/0xd0 fs/dcache.c:1795 [<00000000e1f38abc>] __lookup_hash+0x77/0xd0 fs/namei.c:1441 [<000000002b4d8a6a>] filename_create+0xc3/0x240 fs/namei.c:3470 [<0000000049e829fd>] handle_create+0x49/0x28a drivers/base/devtmpfs.c:207 [<0000000033a814c1>] handle drivers/base/devtmpfs.c:377 [inline] [<0000000033a814c1>] devtmpfs_work_loop drivers/base/devtmpfs.c:392 [inline] [<0000000033a814c1>] devtmpfsd+0x14e/0x1d3 drivers/base/devtmpfs.c:434 [<00000000f978b357>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<000000000ea26e78>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 BUG: memory leak unreferenced object 0xffff888114e342d0 (size 720): comm "kdevtmpfs", pid 21, jiffies 4294974223 (age 70.750s) hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 20 00 00 00 00 00 .......... ..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000d4c4e200>] shmem_alloc_inode+0x18/0x40 mm/shmem.c:3826 [<00000000bbfd1b25>] alloc_inode+0x27/0x100 fs/inode.c:233 [<00000000639a7c47>] new_inode_pseudo fs/inode.c:927 [inline] [<00000000639a7c47>] new_inode+0x23/0x100 fs/inode.c:956 [<000000004e164ffa>] shmem_get_inode+0xcd/0x460 mm/shmem.c:2303 [<00000000c3e9d654>] shmem_mknod+0x37/0x130 mm/shmem.c:2925 [<0000000094c3aa16>] vfs_mknod+0x339/0x430 fs/namei.c:3554 [<00000000a44105b5>] handle_create+0x1db/0x28a drivers/base/devtmpfs.c:215 [<0000000033a814c1>] handle drivers/base/devtmpfs.c:377 [inline] [<0000000033a814c1>] devtmpfs_work_loop drivers/base/devtmpfs.c:392 [inline] [<0000000033a814c1>] devtmpfsd+0x14e/0x1d3 drivers/base/devtmpfs.c:434 [<00000000f978b357>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<000000000ea26e78>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
