RDX: 00002000000001c0 RSI: 0000000040146f2c RDI: 0000000000000004 RBP: 00007f24ad246090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f24ac626128 R14: 00007f24ac626090 R15: 00007ffd60a91e08 ERROR: Out of memory at tomoyo_realpath_from_path. ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#1: syz.7.5665/27625 WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x132a/0x15a0 kernel/locking/mutex.c:821, CPU#1: syz.7.5665/27625 Modules linked in: CPU: 1 UID: 0 PID: 27625 Comm: syz.7.5665 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x1331/0x15a0 kernel/locking/mutex.c:821 Code: 9f 7a 91 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 46 02 00 00 83 3d 93 92 84 05 00 75 13 48 8d 3d a6 90 87 05 48 c7 c6 00 27 0d 8c <67> 48 0f b9 3a 90 e9 1d ee ff ff 90 0f 0b 90 e9 f0 f1 ff ff 90 0f RSP: 0018:ffffc90005107a60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88807ea03e80 RDX: 0000000000000000 RSI: ffffffff8c0d2700 RDI: ffffffff917d9e00 RBP: ffffc90005107c00 R08: ffffffff917a9fe3 R09: 1ffffffff22f53fc R10: dffffc0000000000 R11: fffffbfff22f53fd R12: ffff88801c1e0b30 R13: 0000000000000000 R14: 1ffff92000a20f60 R15: 0000000000000000 FS: 00007f24ad2466c0(0000) GS:ffff888123b8f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f24ac270220 CR3: 0000000045994000 CR4: 00000000003526f0 Call Trace: as102_dvb_dmx_start_feed+0x70/0x290 drivers/media/usb/as102/as102_drv.c:139 dmx_ts_feed_start_filtering+0x129/0x220 drivers/media/dvb-core/dvb_demux.c:747 dvb_dmxdev_start_feed drivers/media/dvb-core/dmxdev.c:658 [inline] dvb_dmxdev_filter_start+0x434/0x10d0 drivers/media/dvb-core/dmxdev.c:769 dvb_demux_do_ioctl+0x48b/0x540 drivers/media/dvb-core/dmxdev.c:1099 dvb_usercopy+0x199/0x2e0 drivers/media/dvb-core/dvbdev.c:996 dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1208 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f24ac39e559 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f24ad246028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f24ac626090 RCX: 00007f24ac39e559 RDX: 00002000000001c0 RSI: 0000000040146f2c RDI: 0000000000000004 RBP: 00007f24ad246090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f24ac626128 R14: 00007f24ac626090 R15: 00007ffd60a91e08 ---------------- Code disassembly (best guess): 0: 9f lahf 1: 7a 91 jp 0xffffff94 3: 48 c1 e8 03 shr $0x3,%rax 7: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax b: 84 c0 test %al,%al d: 0f 85 46 02 00 00 jne 0x259 13: 83 3d 93 92 84 05 00 cmpl $0x0,0x5849293(%rip) # 0x58492ad 1a: 75 13 jne 0x2f 1c: 48 8d 3d a6 90 87 05 lea 0x58790a6(%rip),%rdi # 0x58790c9 23: 48 c7 c6 00 27 0d 8c mov $0xffffffff8c0d2700,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 90 nop 30: e9 1d ee ff ff jmp 0xffffee52 35: 90 nop 36: 0f 0b ud2 38: 90 nop 39: e9 f0 f1 ff ff jmp 0xfffff22e 3e: 90 nop 3f: 0f .byte 0xf