------------[ cut here ]------------ WARNING: CPU: 1 PID: 4855 at kernel/time/hrtimer.c:945 hrtimer_forward+0x1e3/0x270 kernel/time/hrtimer.c:945 Modules linked in: CPU: 1 PID: 4855 Comm: syz-executor.0 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hrtimer_forward+0x1e3/0x270 kernel/time/hrtimer.c:945 Code: e5 4d 0f 4e ec e8 bd 72 10 00 4c 89 6b 20 e8 b4 72 10 00 4c 89 f0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 9d 72 10 00 <0f> 0b 45 31 f6 eb dd e8 91 72 10 00 4c 89 e0 48 8b 3c 24 48 99 48 RSP: 0018:ffffc90000dc0dc8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888018246fe0 RCX: 0000000000000100 RDX: ffff888069b90000 RSI: ffffffff81653843 RDI: 0000000000000003 RBP: 00000000061a8000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff816536f8 R11: 0000000000000000 R12: 0000000000000000 R13: 000000d6f460552b R14: 0000000000000001 R15: ffffffff8532ffb0 FS: 00007f2dae3d3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000542978 CR3: 000000001eb72000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_beacon+0x159/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1870 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__sanitizer_cov_trace_pc+0x43/0x60 kernel/kcov.c:203 Code: f0 01 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 34 15 00 00 85 c0 74 2b 8b 82 10 15 00 00 83 f8 02 75 20 48 8b 8a 18 15 00 00 <8b> 92 14 15 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 RSP: 0018:ffffc9000192f048 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffc9000192f388 RCX: ffffc900022b9000 RDX: ffff888069b90000 RSI: ffffffff821437c7 RDI: ffffc9000192f388 RBP: dffffc0000000000 R08: 000000000000000c R09: 0000000000000001 R10: ffffffff821445e1 R11: 0000000000000002 R12: ffff8880772824e0 R13: ffff888077282546 R14: ffff888077282510 R15: ffff88807728251c mb_mark_used+0x77/0xdc0 fs/ext4/mballoc.c:1928 ext4_mb_use_best_found+0x207/0x8e0 fs/ext4/mballoc.c:2015 ext4_mb_find_by_goal+0x60c/0xd60 fs/ext4/mballoc.c:2237 ext4_mb_regular_allocator+0x237/0x3870 fs/ext4/mballoc.c:2636 ext4_mb_new_blocks+0x24d4/0x5230 fs/ext4/mballoc.c:5515 ext4_ext_map_blocks+0x1fa3/0x6070 fs/ext4/extents.c:4245 ext4_map_blocks+0x653/0x17d0 fs/ext4/inode.c:638 ext4_alloc_file_blocks.isra.0+0x2c1/0xae0 fs/ext4/extents.c:4432 ext4_fallocate+0x45e/0x3ff0 fs/ext4/extents.c:4712 vfs_fallocate+0x48d/0xd80 fs/open.c:311 ioctl_preallocate+0x18e/0x200 fs/ioctl.c:497 file_ioctl fs/ioctl.c:537 [inline] do_vfs_ioctl+0x1144/0x15d0 fs/ioctl.c:1048 __do_sys_ioctl fs/ioctl.c:1067 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x108/0x200 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2dae3d3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000020000040 RSI: 000000004030582a RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe5796084f R14: 00007f2dae3d3300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: f0 01 00 lock add %eax,(%rax) 3: a9 00 01 ff 00 test $0xff0100,%eax 8: 74 0e je 0x18 a: 85 c9 test %ecx,%ecx c: 74 35 je 0x43 e: 8b 82 34 15 00 00 mov 0x1534(%rdx),%eax 14: 85 c0 test %eax,%eax 16: 74 2b je 0x43 18: 8b 82 10 15 00 00 mov 0x1510(%rdx),%eax 1e: 83 f8 02 cmp $0x2,%eax 21: 75 20 jne 0x43 23: 48 8b 8a 18 15 00 00 mov 0x1518(%rdx),%rcx * 2a: 8b 92 14 15 00 00 mov 0x1514(%rdx),%edx <-- trapping instruction 30: 48 8b 01 mov (%rcx),%rax 33: 48 83 c0 01 add $0x1,%rax 37: 48 39 c2 cmp %rax,%rdx 3a: 76 07 jbe 0x43 3c: 48 89 34 c1 mov %rsi,(%rcx,%rax,8)